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author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-01-29 18:55:44 +0000 |
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committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-01-29 18:55:44 +0000 |
commit | fb70e11bbcbe57bb7a6295e2f3ae1a1a71af02d4 (patch) | |
tree | d2a718428b8e138aeab24b49954692fbe179ca0c | |
parent | c2d631000d6018e8cd1734544d6c9980c6da5222 (diff) | |
download | llvm-fb70e11bbcbe57bb7a6295e2f3ae1a1a71af02d4.tar.gz llvm-fb70e11bbcbe57bb7a6295e2f3ae1a1a71af02d4.tar.bz2 llvm-fb70e11bbcbe57bb7a6295e2f3ae1a1a71af02d4.tar.xz |
LoopVectorizer: Add a test case for unrolling of small loops that need a runtime
check.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200408 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | test/Transforms/LoopVectorize/X86/unroll-small-loops.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/X86/unroll-small-loops.ll b/test/Transforms/LoopVectorize/X86/unroll-small-loops.ll index ea107dc4dc..1f0944d24d 100644 --- a/test/Transforms/LoopVectorize/X86/unroll-small-loops.ll +++ b/test/Transforms/LoopVectorize/X86/unroll-small-loops.ll @@ -48,3 +48,26 @@ define i32 @bar(i32* nocapture %A, i32 %n) nounwind uwtable ssp { ._crit_edge: ; preds = %.lr.ph, %0 ret i32 undef } + +; Also unroll if we need a runtime check. +; CHECK-LABEL: runtime_chk +; CHECK: store <4 x float> +; CHECK: store <4 x float> +define void @runtime_chk(float* %A, float* %B, float %N) { +entry: + br label %for.body + +for.body: + %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] + %arrayidx = getelementptr inbounds float* %B, i64 %indvars.iv + %0 = load float* %arrayidx, align 4 + %mul = fmul float %0, %N + %arrayidx2 = getelementptr inbounds float* %A, i64 %indvars.iv + store float %mul, float* %arrayidx2, align 4 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %exitcond = icmp eq i64 %indvars.iv.next, 256 + br i1 %exitcond, label %for.end, label %for.body + +for.end: + ret void +} |