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| author | Nick Lewycky <nicholas@mxc.ca> | 2009-07-04 17:24:52 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2009-07-04 17:24:52 +0000 |
| commit | 9bb1405bd9cb5aa4fe7d0d32ff69121b8482db4d (patch) | |
| tree | ab55d4b63dd9da804b8b1c8cb06fcc65150dfbba /test | |
| parent | 4671040e740e359efe747bc26f6f1fbc4481f983 (diff) | |
| download | external_llvm-9bb1405bd9cb5aa4fe7d0d32ff69121b8482db4d.zip external_llvm-9bb1405bd9cb5aa4fe7d0d32ff69121b8482db4d.tar.gz external_llvm-9bb1405bd9cb5aa4fe7d0d32ff69121b8482db4d.tar.bz2 | |
When comparing constants, consider a less wide constant to be "less complex"
than a wider one, before trying to compare their contents which will crash
if their sizes are different.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Analysis/ScalarEvolution/2009-07-04-GroupConstantsWidthMismatch.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/2009-07-04-GroupConstantsWidthMismatch.ll b/test/Analysis/ScalarEvolution/2009-07-04-GroupConstantsWidthMismatch.ll new file mode 100644 index 0000000..b5d588e --- /dev/null +++ b/test/Analysis/ScalarEvolution/2009-07-04-GroupConstantsWidthMismatch.ll @@ -0,0 +1,16 @@ +; RUN: llvm-as < %s | opt -analyze -scalar-evolution +; PR4501 + +define void @test() { +entry: + %0 = load i16* undef, align 1 + %1 = lshr i16 %0, 8 + %2 = and i16 %1, 3 + %3 = zext i16 %2 to i32 + %4 = load i8* undef, align 1 + %5 = lshr i8 %4, 4 + %6 = and i8 %5, 1 + %7 = zext i8 %6 to i32 + %t1 = add i32 %3, %7 + ret void +} |