From cd30fb546e389d1fb78ce8e579b3dba3a8fdb52a Mon Sep 17 00:00:00 2001 From: Richard-Qin-X Date: Thu, 13 Aug 2026 21:11:10 +0800 Subject: [CodeGen] Match LLVM machine copy propagation --- backend/lib/Tooling/PipelineDriver.cpp | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'backend/lib/Tooling/PipelineDriver.cpp') diff --git a/backend/lib/Tooling/PipelineDriver.cpp b/backend/lib/Tooling/PipelineDriver.cpp index 9e2ba46..542e2b5 100644 --- a/backend/lib/Tooling/PipelineDriver.cpp +++ b/backend/lib/Tooling/PipelineDriver.cpp @@ -100,7 +100,9 @@ createPasses(const MachineFunction &Function, const BackendInvocation &Invocatio const riscv::RISCVSubtarget &Subtarget, MachinePassManagerOptions Options) { MachineFunctionPassManager Pipeline(Options); if (Invocation.PassPipeline.size() == 1 && Invocation.PassPipeline.front() == "default") { - auto Added = riscv::addCanonicalPipeline(Pipeline, Function, Subtarget); + auto Added = + riscv::addCanonicalPipeline(Pipeline, Function, Subtarget, + riscv::RISCVPipelineOptions{.UseTargetCopyInstructions = true}); if (!Added) return std::unexpected(Added.error()); } else { @@ -108,8 +110,14 @@ createPasses(const MachineFunction &Function, const BackendInvocation &Invocatio return makeUnexpected(ErrorCode::InvalidInvocation, "the default pipeline marker cannot be mixed with named passes"); } + const auto TargetCopyOption = std::ranges::find( + Invocation.TargetOptions, std::string_view{"mcp-use-is-copy-instr"}, &BackendOption::Name); + const bool UseTargetCopyInstructions = + TargetCopyOption != Invocation.TargetOptions.end() && TargetCopyOption->Value == "true"; for (const std::string &Name : Invocation.PassPipeline) { - auto Pass = riscv::createCanonicalPipelinePass(Name, Subtarget); + auto Pass = riscv::createCanonicalPipelinePass( + Name, Subtarget, + riscv::RISCVPipelineOptions{.UseTargetCopyInstructions = UseTargetCopyInstructions}); if (!Pass) return std::unexpected(Pass.error()); auto Added = Pipeline.addPass(std::move(*Pass)); -- cgit v1.2.3