[X86][NFC] Add more tests for memset.

llvm-svn: 348465

1 files changed, 358 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/memset-zero.ll b/llvm/test/CodeGen/X86/memset-zero.ll
new file mode 100644
index 00000000000..220968d687e
--- /dev/null
+++ b/llvm/test/CodeGen/X86/memset-zero.ll
@@ -0,0 +1,358 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-linux | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-linux -mcpu=core2 | FileCheck %s --check-prefix=CORE2
+; RUN: llc < %s -mtriple=x86_64-unknown-linux -mcpu=nehalem | FileCheck %s --check-prefix=NEHALEM
+
+declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) nounwind
+
+define void @memset_0(i8* %a) nounwind  {
+; X86-LABEL: memset_0:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_0:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_0:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 0, i1 false)
+	ret void
+}
+
+define void @memset_4(i8* %a) nounwind  {
+; X86-LABEL: memset_4:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_4:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movl $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_4:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movl $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 4, i1 false)
+	ret void
+}
+
+define void @memset_5(i8* %a) nounwind  {
+; X86-LABEL: memset_5:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_5:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 4(%rdi)
+; CORE2-NEXT:    movl $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_5:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movb $0, 4(%rdi)
+; NEHALEM-NEXT:    movl $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 5, i1 false)
+	ret void
+}
+
+define void @memset_7(i8* %a) nounwind  {
+; X86-LABEL: memset_7:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 6(%eax)
+; X86-NEXT:    movw $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_7:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 6(%rdi)
+; CORE2-NEXT:    movw $0, 4(%rdi)
+; CORE2-NEXT:    movl $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_7:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movb $0, 6(%rdi)
+; NEHALEM-NEXT:    movw $0, 4(%rdi)
+; NEHALEM-NEXT:    movl $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 7, i1 false)
+	ret void
+}
+
+define void @memset_8(i8* %a) nounwind  {
+; X86-LABEL: memset_8:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_8:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_8:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movq $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 8, i1 false)
+	ret void
+}
+
+define void @memset_11(i8* %a) nounwind  {
+; X86-LABEL: memset_11:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 10(%eax)
+; X86-NEXT:    movw $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_11:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 10(%rdi)
+; CORE2-NEXT:    movw $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_11:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movb $0, 10(%rdi)
+; NEHALEM-NEXT:    movw $0, 8(%rdi)
+; NEHALEM-NEXT:    movq $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 11, i1 false)
+	ret void
+}
+
+define void @memset_13(i8* %a) nounwind  {
+; X86-LABEL: memset_13:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_13:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movq $0, 5(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_13:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movq $0, 5(%rdi)
+; NEHALEM-NEXT:    movq $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 13, i1 false)
+	ret void
+}
+
+define void @memset_15(i8* %a) nounwind  {
+; X86-LABEL: memset_15:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 14(%eax)
+; X86-NEXT:    movw $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_15:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movq $0, 7(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_15:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    movq $0, 7(%rdi)
+; NEHALEM-NEXT:    movq $0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 15, i1 false)
+	ret void
+}
+
+define void @memset_16(i8* %a) nounwind  {
+; X86-LABEL: memset_16:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_16:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movq $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_16:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    xorps %xmm0, %xmm0
+; NEHALEM-NEXT:    movups %xmm0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 16, i1 false)
+	ret void
+}
+
+define void @memset_17(i8* %a) nounwind  {
+; X86-LABEL: memset_17:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 16(%eax)
+; X86-NEXT:    movl $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_17:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 16(%rdi)
+; CORE2-NEXT:    movq $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_17:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    xorps %xmm0, %xmm0
+; NEHALEM-NEXT:    movups %xmm0, (%rdi)
+; NEHALEM-NEXT:    movb $0, 16(%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 17, i1 false)
+	ret void
+}
+
+define void @memset_19(i8* %a) nounwind  {
+; X86-LABEL: memset_19:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 18(%eax)
+; X86-NEXT:    movw $0, 16(%eax)
+; X86-NEXT:    movl $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_19:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 18(%rdi)
+; CORE2-NEXT:    movw $0, 16(%rdi)
+; CORE2-NEXT:    movq $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_19:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    xorps %xmm0, %xmm0
+; NEHALEM-NEXT:    movups %xmm0, (%rdi)
+; NEHALEM-NEXT:    movb $0, 18(%rdi)
+; NEHALEM-NEXT:    movw $0, 16(%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 19, i1 false)
+	ret void
+}
+
+define void @memset_31(i8* %a) nounwind  {
+; X86-LABEL: memset_31:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 30(%eax)
+; X86-NEXT:    movw $0, 28(%eax)
+; X86-NEXT:    movl $0, 24(%eax)
+; X86-NEXT:    movl $0, 20(%eax)
+; X86-NEXT:    movl $0, 16(%eax)
+; X86-NEXT:    movl $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_31:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movq $0, 23(%rdi)
+; CORE2-NEXT:    movq $0, 16(%rdi)
+; CORE2-NEXT:    movq $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_31:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    xorps %xmm0, %xmm0
+; NEHALEM-NEXT:    movups %xmm0, 15(%rdi)
+; NEHALEM-NEXT:    movups %xmm0, (%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 31, i1 false)
+	ret void
+}
+
+define void @memset_35(i8* %a) nounwind  {
+; X86-LABEL: memset_35:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movb $0, 34(%eax)
+; X86-NEXT:    movw $0, 32(%eax)
+; X86-NEXT:    movl $0, 28(%eax)
+; X86-NEXT:    movl $0, 24(%eax)
+; X86-NEXT:    movl $0, 20(%eax)
+; X86-NEXT:    movl $0, 16(%eax)
+; X86-NEXT:    movl $0, 12(%eax)
+; X86-NEXT:    movl $0, 8(%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
+; X86-NEXT:    retl
+;
+; CORE2-LABEL: memset_35:
+; CORE2:       # %bb.0: # %entry
+; CORE2-NEXT:    movb $0, 34(%rdi)
+; CORE2-NEXT:    movw $0, 32(%rdi)
+; CORE2-NEXT:    movq $0, 24(%rdi)
+; CORE2-NEXT:    movq $0, 16(%rdi)
+; CORE2-NEXT:    movq $0, 8(%rdi)
+; CORE2-NEXT:    movq $0, (%rdi)
+; CORE2-NEXT:    retq
+;
+; NEHALEM-LABEL: memset_35:
+; NEHALEM:       # %bb.0: # %entry
+; NEHALEM-NEXT:    xorps %xmm0, %xmm0
+; NEHALEM-NEXT:    movups %xmm0, 16(%rdi)
+; NEHALEM-NEXT:    movups %xmm0, (%rdi)
+; NEHALEM-NEXT:    movb $0, 34(%rdi)
+; NEHALEM-NEXT:    movw $0, 32(%rdi)
+; NEHALEM-NEXT:    retq
+entry:
+	call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 35, i1 false)
+	ret void
+}