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| author | Hal Finkel <hfinkel@anl.gov> | 2012-10-30 19:47:37 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-10-30 19:47:37 +0000 |
| commit | 8a69a95f913dadae92d2ce0b3ac551610bf868e0 (patch) | |
| tree | 09ab18d5479231040fea2ddea06263ce8ce7db71 | |
| parent | b33b34a7dc447cf52702b8892c9829344e81f73a (diff) | |
| download | external_llvm-8a69a95f913dadae92d2ce0b3ac551610bf868e0.zip external_llvm-8a69a95f913dadae92d2ce0b3ac551610bf868e0.tar.gz external_llvm-8a69a95f913dadae92d2ce0b3ac551610bf868e0.tar.bz2 | |
BBVectorize: Fix a small bug introduced in r167042.
We need to make sure that we take the correct load/store alignment
when the inputs are flipped.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167044 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/Vectorize/BBVectorize.cpp | 1 | ||||
| -rw-r--r-- | test/Transforms/BBVectorize/simple-ldstr.ll | 28 |
2 files changed, 28 insertions, 1 deletions
diff --git a/lib/Transforms/Vectorize/BBVectorize.cpp b/lib/Transforms/Vectorize/BBVectorize.cpp index b29a45e..32a18f2 100644 --- a/lib/Transforms/Vectorize/BBVectorize.cpp +++ b/lib/Transforms/Vectorize/BBVectorize.cpp @@ -2472,7 +2472,6 @@ namespace { Instruction *L = I, *H = J; if (FlipMemInputs) std::swap(H, L); - FlipMemInputs = false; unsigned NumOperands = I->getNumOperands(); SmallVector<Value *, 3> ReplacedOperands(NumOperands); diff --git a/test/Transforms/BBVectorize/simple-ldstr.ll b/test/Transforms/BBVectorize/simple-ldstr.ll index c1e6a09..6883e84 100644 --- a/test/Transforms/BBVectorize/simple-ldstr.ll +++ b/test/Transforms/BBVectorize/simple-ldstr.ll @@ -140,3 +140,31 @@ if.end: ; CHECK-AO-NOT: <2 x double> } +; Simple 3-pair chain with loads and stores +define void @test5(double* %a, double* %b, double* %c) nounwind uwtable readonly { +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 + %arrayidx5 = getelementptr inbounds double* %c, i64 1 + store double %mul5, double* %arrayidx5, align 8 + store double %mul, double* %c, align 4 + ret void +; CHECK: @test5 +; CHECK: %i0.v.i0 = bitcast double* %a to <2 x double>* +; CHECK: %i1.v.i0 = bitcast double* %b to <2 x double>* +; CHECK: %i0 = load <2 x double>* %i0.v.i0, align 8 +; CHECK: %i1 = load <2 x double>* %i1.v.i0, align 8 +; CHECK: %mul = fmul <2 x double> %i0, %i1 +; CHECK: %0 = bitcast double* %c to <2 x double>* +; CHECK: store <2 x double> %mul, <2 x double>* %0, align 4 +; CHECK: ret void +; CHECK-AO: @test5 +; CHECK-AO-NOT: <2 x double> +} + |