[llvm] 8dc006e - [RISCV] Make EmitToStreamer return whether Inst is compressed

[via llvm-commits]

Author: Pengcheng Wang
Date: 2024-04-10T11:02:55+08:00
New Revision: 8dc006ea4008c1af298e56c4db6fffe2a40a2ba9

URL: https://github.com/llvm/llvm-project/commit/8dc006ea4008c1af298e56c4db6fffe2a40a2ba9
DIFF: https://github.com/llvm/llvm-project/commit/8dc006ea4008c1af298e56c4db6fffe2a40a2ba9.diff

LOG: [RISCV] Make EmitToStreamer return whether Inst is compressed

This is helpful to reduce calls of `RISCVRVC::compress` in #77337.

Reviewers: asb, lukel97, topperc

Reviewed By: topperc

Pull Request: https://github.com/llvm/llvm-project/pull/88120

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp b/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
index 5bf594c0b5eae3..9982a73ee914d9 100644
--- a/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
+++ b/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
@@ -80,7 +80,8 @@ class RISCVAsmPrinter : public AsmPrinter {
   bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
                              const char *ExtraCode, raw_ostream &OS) override;
 
-  void EmitToStreamer(MCStreamer &S, const MCInst &Inst);
+  // Returns whether Inst is compressed.
+  bool EmitToStreamer(MCStreamer &S, const MCInst &Inst);
   bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
                                    const MachineInstr *MI);
 
@@ -180,12 +181,13 @@ void RISCVAsmPrinter::LowerSTATEPOINT(MCStreamer &OutStreamer, StackMaps &SM,
   SM.recordStatepoint(*MILabel, MI);
 }
 
-void RISCVAsmPrinter::EmitToStreamer(MCStreamer &S, const MCInst &Inst) {
+bool RISCVAsmPrinter::EmitToStreamer(MCStreamer &S, const MCInst &Inst) {
   MCInst CInst;
   bool Res = RISCVRVC::compress(CInst, Inst, *STI);
   if (Res)
     ++RISCVNumInstrsCompressed;
   AsmPrinter::EmitToStreamer(*OutStreamer, Res ? CInst : Inst);
+  return Res;
 }
 
 // Simple pseudo-instructions have their lowering (with expansion to real