From aaac0e3cbfe72217cad204d0122f2b73a602d2dd Mon Sep 17 00:00:00 2001 From: Artem Serov Date: Tue, 7 Aug 2018 00:52:22 +0100 Subject: ART: ARM64: Support DotProd SIMD idiom. Implement support for vectorization idiom which performs dot product of two vectors and adds the result to wider precision components in the accumulator. viz. DOT_PRODUCT([ a1, .. , am], [ x1, .. , xn ], [ y1, .. , yn ]) = [ a1 + sum(xi * yi), .. , am + sum(xj * yj) ], for m <= n, non-overlapping sums, for either both signed or both unsigned operands x, y. The patch shows up to 7x performance improvement on a micro benchmark on Cortex-A57. Test: 684-checker-simd-dotprod. Test: test-art-host, test-art-target. Change-Id: Ibab0d51f537fdecd1d84033197be3ebf5ec4e455 --- compiler/optimizing/graph_visualizer.cc | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'compiler/optimizing/graph_visualizer.cc') diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc index 31db8c205f..21f22af3c3 100644 --- a/compiler/optimizing/graph_visualizer.cc +++ b/compiler/optimizing/graph_visualizer.cc @@ -564,6 +564,14 @@ class HGraphVisualizerPrinter : public HGraphDelegateVisitor { StartAttributeStream("kind") << instruction->GetOpKind(); } + void VisitVecDotProd(HVecDotProd* instruction) override { + VisitVecOperation(instruction); + DataType::Type arg_type = instruction->InputAt(1)->AsVecOperation()->GetPackedType(); + StartAttributeStream("type") << (instruction->IsZeroExtending() ? + DataType::ToUnsigned(arg_type) : + DataType::ToSigned(arg_type)); + } + #if defined(ART_ENABLE_CODEGEN_arm) || defined(ART_ENABLE_CODEGEN_arm64) void VisitMultiplyAccumulate(HMultiplyAccumulate* instruction) override { StartAttributeStream("kind") << instruction->GetOpKind(); -- cgit v1.2.3