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author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-01-15 03:35:46 +0000 |
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committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-01-15 03:35:46 +0000 |
commit | e96fec2e436003714a6bf3739d594d77701da1e5 (patch) | |
tree | 95c6bae99bcff262d0e79073cfc65f4f10f825c4 /test/Transforms/LoopVectorize/version-mem-access.ll | |
parent | 574df95d7ae58d9294662d513a66a77316329841 (diff) | |
download | llvm-e96fec2e436003714a6bf3739d594d77701da1e5.tar.gz llvm-e96fec2e436003714a6bf3739d594d77701da1e5.tar.bz2 llvm-e96fec2e436003714a6bf3739d594d77701da1e5.tar.xz |
LoopVectorize: Only strip casts from integer types when replacing symbolic
strides
Fixes PR18480.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199291 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopVectorize/version-mem-access.ll')
-rw-r--r-- | test/Transforms/LoopVectorize/version-mem-access.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/version-mem-access.ll b/test/Transforms/LoopVectorize/version-mem-access.ll index e712728111..51d20e227d 100644 --- a/test/Transforms/LoopVectorize/version-mem-access.ll +++ b/test/Transforms/LoopVectorize/version-mem-access.ll @@ -48,3 +48,40 @@ for.end.loopexit: for.end: ret void } + +; We used to crash on this function because we removed the fptosi cast when +; replacing the symbolic stride '%conv'. +; PR18480 + +; CHECK-LABEL: fn1 +; CHECK: load <2 x double> + +define void @fn1(double* noalias %x, double* noalias %c, double %a) { +entry: + %conv = fptosi double %a to i32 + %cmp8 = icmp sgt i32 %conv, 0 + br i1 %cmp8, label %for.body.preheader, label %for.end + +for.body.preheader: + br label %for.body + +for.body: + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] + %0 = trunc i64 %indvars.iv to i32 + %mul = mul nsw i32 %0, %conv + %idxprom = sext i32 %mul to i64 + %arrayidx = getelementptr inbounds double* %x, i64 %idxprom + %1 = load double* %arrayidx, align 8 + %arrayidx3 = getelementptr inbounds double* %c, i64 %indvars.iv + store double %1, double* %arrayidx3, align 8 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %conv + br i1 %exitcond, label %for.end.loopexit, label %for.body + +for.end.loopexit: + br label %for.end + +for.end: + ret void +} |