diff options
Diffstat (limited to 'test/CodeGen/X86/sub-with-overflow.ll')
| -rw-r--r-- | test/CodeGen/X86/sub-with-overflow.ll | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/test/CodeGen/X86/sub-with-overflow.ll b/test/CodeGen/X86/sub-with-overflow.ll index 19f4079..4522e91 100644 --- a/test/CodeGen/X86/sub-with-overflow.ll +++ b/test/CodeGen/X86/sub-with-overflow.ll @@ -1,5 +1,4 @@ -; RUN: llc < %s -march=x86 | grep {jo} | count 1 -; RUN: llc < %s -march=x86 | grep {jb} | count 1 +; RUN: llc < %s -march=x86 | FileCheck %s @ok = internal constant [4 x i8] c"%d\0A\00" @no = internal constant [4 x i8] c"no\0A\00" @@ -18,6 +17,10 @@ normal: overflow: %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false + +; CHECK: func1: +; CHECK: subl 20(%esp) +; CHECK-NEXT: jo } define i1 @func2(i32 %v1, i32 %v2) nounwind { @@ -34,8 +37,23 @@ normal: carry: %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false + +; CHECK: func2: +; CHECK: subl 20(%esp) +; CHECK-NEXT: jb } declare i32 @printf(i8*, ...) nounwind 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 { +entry: + %t = call {i32, i1} @llvm.ssub.with.overflow.i32(i32 %x, i32 1) + %obit = extractvalue {i32, i1} %t, 1 + ret i1 %obit + +; CHECK: func3: +; CHECK: decl +; CHECK-NEXT: seto +} |
