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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-03-05 04:28:48 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-03-05 04:28:48 +0000 |
| commit | 9feda1730c225589e144fb1f86a86a8cf3f39c9e (patch) | |
| tree | e024f109b317ad7d10ff2c005376054d3cfa50e7 /test/Transforms/InstCombine/icmp.ll | |
| parent | 874be74179b087be36a6e7869f3aa8b70732aca1 (diff) | |
| download | llvm-9feda1730c225589e144fb1f86a86a8cf3f39c9e.tar.gz llvm-9feda1730c225589e144fb1f86a86a8cf3f39c9e.tar.bz2 llvm-9feda1730c225589e144fb1f86a86a8cf3f39c9e.tar.xz | |
Try once again to optimize "icmp (srem X, Y), Y" by turning the comparison into
true/false or "icmp slt/sge Y, 0".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127063 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/icmp.ll')
| -rw-r--r-- | test/Transforms/InstCombine/icmp.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/icmp.ll b/test/Transforms/InstCombine/icmp.ll index fba273550b..fb43e59453 100644 --- a/test/Transforms/InstCombine/icmp.ll +++ b/test/Transforms/InstCombine/icmp.ll @@ -403,3 +403,19 @@ define i1 @test41(i32 %X, i32 %Y) { %B = icmp ugt i32 %Y, %A ret i1 %B } + +; CHECK: @test42 +; CHECK: %B = icmp sgt i32 %Y, -1 +define i1 @test42(i32 %X, i32 %Y) { + %A = srem i32 %X, %Y + %B = icmp slt i32 %A, %Y + ret i1 %B +} + +; CHECK: @test43 +; CHECK: %B = icmp slt i32 %Y, 0 +define i1 @test43(i32 %X, i32 %Y) { + %A = srem i32 %X, %Y + %B = icmp slt i32 %Y, %A + ret i1 %B +} |