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| author | Duncan Sands <baldrick@free.fr> | 2012-02-24 15:16:31 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2012-02-24 15:16:31 +0000 |
| commit | e170c76ccdcf9b0343d2d5a2805010ff77b8b56e (patch) | |
| tree | 2129356bb19d6704ae20679b6680c6f95ed6a942 /test/Transforms/GVN | |
| parent | 8b93ff298cbaa8a16f950374e1be1f7e5114da8f (diff) | |
| download | llvm-e170c76ccdcf9b0343d2d5a2805010ff77b8b56e.tar.gz llvm-e170c76ccdcf9b0343d2d5a2805010ff77b8b56e.tar.bz2 llvm-e170c76ccdcf9b0343d2d5a2805010ff77b8b56e.tar.xz | |
Teach GVN that x+y is the same as y+x and that x<y is the same as y>x.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151365 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GVN')
| -rw-r--r-- | test/Transforms/GVN/commute.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Transforms/GVN/commute.ll b/test/Transforms/GVN/commute.ll new file mode 100644 index 0000000000..cf4fb7f172 --- /dev/null +++ b/test/Transforms/GVN/commute.ll @@ -0,0 +1,23 @@ +; RUN: opt -gvn -S < %s | FileCheck %s + +declare void @use(i32, i32) + +define void @foo(i32 %x, i32 %y) { + ; CHECK: @foo + %add1 = add i32 %x, %y + %add2 = add i32 %y, %x + call void @use(i32 %add1, i32 %add2) + ; CHECK: @use(i32 %add1, i32 %add1) + ret void +} + +declare void @vse(i1, i1) + +define void @bar(i32 %x, i32 %y) { + ; CHECK: @bar + %cmp1 = icmp ult i32 %x, %y + %cmp2 = icmp ugt i32 %y, %x + call void @vse(i1 %cmp1, i1 %cmp2) + ; CHECK: @vse(i1 %cmp1, i1 %cmp1) + ret void +} |