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| author | Nadav Rotem <nrotem@apple.com> | 2013-01-10 17:34:39 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2013-01-10 17:34:39 +0000 |
| commit | c560bf638b74eb48347a7b945b90aa89ffcc1620 (patch) | |
| tree | e660a1a83a6f37a970eeacbf1f5e241a3fdb8a18 /test/Transforms/LoopVectorize | |
| parent | 12da505d938ecfbc49b203e454bada99eda950e3 (diff) | |
| download | external_llvm-c560bf638b74eb48347a7b945b90aa89ffcc1620.zip external_llvm-c560bf638b74eb48347a7b945b90aa89ffcc1620.tar.gz external_llvm-c560bf638b74eb48347a7b945b90aa89ffcc1620.tar.bz2 | |
LoopVectorizer: Fix a bug in the vectorization of BinaryOperators. The BinaryOperator can be folded to an Undef, and we don't want to set NSW flags to undef vals.
PR14878
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172079 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopVectorize')
| -rw-r--r-- | test/Transforms/LoopVectorize/nsw-crash.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/nsw-crash.ll b/test/Transforms/LoopVectorize/nsw-crash.ll new file mode 100644 index 0000000..e5fad14 --- /dev/null +++ b/test/Transforms/LoopVectorize/nsw-crash.ll @@ -0,0 +1,25 @@ +; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 + +target datalayout = +"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.7.0" + +define void @test() { +entry: + br i1 undef, label %while.end, label %while.body.lr.ph + +while.body.lr.ph: + br label %while.body + +while.body: + %it.sroa.0.091 = phi i32* [ undef, %while.body.lr.ph ], [ %incdec.ptr.i, %while.body ] + %incdec.ptr.i = getelementptr inbounds i32* %it.sroa.0.091, i64 1 + %inc32 = add i32 undef, 1 ; <------------- Make sure we don't set NSW flags to the undef. + %cmp.i11 = icmp eq i32* %incdec.ptr.i, undef + br i1 %cmp.i11, label %while.end, label %while.body + +while.end: + ret void +} + + |