[X86] Don't set exception mask bits when modifying FPCW to change rounding mode for fp->int conversion

When we need to do an fp->int conversion using x87 instructions, we need to temporarily change the rounding mode to 0b11 and perform a store. To do this we save the old value of the fpcw to the stack, then set the fpcw to 0xc7f, do the store, then restore fpcw. But the 0xc7f value forces the exception mask bits 1. While this is what they would be in the default FP environment, as we move to support changing the FP environments, we shouldn't make this assumption.

This patch changes the code to explicitly OR 0xc00 with the old value so that only the rounding mode is changed. Unfortunately, this requires two stack temporaries instead of one. One to hold the old value and one to hold the new value. Without two stack temporaries we would need an additional GPR. We already need one to do the OR operation in. This is similar to what gcc and icc do for this operation. Though they are both better at reusing the stack temporaries when there are multiple truncates in a function(or at least in a basic block)

Differential Revision: https://reviews.llvm.org/D57788

llvm-svn: 354178

10 files changed, 254 insertions, 250 deletions

diff --git a/llvm/test/CodeGen/X86/bswap_tree2.ll b/llvm/test/CodeGen/X86/bswap_tree2.ll
index d716d823188..3f64d6f94d8 100644
--- a/llvm/test/CodeGen/X86/bswap_tree2.ll
+++ b/llvm/test/CodeGen/X86/bswap_tree2.ll
@@ -103,13 +103,13 @@ define i32 @test3(float %x) nounwind {
 ; CHECK:       # %bb.0:
 ; CHECK-NEXT:    subl $8, %esp
 ; CHECK-NEXT:    flds {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; CHECK-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; CHECK-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fnstcw (%esp)
+; CHECK-NEXT:    movzwl (%esp), %eax
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
 ; CHECK-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fistpl {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fldcw (%esp)
 ; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
 ; CHECK-NEXT:    movl %ecx, %edx
 ; CHECK-NEXT:    shll $8, %edx
diff --git a/llvm/test/CodeGen/X86/fp-cvt.ll b/llvm/test/CodeGen/X86/fp-cvt.ll
index b087e759c70..be09718eaac 100644
--- a/llvm/test/CodeGen/X86/fp-cvt.ll
+++ b/llvm/test/CodeGen/X86/fp-cvt.ll
@@ -10,17 +10,17 @@
 define i16 @fptosi_i16_fp80(x86_fp80 %a0) nounwind {
 ; X86-LABEL: fptosi_i16_fp80:
 ; X86:       # %bb.0:
-; X86-NEXT:    pushl %eax
+; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    fldt {{[0-9]+}}(%esp)
-; X86-NEXT:    fnstcw (%esp)
-; X86-NEXT:    movzwl (%esp), %eax
-; X86-NEXT:    movw $3199, (%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw (%esp)
-; X86-NEXT:    movw %ax, (%esp)
+; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
+; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
+; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistps {{[0-9]+}}(%esp)
-; X86-NEXT:    fldcw (%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    popl %ecx
+; X86-NEXT:    addl $8, %esp
 ; X86-NEXT:    retl
 ;
 ; X64-X87-LABEL: fptosi_i16_fp80:
@@ -28,9 +28,9 @@ define i16 @fptosi_i16_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistps -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
@@ -49,18 +49,18 @@ define i16 @fptosi_i16_fp80(x86_fp80 %a0) nounwind {
 define i16 @fptosi_i16_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-LABEL: fptosi_i16_fp80_ld:
 ; X86:       # %bb.0:
-; X86-NEXT:    pushl %eax
+; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    fldt (%eax)
-; X86-NEXT:    fnstcw (%esp)
-; X86-NEXT:    movzwl (%esp), %eax
-; X86-NEXT:    movw $3199, (%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw (%esp)
-; X86-NEXT:    movw %ax, (%esp)
+; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
+; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
+; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistps {{[0-9]+}}(%esp)
-; X86-NEXT:    fldcw (%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    popl %ecx
+; X86-NEXT:    addl $8, %esp
 ; X86-NEXT:    retl
 ;
 ; X64-X87-LABEL: fptosi_i16_fp80_ld:
@@ -68,9 +68,9 @@ define i16 @fptosi_i16_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    fldt (%rdi)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistps -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
@@ -92,13 +92,13 @@ define i32 @fptosi_i32_fp80(x86_fp80 %a0) nounwind {
 ; X86:       # %bb.0:
 ; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    fldt {{[0-9]+}}(%esp)
-; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fnstcw (%esp)
+; X86-NEXT:    movzwl (%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw (%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    addl $8, %esp
 ; X86-NEXT:    retl
@@ -108,9 +108,9 @@ define i32 @fptosi_i32_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -132,13 +132,13 @@ define i32 @fptosi_i32_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    fldt (%eax)
-; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fnstcw (%esp)
+; X86-NEXT:    movzwl (%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw (%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    addl $8, %esp
 ; X86-NEXT:    retl
@@ -148,9 +148,9 @@ define i32 @fptosi_i32_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    fldt (%rdi)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -177,9 +177,9 @@ define i64 @fptosi_i64_fp80(x86_fp80 %a0) nounwind {
 ; X86-NEXT:    fldt 8(%ebp)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -193,9 +193,9 @@ define i64 @fptosi_i64_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
@@ -222,9 +222,9 @@ define i64 @fptosi_i64_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-NEXT:    fldt (%eax)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -238,9 +238,9 @@ define i64 @fptosi_i64_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    fldt (%rdi)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
@@ -266,13 +266,13 @@ define i16 @fptoui_i16_fp80(x86_fp80 %a0) nounwind {
 ; X86:       # %bb.0:
 ; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    fldt {{[0-9]+}}(%esp)
-; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fnstcw (%esp)
+; X86-NEXT:    movzwl (%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw (%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    # kill: def $ax killed $ax killed $eax
 ; X86-NEXT:    addl $8, %esp
@@ -283,9 +283,9 @@ define i16 @fptoui_i16_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -309,13 +309,13 @@ define i16 @fptoui_i16_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-NEXT:    subl $8, %esp
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    fldt (%eax)
-; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fnstcw (%esp)
+; X86-NEXT:    movzwl (%esp), %eax
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    fistpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw (%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X86-NEXT:    # kill: def $ax killed $ax killed $eax
 ; X86-NEXT:    addl $8, %esp
@@ -326,9 +326,9 @@ define i16 @fptoui_i16_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    fldt (%rdi)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -357,9 +357,9 @@ define i32 @fptoui_i32_fp80(x86_fp80 %a0) nounwind {
 ; X86-NEXT:    fldt 8(%ebp)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -372,9 +372,9 @@ define i32 @fptoui_i32_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -401,9 +401,9 @@ define i32 @fptoui_i32_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-NEXT:    fldt (%eax)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -416,9 +416,9 @@ define i32 @fptoui_i32_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    fldt (%rdi)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X64-X87-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
@@ -459,13 +459,13 @@ define i64 @fptoui_i64_fp80(x86_fp80 %a0) nounwind {
 ; X86-NEXT:    fstp %st(0)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    xorl %edx, %edx
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X86-NEXT:    setbe %al
-; X86-NEXT:    movzbl %al, %edx
+; X86-NEXT:    setbe %dl
 ; X86-NEXT:    shll $31, %edx
 ; X86-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -479,16 +479,16 @@ define i64 @fptoui_i64_fp80(x86_fp80 %a0) nounwind {
 ; X64-X87-NEXT:    flds {{.*}}(%rip)
 ; X64-X87-NEXT:    fld %st(1)
 ; X64-X87-NEXT:    fsub %st(1), %st
-; X64-X87-NEXT:    xorl %eax, %eax
 ; X64-X87-NEXT:    fxch %st(1)
 ; X64-X87-NEXT:    fucompi %st(2), %st
 ; X64-X87-NEXT:    fcmovnbe %st(1), %st
 ; X64-X87-NEXT:    fstp %st(1)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %ecx
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    xorl %eax, %eax
+; X64-X87-NEXT:    orl $3072, %ecx # imm = 0xC00
 ; X64-X87-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    setbe %al
@@ -541,13 +541,13 @@ define i64 @fptoui_i64_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X86-NEXT:    fstp %st(0)
 ; X86-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X86-NEXT:    xorl %edx, %edx
+; X86-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X86-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X86-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X86-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X86-NEXT:    setbe %al
-; X86-NEXT:    movzbl %al, %edx
+; X86-NEXT:    setbe %dl
 ; X86-NEXT:    shll $31, %edx
 ; X86-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -561,16 +561,16 @@ define i64 @fptoui_i64_fp80_ld(x86_fp80 *%a0) nounwind {
 ; X64-X87-NEXT:    flds {{.*}}(%rip)
 ; X64-X87-NEXT:    fld %st(1)
 ; X64-X87-NEXT:    fsub %st(1), %st
-; X64-X87-NEXT:    xorl %eax, %eax
 ; X64-X87-NEXT:    fxch %st(1)
 ; X64-X87-NEXT:    fucompi %st(2), %st
 ; X64-X87-NEXT:    fcmovnbe %st(1), %st
 ; X64-X87-NEXT:    fstp %st(1)
 ; X64-X87-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    movzwl -{{[0-9]+}}(%rsp), %ecx
-; X64-X87-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    xorl %eax, %eax
+; X64-X87-NEXT:    orl $3072, %ecx # imm = 0xC00
 ; X64-X87-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
+; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; X64-X87-NEXT:    setbe %al
diff --git a/llvm/test/CodeGen/X86/inline-asm-fpstack.ll b/llvm/test/CodeGen/X86/inline-asm-fpstack.ll
index 71c89df084f..9454d46929f 100644
--- a/llvm/test/CodeGen/X86/inline-asm-fpstack.ll
+++ b/llvm/test/CodeGen/X86/inline-asm-fpstack.ll
@@ -455,13 +455,13 @@ define void @test_live_st(i32 %a1) {
 ; CHECK-NEXT:    fldcw (%eax)
 ; CHECK-NEXT:    ## InlineAsm End
 ; CHECK-NEXT:  LBB20_2: ## %_Z5tointRKe.exit
-; CHECK-NEXT:    fnstcw {{[0-9]+}}(%esp)
-; CHECK-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; CHECK-NEXT:    movw $3199, {{[0-9]+}}(%esp) ## imm = 0xC7F
-; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fnstcw (%esp)
+; CHECK-NEXT:    movzwl (%esp), %eax
+; CHECK-NEXT:    orl $3072, %eax ## imm = 0xC00
 ; CHECK-NEXT:    movw %ax, {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fistpl {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fistpl {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fldcw (%esp)
 ; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fildl {{[0-9]+}}(%esp)
diff --git a/llvm/test/CodeGen/X86/pr34080-2.ll b/llvm/test/CodeGen/X86/pr34080-2.ll
index 5cda5dadcb2..f56c01fbcbb 100644
--- a/llvm/test/CodeGen/X86/pr34080-2.ll
+++ b/llvm/test/CodeGen/X86/pr34080-2.ll
@@ -12,7 +12,7 @@ define void @computeJD(%struct.DateTime*) nounwind {
 ; CHECK-NEXT:    pushl %edi
 ; CHECK-NEXT:    pushl %esi
 ; CHECK-NEXT:    andl $-8, %esp
-; CHECK-NEXT:    subl $32, %esp
+; CHECK-NEXT:    subl $40, %esp
 ; CHECK-NEXT:    movl 8(%ebp), %ebx
 ; CHECK-NEXT:    movl 8(%ebx), %esi
 ; CHECK-NEXT:    xorl %eax, %eax
@@ -52,9 +52,9 @@ define void @computeJD(%struct.DateTime*) nounwind {
 ; CHECK-NEXT:    fmuls {{\.LCPI.*}}
 ; CHECK-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; CHECK-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
 ; CHECK-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    movb $1, 36(%ebx)
@@ -63,15 +63,15 @@ define void @computeJD(%struct.DateTime*) nounwind {
 ; CHECK-NEXT:    addl %eax, %ecx
 ; CHECK-NEXT:    fldl 28(%ebx)
 ; CHECK-NEXT:    fmuls {{\.LCPI.*}}
-; CHECK-NEXT:    fnstcw (%esp)
-; CHECK-NEXT:    movzwl (%esp), %eax
-; CHECK-NEXT:    movw $3199, (%esp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw (%esp)
-; CHECK-NEXT:    movw %ax, (%esp)
+; CHECK-NEXT:    fnstcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
+; CHECK-NEXT:    movw %ax, {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    movl %ecx, %eax
 ; CHECK-NEXT:    sarl $31, %eax
+; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fistpll {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fldcw (%esp)
+; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    addl {{[0-9]+}}(%esp), %ecx
 ; CHECK-NEXT:    adcl {{[0-9]+}}(%esp), %eax
 ; CHECK-NEXT:    addl {{[0-9]+}}(%esp), %ecx
diff --git a/llvm/test/CodeGen/X86/pr34080.ll b/llvm/test/CodeGen/X86/pr34080.ll
index 007b0827c67..8783daafe70 100644
--- a/llvm/test/CodeGen/X86/pr34080.ll
+++ b/llvm/test/CodeGen/X86/pr34080.ll
@@ -17,12 +17,12 @@ define void @_Z1fe(x86_fp80 %z) local_unnamed_addr #0 {
 ; SSE2-NEXT:    fldt 16(%rbp)
 ; SSE2-NEXT:    fnstcw -4(%rbp)
 ; SSE2-NEXT:    movzwl -4(%rbp), %eax
-; SSE2-NEXT:    movw $3199, -4(%rbp) ## imm = 0xC7F
-; SSE2-NEXT:    fldcw -4(%rbp)
-; SSE2-NEXT:    movw %ax, -4(%rbp)
-; SSE2-NEXT:    fistl -8(%rbp)
+; SSE2-NEXT:    orl $3072, %eax ## imm = 0xC00
+; SSE2-NEXT:    movw %ax, -8(%rbp)
+; SSE2-NEXT:    fldcw -8(%rbp)
+; SSE2-NEXT:    fistl -12(%rbp)
 ; SSE2-NEXT:    fldcw -4(%rbp)
-; SSE2-NEXT:    cvtsi2sdl -8(%rbp), %xmm0
+; SSE2-NEXT:    cvtsi2sdl -12(%rbp), %xmm0
 ; SSE2-NEXT:    movsd %xmm0, -64(%rbp)
 ; SSE2-NEXT:    movsd %xmm0, -32(%rbp)
 ; SSE2-NEXT:    fsubl -32(%rbp)
@@ -30,14 +30,14 @@ define void @_Z1fe(x86_fp80 %z) local_unnamed_addr #0 {
 ; SSE2-NEXT:    fmul %st, %st(1)
 ; SSE2-NEXT:    fnstcw -2(%rbp)
 ; SSE2-NEXT:    movzwl -2(%rbp), %eax
-; SSE2-NEXT:    movw $3199, -2(%rbp) ## imm = 0xC7F
-; SSE2-NEXT:    fldcw -2(%rbp)
-; SSE2-NEXT:    movw %ax, -2(%rbp)
+; SSE2-NEXT:    orl $3072, %eax ## imm = 0xC00
+; SSE2-NEXT:    movw %ax, -6(%rbp)
+; SSE2-NEXT:    fldcw -6(%rbp)
 ; SSE2-NEXT:    fxch %st(1)
-; SSE2-NEXT:    fistl -12(%rbp)
+; SSE2-NEXT:    fistl -16(%rbp)
 ; SSE2-NEXT:    fldcw -2(%rbp)
 ; SSE2-NEXT:    xorps %xmm0, %xmm0
-; SSE2-NEXT:    cvtsi2sdl -12(%rbp), %xmm0
+; SSE2-NEXT:    cvtsi2sdl -16(%rbp), %xmm0
 ; SSE2-NEXT:    movsd %xmm0, -56(%rbp)
 ; SSE2-NEXT:    movsd %xmm0, -24(%rbp)
 ; SSE2-NEXT:    fsubl -24(%rbp)
@@ -53,30 +53,30 @@ define void @_Z1fe(x86_fp80 %z) local_unnamed_addr #0 {
 ; SSE2-SCHEDULE-NEXT:    .cfi_offset %rbp, -16
 ; SSE2-SCHEDULE-NEXT:    movq %rsp, %rbp
 ; SSE2-SCHEDULE-NEXT:    .cfi_def_cfa_register %rbp
-; SSE2-SCHEDULE-NEXT:    fnstcw -4(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fldt 16(%rbp)
+; SSE2-SCHEDULE-NEXT:    fnstcw -4(%rbp)
 ; SSE2-SCHEDULE-NEXT:    movzwl -4(%rbp), %eax
-; SSE2-SCHEDULE-NEXT:    movw $3199, -4(%rbp) ## imm = 0xC7F
-; SSE2-SCHEDULE-NEXT:    fldcw -4(%rbp)
-; SSE2-SCHEDULE-NEXT:    movw %ax, -4(%rbp)
-; SSE2-SCHEDULE-NEXT:    fistl -8(%rbp)
+; SSE2-SCHEDULE-NEXT:    orl $3072, %eax ## imm = 0xC00
+; SSE2-SCHEDULE-NEXT:    movw %ax, -8(%rbp)
+; SSE2-SCHEDULE-NEXT:    fldcw -8(%rbp)
+; SSE2-SCHEDULE-NEXT:    fistl -12(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fldcw -4(%rbp)
-; SSE2-SCHEDULE-NEXT:    cvtsi2sdl -8(%rbp), %xmm0
+; SSE2-SCHEDULE-NEXT:    cvtsi2sdl -12(%rbp), %xmm0
 ; SSE2-SCHEDULE-NEXT:    movsd %xmm0, -64(%rbp)
 ; SSE2-SCHEDULE-NEXT:    movsd %xmm0, -32(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fsubl -32(%rbp)
 ; SSE2-SCHEDULE-NEXT:    flds {{.*}}(%rip)
-; SSE2-SCHEDULE-NEXT:    fnstcw -2(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fmul %st, %st(1)
+; SSE2-SCHEDULE-NEXT:    fnstcw -2(%rbp)
 ; SSE2-SCHEDULE-NEXT:    movzwl -2(%rbp), %eax
-; SSE2-SCHEDULE-NEXT:    movw $3199, -2(%rbp) ## imm = 0xC7F
-; SSE2-SCHEDULE-NEXT:    fldcw -2(%rbp)
-; SSE2-SCHEDULE-NEXT:    movw %ax, -2(%rbp)
+; SSE2-SCHEDULE-NEXT:    orl $3072, %eax ## imm = 0xC00
+; SSE2-SCHEDULE-NEXT:    movw %ax, -6(%rbp)
+; SSE2-SCHEDULE-NEXT:    fldcw -6(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fxch %st(1)
-; SSE2-SCHEDULE-NEXT:    fistl -12(%rbp)
+; SSE2-SCHEDULE-NEXT:    fistl -16(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fldcw -2(%rbp)
 ; SSE2-SCHEDULE-NEXT:    xorps %xmm0, %xmm0
-; SSE2-SCHEDULE-NEXT:    cvtsi2sdl -12(%rbp), %xmm0
+; SSE2-SCHEDULE-NEXT:    cvtsi2sdl -16(%rbp), %xmm0
 ; SSE2-SCHEDULE-NEXT:    movsd %xmm0, -56(%rbp)
 ; SSE2-SCHEDULE-NEXT:    movsd %xmm0, -24(%rbp)
 ; SSE2-SCHEDULE-NEXT:    fsubl -24(%rbp)
diff --git a/llvm/test/CodeGen/X86/pr40529.ll b/llvm/test/CodeGen/X86/pr40529.ll
index bbbf8e95019..04a468d1979 100644
--- a/llvm/test/CodeGen/X86/pr40529.ll
+++ b/llvm/test/CodeGen/X86/pr40529.ll
@@ -4,24 +4,24 @@
 define x86_fp80 @rem_pio2l_min(x86_fp80 %z) {
 ; CHECK-LABEL: rem_pio2l_min:
 ; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fldt {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; CHECK-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
 ; CHECK-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fistl -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
 ; CHECK-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fisubl -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    flds {{.*}}(%rip)
-; CHECK-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fmul %st, %st(1)
+; CHECK-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; CHECK-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
 ; CHECK-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fxch %st(1)
 ; CHECK-NEXT:    fistl -{{[0-9]+}}(%rsp)
 ; CHECK-NEXT:    fldcw -{{[0-9]+}}(%rsp)
diff --git a/llvm/test/CodeGen/X86/scalar-fp-to-i64.ll b/llvm/test/CodeGen/X86/scalar-fp-to-i64.ll
index d7e63ba046c..402ff12e7de 100644
--- a/llvm/test/CodeGen/X86/scalar-fp-to-i64.ll
+++ b/llvm/test/CodeGen/X86/scalar-fp-to-i64.ll
@@ -198,23 +198,24 @@ define i64 @f_to_u64(float %a) nounwind {
 ; SSE2_32_WIN-NEXT:    movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
 ; SSE2_32_WIN-NEXT:    movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
 ; SSE2_32_WIN-NEXT:    movaps %xmm0, %xmm2
-; SSE2_32_WIN-NEXT:    cmpltss %xmm1, %xmm2
-; SSE2_32_WIN-NEXT:    movaps %xmm2, %xmm3
-; SSE2_32_WIN-NEXT:    andps %xmm0, %xmm2
-; SSE2_32_WIN-NEXT:    xorl %edx, %edx
-; SSE2_32_WIN-NEXT:    ucomiss %xmm0, %xmm1
-; SSE2_32_WIN-NEXT:    subss %xmm1, %xmm0
-; SSE2_32_WIN-NEXT:    andnps %xmm0, %xmm3
-; SSE2_32_WIN-NEXT:    orps %xmm3, %xmm2
-; SSE2_32_WIN-NEXT:    movss %xmm2, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    subss %xmm1, %xmm2
+; SSE2_32_WIN-NEXT:    movaps %xmm0, %xmm3
+; SSE2_32_WIN-NEXT:    cmpltss %xmm1, %xmm3
+; SSE2_32_WIN-NEXT:    movaps %xmm3, %xmm4
+; SSE2_32_WIN-NEXT:    andnps %xmm2, %xmm4
+; SSE2_32_WIN-NEXT:    andps %xmm0, %xmm3
+; SSE2_32_WIN-NEXT:    orps %xmm4, %xmm3
+; SSE2_32_WIN-NEXT:    movss %xmm3, {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    flds {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    xorl %edx, %edx
+; SSE2_32_WIN-NEXT:    ucomiss %xmm0, %xmm1
 ; SSE2_32_WIN-NEXT:    setbe %dl
 ; SSE2_32_WIN-NEXT:    shll $31, %edx
 ; SSE2_32_WIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
@@ -229,23 +230,24 @@ define i64 @f_to_u64(float %a) nounwind {
 ; SSE2_32_LIN-NEXT:    movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
 ; SSE2_32_LIN-NEXT:    movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
 ; SSE2_32_LIN-NEXT:    movaps %xmm0, %xmm2
-; SSE2_32_LIN-NEXT:    cmpltss %xmm1, %xmm2
-; SSE2_32_LIN-NEXT:    movaps %xmm2, %xmm3
-; SSE2_32_LIN-NEXT:    andps %xmm0, %xmm2
-; SSE2_32_LIN-NEXT:    xorl %edx, %edx
-; SSE2_32_LIN-NEXT:    ucomiss %xmm0, %xmm1
-; SSE2_32_LIN-NEXT:    subss %xmm1, %xmm0
-; SSE2_32_LIN-NEXT:    andnps %xmm0, %xmm3
-; SSE2_32_LIN-NEXT:    orps %xmm3, %xmm2
-; SSE2_32_LIN-NEXT:    movss %xmm2, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    subss %xmm1, %xmm2
+; SSE2_32_LIN-NEXT:    movaps %xmm0, %xmm3
+; SSE2_32_LIN-NEXT:    cmpltss %xmm1, %xmm3
+; SSE2_32_LIN-NEXT:    movaps %xmm3, %xmm4
+; SSE2_32_LIN-NEXT:    andnps %xmm2, %xmm4
+; SSE2_32_LIN-NEXT:    andps %xmm0, %xmm3
+; SSE2_32_LIN-NEXT:    orps %xmm4, %xmm3
+; SSE2_32_LIN-NEXT:    movss %xmm3, {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    flds {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    xorl %edx, %edx
+; SSE2_32_LIN-NEXT:    ucomiss %xmm0, %xmm1
 ; SSE2_32_LIN-NEXT:    setbe %dl
 ; SSE2_32_LIN-NEXT:    shll $31, %edx
 ; SSE2_32_LIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
@@ -289,13 +291,13 @@ define i64 @f_to_u64(float %a) nounwind {
 ; X87_WIN-NEXT:    fstp %st(0)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    xorl %edx, %edx
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_WIN-NEXT:    setbe %al
-; X87_WIN-NEXT:    movzbl %al, %edx
+; X87_WIN-NEXT:    setbe %dl
 ; X87_WIN-NEXT:    shll $31, %edx
 ; X87_WIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -323,13 +325,13 @@ define i64 @f_to_u64(float %a) nounwind {
 ; X87_LIN-NEXT:    fstp %st(0)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    xorl %edx, %edx
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_LIN-NEXT:    setbe %al
-; X87_LIN-NEXT:    movzbl %al, %edx
+; X87_LIN-NEXT:    setbe %dl
 ; X87_LIN-NEXT:    shll $31, %edx
 ; X87_LIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -453,9 +455,9 @@ define i64 @f_to_s64(float %a) nounwind {
 ; SSE2_32_WIN-NEXT:    flds {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -472,9 +474,9 @@ define i64 @f_to_s64(float %a) nounwind {
 ; SSE2_32_LIN-NEXT:    flds {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -496,9 +498,9 @@ define i64 @f_to_s64(float %a) nounwind {
 ; X87_WIN-NEXT:    flds 8(%ebp)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -513,9 +515,9 @@ define i64 @f_to_s64(float %a) nounwind {
 ; X87_LIN-NEXT:    flds {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -686,23 +688,24 @@ define i64 @d_to_u64(double %a) nounwind {
 ; SSE2_32_WIN-NEXT:    movsd {{.*#+}} xmm0 = mem[0],zero
 ; SSE2_32_WIN-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero
 ; SSE2_32_WIN-NEXT:    movapd %xmm0, %xmm2
-; SSE2_32_WIN-NEXT:    cmpltsd %xmm1, %xmm2
-; SSE2_32_WIN-NEXT:    movapd %xmm2, %xmm3
-; SSE2_32_WIN-NEXT:    andpd %xmm0, %xmm2
-; SSE2_32_WIN-NEXT:    xorl %edx, %edx
-; SSE2_32_WIN-NEXT:    ucomisd %xmm0, %xmm1
-; SSE2_32_WIN-NEXT:    subsd %xmm1, %xmm0
-; SSE2_32_WIN-NEXT:    andnpd %xmm0, %xmm3
-; SSE2_32_WIN-NEXT:    orpd %xmm3, %xmm2
-; SSE2_32_WIN-NEXT:    movsd %xmm2, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    subsd %xmm1, %xmm2
+; SSE2_32_WIN-NEXT:    movapd %xmm0, %xmm3
+; SSE2_32_WIN-NEXT:    cmpltsd %xmm1, %xmm3
+; SSE2_32_WIN-NEXT:    movapd %xmm3, %xmm4
+; SSE2_32_WIN-NEXT:    andnpd %xmm2, %xmm4
+; SSE2_32_WIN-NEXT:    andpd %xmm0, %xmm3
+; SSE2_32_WIN-NEXT:    orpd %xmm4, %xmm3
+; SSE2_32_WIN-NEXT:    movsd %xmm3, {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldl {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    xorl %edx, %edx
+; SSE2_32_WIN-NEXT:    ucomisd %xmm0, %xmm1
 ; SSE2_32_WIN-NEXT:    setbe %dl
 ; SSE2_32_WIN-NEXT:    shll $31, %edx
 ; SSE2_32_WIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
@@ -717,23 +720,24 @@ define i64 @d_to_u64(double %a) nounwind {
 ; SSE2_32_LIN-NEXT:    movsd {{.*#+}} xmm0 = mem[0],zero
 ; SSE2_32_LIN-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero
 ; SSE2_32_LIN-NEXT:    movapd %xmm0, %xmm2
-; SSE2_32_LIN-NEXT:    cmpltsd %xmm1, %xmm2
-; SSE2_32_LIN-NEXT:    movapd %xmm2, %xmm3
-; SSE2_32_LIN-NEXT:    andpd %xmm0, %xmm2
-; SSE2_32_LIN-NEXT:    xorl %edx, %edx
-; SSE2_32_LIN-NEXT:    ucomisd %xmm0, %xmm1
-; SSE2_32_LIN-NEXT:    subsd %xmm1, %xmm0
-; SSE2_32_LIN-NEXT:    andnpd %xmm0, %xmm3
-; SSE2_32_LIN-NEXT:    orpd %xmm3, %xmm2
-; SSE2_32_LIN-NEXT:    movsd %xmm2, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    subsd %xmm1, %xmm2
+; SSE2_32_LIN-NEXT:    movapd %xmm0, %xmm3
+; SSE2_32_LIN-NEXT:    cmpltsd %xmm1, %xmm3
+; SSE2_32_LIN-NEXT:    movapd %xmm3, %xmm4
+; SSE2_32_LIN-NEXT:    andnpd %xmm2, %xmm4
+; SSE2_32_LIN-NEXT:    andpd %xmm0, %xmm3
+; SSE2_32_LIN-NEXT:    orpd %xmm4, %xmm3
+; SSE2_32_LIN-NEXT:    movsd %xmm3, {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldl {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    xorl %edx, %edx
+; SSE2_32_LIN-NEXT:    ucomisd %xmm0, %xmm1
 ; SSE2_32_LIN-NEXT:    setbe %dl
 ; SSE2_32_LIN-NEXT:    shll $31, %edx
 ; SSE2_32_LIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
@@ -777,13 +781,13 @@ define i64 @d_to_u64(double %a) nounwind {
 ; X87_WIN-NEXT:    fstp %st(0)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    xorl %edx, %edx
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_WIN-NEXT:    setbe %al
-; X87_WIN-NEXT:    movzbl %al, %edx
+; X87_WIN-NEXT:    setbe %dl
 ; X87_WIN-NEXT:    shll $31, %edx
 ; X87_WIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -811,13 +815,13 @@ define i64 @d_to_u64(double %a) nounwind {
 ; X87_LIN-NEXT:    fstp %st(0)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    xorl %edx, %edx
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_LIN-NEXT:    setbe %al
-; X87_LIN-NEXT:    movzbl %al, %edx
+; X87_LIN-NEXT:    setbe %dl
 ; X87_LIN-NEXT:    shll $31, %edx
 ; X87_LIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -941,9 +945,9 @@ define i64 @d_to_s64(double %a) nounwind {
 ; SSE2_32_WIN-NEXT:    fldl {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -960,9 +964,9 @@ define i64 @d_to_s64(double %a) nounwind {
 ; SSE2_32_LIN-NEXT:    fldl {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -984,9 +988,9 @@ define i64 @d_to_s64(double %a) nounwind {
 ; X87_WIN-NEXT:    fldl 8(%ebp)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1001,9 +1005,9 @@ define i64 @d_to_s64(double %a) nounwind {
 ; X87_LIN-NEXT:    fldl {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1185,16 +1189,16 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; SSE2_32_WIN-NEXT:    flds __real@5f000000
 ; SSE2_32_WIN-NEXT:    fld %st(1)
 ; SSE2_32_WIN-NEXT:    fsub %st(1), %st
-; SSE2_32_WIN-NEXT:    xorl %edx, %edx
 ; SSE2_32_WIN-NEXT:    fxch %st(1)
 ; SSE2_32_WIN-NEXT:    fucompi %st(2), %st
 ; SSE2_32_WIN-NEXT:    fcmovnbe %st(1), %st
 ; SSE2_32_WIN-NEXT:    fstp %st(1)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    xorl %edx, %edx
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    setbe %dl
@@ -1212,16 +1216,16 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; SSE2_32_LIN-NEXT:    flds {{\.LCPI.*}}
 ; SSE2_32_LIN-NEXT:    fld %st(1)
 ; SSE2_32_LIN-NEXT:    fsub %st(1), %st
-; SSE2_32_LIN-NEXT:    xorl %edx, %edx
 ; SSE2_32_LIN-NEXT:    fxch %st(1)
 ; SSE2_32_LIN-NEXT:    fucompi %st(2), %st
 ; SSE2_32_LIN-NEXT:    fcmovnbe %st(1), %st
 ; SSE2_32_LIN-NEXT:    fstp %st(1)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    xorl %edx, %edx
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    setbe %dl
@@ -1238,16 +1242,16 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; SSE2_64_WIN-NEXT:    flds __real@{{.*}}(%rip)
 ; SSE2_64_WIN-NEXT:    fld %st(1)
 ; SSE2_64_WIN-NEXT:    fsub %st(1), %st
-; SSE2_64_WIN-NEXT:    xorl %eax, %eax
 ; SSE2_64_WIN-NEXT:    fxch %st(1)
 ; SSE2_64_WIN-NEXT:    fucompi %st(2), %st
 ; SSE2_64_WIN-NEXT:    fcmovnbe %st(1), %st
 ; SSE2_64_WIN-NEXT:    fstp %st(1)
 ; SSE2_64_WIN-NEXT:    fnstcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    movzwl {{[0-9]+}}(%rsp), %ecx
-; SSE2_64_WIN-NEXT:    movw $3199, {{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
+; SSE2_64_WIN-NEXT:    xorl %eax, %eax
+; SSE2_64_WIN-NEXT:    orl $3072, %ecx # imm = 0xC00
 ; SSE2_64_WIN-NEXT:    movw %cx, {{[0-9]+}}(%rsp)
+; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    fistpll {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    setbe %al
@@ -1262,16 +1266,16 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; SSE2_64_LIN-NEXT:    flds {{.*}}(%rip)
 ; SSE2_64_LIN-NEXT:    fld %st(1)
 ; SSE2_64_LIN-NEXT:    fsub %st(1), %st
-; SSE2_64_LIN-NEXT:    xorl %eax, %eax
 ; SSE2_64_LIN-NEXT:    fxch %st(1)
 ; SSE2_64_LIN-NEXT:    fucompi %st(2), %st
 ; SSE2_64_LIN-NEXT:    fcmovnbe %st(1), %st
 ; SSE2_64_LIN-NEXT:    fstp %st(1)
 ; SSE2_64_LIN-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    movzwl -{{[0-9]+}}(%rsp), %ecx
-; SSE2_64_LIN-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE2_64_LIN-NEXT:    xorl %eax, %eax
+; SSE2_64_LIN-NEXT:    orl $3072, %ecx # imm = 0xC00
 ; SSE2_64_LIN-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
+; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    setbe %al
@@ -1302,13 +1306,13 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; X87_WIN-NEXT:    fstp %st(0)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    xorl %edx, %edx
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_WIN-NEXT:    setbe %al
-; X87_WIN-NEXT:    movzbl %al, %edx
+; X87_WIN-NEXT:    setbe %dl
 ; X87_WIN-NEXT:    shll $31, %edx
 ; X87_WIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1336,13 +1340,13 @@ define i64 @x_to_u64(x86_fp80 %a) nounwind {
 ; X87_LIN-NEXT:    fstp %st(0)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    xorl %edx, %edx
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
-; X87_LIN-NEXT:    setbe %al
-; X87_LIN-NEXT:    movzbl %al, %edx
+; X87_LIN-NEXT:    setbe %dl
 ; X87_LIN-NEXT:    shll $31, %edx
 ; X87_LIN-NEXT:    xorl {{[0-9]+}}(%esp), %edx
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1442,9 +1446,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; SSE2_32_WIN-NEXT:    fldt 8(%ebp)
 ; SSE2_32_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1459,9 +1463,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; SSE2_32_LIN-NEXT:    fldt {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; SSE2_32_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_32_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; SSE2_32_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1475,9 +1479,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; SSE2_64_WIN-NEXT:    fldt (%rcx)
 ; SSE2_64_WIN-NEXT:    fnstcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    movzwl {{[0-9]+}}(%rsp), %eax
-; SSE2_64_WIN-NEXT:    movw $3199, {{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
+; SSE2_64_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_64_WIN-NEXT:    movw %ax, {{[0-9]+}}(%rsp)
+; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    fistpll {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    fldcw {{[0-9]+}}(%rsp)
 ; SSE2_64_WIN-NEXT:    movq {{[0-9]+}}(%rsp), %rax
@@ -1489,9 +1493,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; SSE2_64_LIN-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; SSE2_64_LIN-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE2_64_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE2_64_LIN-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE2_64_LIN-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
@@ -1506,9 +1510,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; X87_WIN-NEXT:    fldt 8(%ebp)
 ; X87_WIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_WIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_WIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_WIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
@@ -1523,9 +1527,9 @@ define i64 @x_to_s64(x86_fp80 %a) nounwind {
 ; X87_LIN-NEXT:    fldt {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fnstcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
-; X87_LIN-NEXT:    movw $3199, {{[0-9]+}}(%esp) # imm = 0xC7F
-; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    orl $3072, %eax # imm = 0xC00
 ; X87_LIN-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fistpll {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; X87_LIN-NEXT:    movl {{[0-9]+}}(%esp), %eax
diff --git a/llvm/test/CodeGen/X86/trunc-to-bool.ll b/llvm/test/CodeGen/X86/trunc-to-bool.ll
index d4f2e585283..727374bd265 100644
--- a/llvm/test/CodeGen/X86/trunc-to-bool.ll
+++ b/llvm/test/CodeGen/X86/trunc-to-bool.ll
@@ -81,24 +81,24 @@ cond_false:
 define i32 @test5(double %d) nounwind {
 ; CHECK-LABEL: test5:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    pushl %eax
+; CHECK-NEXT:    subl $8, %esp
 ; CHECK-NEXT:    fldl {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fnstcw (%esp)
-; CHECK-NEXT:    movzwl (%esp), %eax
-; CHECK-NEXT:    movw $3199, (%esp) # imm = 0xC7F
-; CHECK-NEXT:    fldcw (%esp)
-; CHECK-NEXT:    movw %ax, (%esp)
+; CHECK-NEXT:    fnstcw {{[0-9]+}}(%esp)
+; CHECK-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    orl $3072, %eax # imm = 0xC00
+; CHECK-NEXT:    movw %ax, {{[0-9]+}}(%esp)
+; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    fistps {{[0-9]+}}(%esp)
-; CHECK-NEXT:    fldcw (%esp)
+; CHECK-NEXT:    fldcw {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    testb $1, {{[0-9]+}}(%esp)
 ; CHECK-NEXT:    je .LBB4_2
 ; CHECK-NEXT:  # %bb.1: # %cond_true
 ; CHECK-NEXT:    movl $21, %eax
-; CHECK-NEXT:    popl %ecx
+; CHECK-NEXT:    addl $8, %esp
 ; CHECK-NEXT:    retl
 ; CHECK-NEXT:  .LBB4_2: # %cond_false
 ; CHECK-NEXT:    movl $42, %eax
-; CHECK-NEXT:    popl %ecx
+; CHECK-NEXT:    addl $8, %esp
 ; CHECK-NEXT:    retl
     %tmp = fptosi double %d to i1
     br i1 %tmp, label %cond_true, label %cond_false
diff --git a/llvm/test/CodeGen/X86/vec_fp_to_int-widen.ll b/llvm/test/CodeGen/X86/vec_fp_to_int-widen.ll
index 6c579f50c1a..3c04c89cf51 100644
--- a/llvm/test/CodeGen/X86/vec_fp_to_int-widen.ll
+++ b/llvm/test/CodeGen/X86/vec_fp_to_int-widen.ll
@@ -2224,16 +2224,16 @@ define <4 x i32> @fptosi_2f80_to_4i32(<2 x x86_fp80> %a) nounwind {
 ; SSE-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; SSE-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; SSE-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fistpl -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
diff --git a/llvm/test/CodeGen/X86/vec_fp_to_int.ll b/llvm/test/CodeGen/X86/vec_fp_to_int.ll
index 6ef7f20fdde..f7047a68f14 100644
--- a/llvm/test/CodeGen/X86/vec_fp_to_int.ll
+++ b/llvm/test/CodeGen/X86/vec_fp_to_int.ll
@@ -2294,16 +2294,16 @@ define <4 x i32> @fptosi_2f80_to_4i32(<2 x x86_fp80> %a) nounwind {
 ; SSE-NEXT:    fldt {{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; SSE-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
-; SSE-NEXT:    movw $3199, -{{[0-9]+}}(%rsp) # imm = 0xC7F
-; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    orl $3072, %eax # imm = 0xC00
 ; SSE-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fistpll -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    fldcw -{{[0-9]+}}(%rsp)
 ; SSE-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero