diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstSimplify/2010-12-20-Reassociate.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/2010-12-20-Reassociate.ll b/test/Transforms/InstSimplify/2010-12-20-Reassociate.ll index 1372466..928442a 100644 --- a/test/Transforms/InstSimplify/2010-12-20-Reassociate.ll +++ b/test/Transforms/InstSimplify/2010-12-20-Reassociate.ll @@ -119,6 +119,24 @@ define i32 @sdiv3(i32 %x, i32 %y) { ; CHECK: ret i32 0 } +define i32 @sdiv4(i32 %x, i32 %y) { +; CHECK: @sdiv4 +; (X / Y) * Y -> X if the division is exact + %div = sdiv exact i32 %x, %y + %mul = mul i32 %div, %y + ret i32 %mul +; CHECK: ret i32 %x +} + +define i32 @sdiv5(i32 %x, i32 %y) { +; CHECK: @sdiv5 +; Y * (X / Y) -> X if the division is exact + %div = sdiv exact i32 %x, %y + %mul = mul i32 %y, %div + ret i32 %mul +; CHECK: ret i32 %x +} + define i32 @udiv1(i32 %x, i32 %y) { ; CHECK: @udiv1 ; (no overflow X * Y) / Y -> X |