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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-10-16 17:52:40 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-10-16 17:52:40 +0000 |
| commit | fc1604ec7274e9b724ff9b2512c288a691167427 (patch) | |
| tree | 215d98a1528e2a1597363fff96aa9fbbdb91199b /test | |
| parent | 48320e0de717f2887912e70677c55f5a9618d872 (diff) | |
| download | external_llvm-fc1604ec7274e9b724ff9b2512c288a691167427.zip external_llvm-fc1604ec7274e9b724ff9b2512c288a691167427.tar.gz external_llvm-fc1604ec7274e9b724ff9b2512c288a691167427.tar.bz2 | |
SLPVectorizer: Don't vectorize volatile memory operations
radar://15231682
Reapply r192799,
http://lab.llvm.org:8011/builders/lldb-x86_64-debian-clang/builds/8226
showed that the bot is still broken even with this out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192820 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -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 0b76bec..7d682e5 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 +} + + |