diff options
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/extract-cost.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/extract-cost.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/extract-cost.ll b/llvm/test/Transforms/SimplifyCFG/extract-cost.ll new file mode 100644 index 00000000000..9c867256e78 --- /dev/null +++ b/llvm/test/Transforms/SimplifyCFG/extract-cost.ll @@ -0,0 +1,22 @@ +; RUN: opt -simplifycfg -S < %s | FileCheck %s + +declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1 + +define i32 @f(i32 %a, i32 %b) #0 { +entry: + %uadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b) + %cmp = extractvalue { i32, i1 } %uadd, 1 + br i1 %cmp, label %return, label %if.end + +if.end: ; preds = %entry + %0 = extractvalue { i32, i1 } %uadd, 0 + br label %return + +return: ; preds = %entry, %if.end + %retval.0 = phi i32 [ %0, %if.end ], [ 0, %entry ] + ret i32 %retval.0 + +; CHECK-LABEL: @f( +; CHECK-NOT: phi +; CHECK: select +} |
