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Diffstat (limited to 'test/Transforms/InstSimplify/reassociate.ll')
| -rw-r--r-- | test/Transforms/InstSimplify/reassociate.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/reassociate.ll b/test/Transforms/InstSimplify/reassociate.ll index 928442ac56..3c8169e5e2 100644 --- a/test/Transforms/InstSimplify/reassociate.ll +++ b/test/Transforms/InstSimplify/reassociate.ll @@ -137,6 +137,7 @@ define i32 @sdiv5(i32 %x, i32 %y) { ; CHECK: ret i32 %x } + define i32 @udiv1(i32 %x, i32 %y) { ; CHECK: @udiv1 ; (no overflow X * Y) / Y -> X @@ -164,3 +165,22 @@ define i32 @udiv3(i32 %x, i32 %y) { ret i32 %div ; CHECK: ret i32 0 } + +define i32 @udiv4(i32 %x, i32 %y) { +; CHECK: @udiv4 +; (X / Y) * Y -> X if the division is exact + %div = udiv exact i32 %x, %y + %mul = mul i32 %div, %y + ret i32 %mul +; CHECK: ret i32 %x +} + +define i32 @udiv5(i32 %x, i32 %y) { +; CHECK: @udiv5 +; Y * (X / Y) -> X if the division is exact + %div = udiv exact i32 %x, %y + %mul = mul i32 %y, %div + ret i32 %mul +; CHECK: ret i32 %x +} + |