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Diffstat (limited to 'test/Transforms/InstCombine/2017-07-07-UMul-ZExt.ll')
| -rw-r--r-- | test/Transforms/InstCombine/2017-07-07-UMul-ZExt.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2017-07-07-UMul-ZExt.ll b/test/Transforms/InstCombine/2017-07-07-UMul-ZExt.ll new file mode 100644 index 0000000000000..3c4e08b5b515c --- /dev/null +++ b/test/Transforms/InstCombine/2017-07-07-UMul-ZExt.ll @@ -0,0 +1,29 @@ +; RUN: opt < %s -instcombine -S | FileCheck %s + +; CHECK: llvm.umul.with.overflow +define i32 @sterix(i32, i8, i64) { +entry: + %conv = zext i32 %0 to i64 + %conv1 = sext i8 %1 to i32 + %mul = mul i32 %conv1, 1945964878 + %sh_prom = trunc i64 %2 to i32 + %shr = lshr i32 %mul, %sh_prom + %conv2 = zext i32 %shr to i64 + %mul3 = mul nuw nsw i64 %conv, %conv2 + %conv6 = and i64 %mul3, 4294967295 + %tobool = icmp ne i64 %conv6, %mul3 + br i1 %tobool, label %lor.end, label %lor.rhs + +lor.rhs: + %and = and i64 %2, %mul3 + %conv4 = trunc i64 %and to i32 + %tobool7 = icmp ne i32 %conv4, 0 + %lnot = xor i1 %tobool7, true + br label %lor.end + +lor.end: + %3 = phi i1 [ true, %entry ], [ %lnot, %lor.rhs ] + %conv8 = zext i1 %3 to i32 + ret i32 %conv8 +} + |