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| author | Nick Lewycky <nicholas@mxc.ca> | 2008-07-09 05:20:13 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2008-07-09 05:20:13 +0000 |
| commit | 364661c43e6b6dbe6ca2f01b2aaa031139e02153 (patch) | |
| tree | 457b0fbcf90a296badb3cb4aaf1f2c31dabeb983 /llvm/test/Transforms | |
| parent | a660f4bb07e5a8cf446b00c498c8c4c1ec28a447 (diff) | |
| download | bcm5719-llvm-364661c43e6b6dbe6ca2f01b2aaa031139e02153.tar.gz bcm5719-llvm-364661c43e6b6dbe6ca2f01b2aaa031139e02153.zip | |
Fold ((1 << a) & 1) to (a == 0).
llvm-svn: 53276
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll b/llvm/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll new file mode 100644 index 00000000000..956b9a6ae2e --- /dev/null +++ b/llvm/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll @@ -0,0 +1,10 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {icmp ne i32 \%a} +; PR2330 + +define i1 @foo(i32 %a) nounwind { +entry: + %tmp15 = shl i32 1, %a ; <i32> [#uses=1] + %tmp237 = and i32 %tmp15, 1 ; <i32> [#uses=1] + %toBool = icmp eq i32 %tmp237, 0 ; <i1> [#uses=1] + ret i1 %toBool +} |
