diff options
Diffstat (limited to 'test/Transforms/InstCombine/intrinsics.ll')
| -rw-r--r-- | test/Transforms/InstCombine/intrinsics.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/intrinsics.ll b/test/Transforms/InstCombine/intrinsics.ll index 50e7f1f..332cd46 100644 --- a/test/Transforms/InstCombine/intrinsics.ll +++ b/test/Transforms/InstCombine/intrinsics.ll @@ -112,6 +112,33 @@ define i8 @umultest2(i8 %A, i1* %overflowPtr) { ; CHECK-NEXT: ret i8 %A } +%ov.result.32 = type { i32, i1 } +declare %ov.result.32 @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone + +define i32 @umultest3(i32 %n) nounwind { + %shr = lshr i32 %n, 2 + %mul = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %shr, i32 3) + %ov = extractvalue %ov.result.32 %mul, 1 + %res = extractvalue %ov.result.32 %mul, 0 + %ret = select i1 %ov, i32 -1, i32 %res + ret i32 %ret +; CHECK: @umultest3 +; CHECK-NEXT: shr +; CHECK-NEXT: mul nuw +; CHECK-NEXT: ret +} + +define i32 @umultest4(i32 %n) nounwind { + %shr = lshr i32 %n, 1 + %mul = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %shr, i32 4) + %ov = extractvalue %ov.result.32 %mul, 1 + %res = extractvalue %ov.result.32 %mul, 0 + %ret = select i1 %ov, i32 -1, i32 %res + ret i32 %ret +; CHECK: @umultest4 +; CHECK: umul.with.overflow +} + define void @powi(double %V, double *%P) { entry: %A = tail call double @llvm.powi.f64(double %V, i32 -1) nounwind |
