diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/sdiv-guard.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/sdiv-guard.ll b/llvm/test/Transforms/InstCombine/sdiv-guard.ll new file mode 100644 index 00000000000..fda535157a4 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/sdiv-guard.ll @@ -0,0 +1,21 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instcombine -S | FileCheck %s + +declare void @llvm.experimental.guard(i1, ...) + +; FIXME: If %flag is false then %s == 0 and guard should be triggered. + +define i32 @a(i1 %flag, i32 %X) nounwind readnone { +; CHECK-LABEL: @a( +; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[X:%.*]], 0 +; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[CMP]]) #1 [ "deopt"() ] +; CHECK-NEXT: [[R:%.*]] = sdiv i32 100, [[X]] +; CHECK-NEXT: ret i32 [[R]] +; + %s = select i1 %flag, i32 %X, i32 0 + %cmp = icmp ne i32 %s, 0 + call void(i1, ...) @llvm.experimental.guard( i1 %cmp )[ "deopt"() ] + %r = sdiv i32 100, %s + ret i32 %r +} + |
