From da8bc76b4bf7d1a7b025d6c8ef5809551467dcc7 Mon Sep 17 00:00:00 2001 From: Richard-Qin-X Date: Sun, 9 Aug 2026 13:23:48 +0800 Subject: [CodeGen] Implement RV64GC frame lowering --- backend/lib/CodeGen/RegAllocBasic.cpp | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'backend/lib/CodeGen/RegAllocBasic.cpp') diff --git a/backend/lib/CodeGen/RegAllocBasic.cpp b/backend/lib/CodeGen/RegAllocBasic.cpp index 4bb7b23..7f88f25 100644 --- a/backend/lib/CodeGen/RegAllocBasic.cpp +++ b/backend/lib/CodeGen/RegAllocBasic.cpp @@ -42,7 +42,7 @@ private: if (!Marked) return std::unexpected(Marked.error()); } - auto Candidates = regalloc_detail::allocationOrder(Function, Target, VirtualReg); + auto Candidates = regalloc_detail::allocationOrder(Function, Target, TargetInfo, VirtualReg); if (!Candidates) return std::unexpected(Candidates.error()); bool Assigned = false; @@ -105,6 +105,12 @@ Expected BasicAllocatorPass::run(MachineFunction &Function, auto Trial = regalloc_detail::cloneForAllocation(Function, Target); if (!Trial) return std::unexpected(Trial.error()); + const std::vector FunctionReserved = + regalloc_detail::functionReservedRegisters(Function, Target, *Info); + auto TrialReserved = + regalloc_detail::reserveFunctionRegisters(*Trial->ClonedFunction, FunctionReserved); + if (!TrialReserved) + return std::unexpected(TrialReserved.error()); MachineAnalysisManager TrialAnalyses; auto Registered = registerStage11MachineAnalyses(TrialAnalyses); if (!Registered) @@ -124,6 +130,10 @@ Expected BasicAllocatorPass::run(MachineFunction &Function, return std::unexpected(regalloc_detail::withPrefix( Allocated.error(), "BasicAllocator diverged after a successful transaction preflight: ")); } + auto Reserved = regalloc_detail::reserveFunctionRegisters(Function, FunctionReserved); + if (!Reserved) + return std::unexpected(Reserved.error()); + Allocated->Changed |= *Reserved; return regalloc_detail::passResult(*Allocated); } -- cgit v1.2.3