diff options
| author | Nick Lewycky <nicholas@mxc.ca> | 2011-03-11 09:00:19 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-03-11 09:00:19 +0000 |
| commit | b69050a94c1c9266ab048a79c8375e5b14d87c72 (patch) | |
| tree | bf7c5218182894c05403125a704ce60ba3aa5b18 /test | |
| parent | 6fd2472b1b2d8f6a64b38874cbca95d3578e16a4 (diff) | |
| download | llvm-b69050a94c1c9266ab048a79c8375e5b14d87c72.tar.gz llvm-b69050a94c1c9266ab048a79c8375e5b14d87c72.tar.bz2 llvm-b69050a94c1c9266ab048a79c8375e5b14d87c72.tar.xz | |
Teach ComputeMaskedBits about nsw on add. I don't think there's anything we can
do with nuw here, but sub and mul should be given similar treatment.
Fixes PR9343 #15!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127463 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstSimplify/compare.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/compare.ll b/test/Transforms/InstSimplify/compare.ll index b5146ee740..75a36b499e 100644 --- a/test/Transforms/InstSimplify/compare.ll +++ b/test/Transforms/InstSimplify/compare.ll @@ -261,6 +261,16 @@ define i1 @srem1(i32 %X) { ; CHECK: ret i1 false } +; PR9343 #15 +; CHECK: @srem2 +; CHECK: ret i1 false +define i1 @srem2(i16 %X, i32 %Y) { + %A = zext i16 %X to i32 + %B = add nsw i32 %A, 1 + %C = srem i32 %B, %Y + %D = icmp slt i32 %C, 0 + ret i1 %D +} define i1 @udiv1(i32 %X) { ; CHECK: @udiv1 %A = udiv i32 %X, 1000000 |