diff options
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/div.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/div.ll b/llvm/test/Transforms/InstCombine/div.ll index 26e9e336823..5a884ac671d 100644 --- a/llvm/test/Transforms/InstCombine/div.ll +++ b/llvm/test/Transforms/InstCombine/div.ll @@ -247,3 +247,20 @@ define i32 @test28(i32 %a) { ; CHECK-NEXT: %div = mul nuw i32 %a, 12 ; CHECK-NEXT: ret i32 %div } + +define i32 @test29(i32 %a) { + %mul = shl nsw i32 %a, 31 + %div = sdiv i32 %mul, -2147483648 + ret i32 %div +; CHECK-LABEL: @test29( +; CHECK-NEXT: %[[and:.*]] = and i32 %a, 1 +; CHECK-NEXT: ret i32 %[[and]] +} + +define i32 @test30(i32 %a) { + %mul = shl nuw i32 %a, 31 + %div = udiv i32 %mul, -2147483648 + ret i32 %div +; CHECK-LABEL: @test30( +; CHECK-NEXT: ret i32 %a +} |
