diff options
| -rw-r--r-- | llvm/test/CodeGen/X86/sub-with-overflow.ll | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/llvm/test/CodeGen/X86/sub-with-overflow.ll b/llvm/test/CodeGen/X86/sub-with-overflow.ll index fa00d6f61c7..6de0beeabdf 100644 --- a/llvm/test/CodeGen/X86/sub-with-overflow.ll +++ b/llvm/test/CodeGen/X86/sub-with-overflow.ll @@ -1,9 +1,29 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=i686-linux | FileCheck %s @ok = internal constant [4 x i8] c"%d\0A\00" @no = internal constant [4 x i8] c"no\0A\00" define i1 @func1(i32 %v1, i32 %v2) nounwind { +; CHECK-LABEL: func1: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: subl $12, %esp +; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax +; CHECK-NEXT: subl {{[0-9]+}}(%esp), %eax +; CHECK-NEXT: jno .LBB0_1 +; CHECK-NEXT: # %bb.2: # %overflow +; CHECK-NEXT: movl $no, (%esp) +; CHECK-NEXT: calll printf +; CHECK-NEXT: xorl %eax, %eax +; CHECK-NEXT: addl $12, %esp +; CHECK-NEXT: retl +; CHECK-NEXT: .LBB0_1: # %normal +; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp) +; CHECK-NEXT: movl $ok, (%esp) +; CHECK-NEXT: calll printf +; CHECK-NEXT: movb $1, %al +; CHECK-NEXT: addl $12, %esp +; CHECK-NEXT: retl entry: %t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %v1, i32 %v2) %sum = extractvalue {i32, i1} %t, 0 @@ -18,12 +38,28 @@ overflow: %t2 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false -; CHECK-LABEL: func1: -; CHECK: subl 20(%esp) -; CHECK-NEXT: jno } define i1 @func2(i32 %v1, i32 %v2) nounwind { +; CHECK-LABEL: func2: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: subl $12, %esp +; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax +; CHECK-NEXT: subl {{[0-9]+}}(%esp), %eax +; CHECK-NEXT: jae .LBB1_1 +; CHECK-NEXT: # %bb.2: # %carry +; CHECK-NEXT: movl $no, (%esp) +; CHECK-NEXT: calll printf +; CHECK-NEXT: xorl %eax, %eax +; CHECK-NEXT: addl $12, %esp +; CHECK-NEXT: retl +; CHECK-NEXT: .LBB1_1: # %normal +; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp) +; CHECK-NEXT: movl $ok, (%esp) +; CHECK-NEXT: calll printf +; CHECK-NEXT: movb $1, %al +; CHECK-NEXT: addl $12, %esp +; CHECK-NEXT: retl entry: %t = call {i32, i1} @llvm.usub.with.overflow.i32(i32 %v1, i32 %v2) %sum = extractvalue {i32, i1} %t, 0 @@ -38,9 +74,6 @@ carry: %t2 = tail call i32 (i8*, ...) @printf( i8* getelementptr ([4 x i8], [4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false -; CHECK-LABEL: func2: -; CHECK: subl 20(%esp) -; CHECK-NEXT: jae } declare i32 @printf(i8*, ...) nounwind @@ -48,12 +81,15 @@ declare {i32, i1} @llvm.ssub.with.overflow.i32(i32, i32) declare {i32, i1} @llvm.usub.with.overflow.i32(i32, i32) define i1 @func3(i32 %x) nounwind { +; CHECK-LABEL: func3: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax +; CHECK-NEXT: decl %eax +; CHECK-NEXT: seto %al +; CHECK-NEXT: retl entry: %t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %x, i32 1) %obit = extractvalue {i32, i1} %t, 1 ret i1 %obit -; CHECK-LABEL: func3: -; CHECK: decl -; CHECK-NEXT: seto } |
