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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-10-16 16:09:00 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-10-16 16:09:00 +0000 |
| commit | c4e2060ecc5b74021c5639f7e8b1a063b598feac (patch) | |
| tree | 7e72c5eae993e405c3dbe04fced441dae4df0cd2 /test/Transforms/SLPVectorizer | |
| parent | a24cd7206d08372e453438222e33d1ebf7284579 (diff) | |
| download | llvm-c4e2060ecc5b74021c5639f7e8b1a063b598feac.tar.gz llvm-c4e2060ecc5b74021c5639f7e8b1a063b598feac.tar.bz2 llvm-c4e2060ecc5b74021c5639f7e8b1a063b598feac.tar.xz | |
SLPVectorizer: Don't vectorize volatile memory operations
radar://15231682
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192799 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SLPVectorizer')
| -rw-r--r-- | test/Transforms/SLPVectorizer/X86/simplebb.ll | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/test/Transforms/SLPVectorizer/X86/simplebb.ll b/test/Transforms/SLPVectorizer/X86/simplebb.ll index 0b76bec07b..7d682e5e46 100644 --- a/test/Transforms/SLPVectorizer/X86/simplebb.ll +++ b/test/Transforms/SLPVectorizer/X86/simplebb.ll @@ -44,3 +44,46 @@ entry: store double %mul5, double* %arrayidx5, align 8 ret void } + +; Don't vectorize volatile loads. +; CHECK: test_volatile_load +; CHECK-NOT: load <2 x double> +; CHECK: store <2 x double> +; CHECK: ret +define void @test_volatile_load(double* %a, double* %b, double* %c) { +entry: + %i0 = load volatile double* %a, align 8 + %i1 = load volatile double* %b, align 8 + %mul = fmul double %i0, %i1 + %arrayidx3 = getelementptr inbounds double* %a, i64 1 + %i3 = load double* %arrayidx3, align 8 + %arrayidx4 = getelementptr inbounds double* %b, i64 1 + %i4 = load double* %arrayidx4, align 8 + %mul5 = fmul double %i3, %i4 + store double %mul, double* %c, align 8 + %arrayidx5 = getelementptr inbounds double* %c, i64 1 + store double %mul5, double* %arrayidx5, align 8 + ret void +} + +; Don't vectorize volatile stores. +; CHECK: test_volatile_store +; CHECK-NOT: store <2 x double> +; CHECK: ret +define void @test_volatile_store(double* %a, double* %b, double* %c) { +entry: + %i0 = load double* %a, align 8 + %i1 = load double* %b, align 8 + %mul = fmul double %i0, %i1 + %arrayidx3 = getelementptr inbounds double* %a, i64 1 + %i3 = load double* %arrayidx3, align 8 + %arrayidx4 = getelementptr inbounds double* %b, i64 1 + %i4 = load double* %arrayidx4, align 8 + %mul5 = fmul double %i3, %i4 + store volatile double %mul, double* %c, align 8 + %arrayidx5 = getelementptr inbounds double* %c, i64 1 + store volatile double %mul5, double* %arrayidx5, align 8 + ret void +} + + |