From 540c73a2f450af3d0aec6e039fab054471efdbb1 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Mon, 24 Aug 2026 16:37:25 +0800
Subject: [RISCV] Match LLVM frame lowering semantics

---
 backend/lib/Target/RISCV/RISCVPipeline.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'backend/lib/Target/RISCV/RISCVPipeline.cpp')

diff --git a/backend/lib/Target/RISCV/RISCVPipeline.cpp b/backend/lib/Target/RISCV/RISCVPipeline.cpp
index 2af1d43..cfa09d0 100644
--- a/backend/lib/Target/RISCV/RISCVPipeline.cpp
+++ b/backend/lib/Target/RISCV/RISCVPipeline.cpp
@@ -29,7 +29,9 @@ namespace rcc::riscv {
 namespace {
 
 [[nodiscard]] LibcallLoweringInfo libcallLoweringInfo(const RISCVSubtarget &Subtarget) {
-  return {Subtarget.getCallLowering(), callingConventionID(CallingConvention::LP64)};
+  const CallingConvention Convention =
+      Subtarget.targetABI() == RISCVABI::LP64D ? CallingConvention::LP64D : CallingConvention::LP64;
+  return {Subtarget.getCallLowering(), callingConventionID(Convention)};
 }
 
 template <typename PassT, typename... ArgumentT>
-- 
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