[RISCV] Make EmitToStreamer return whether Inst is compressed

[wangpc-pp]

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

[llvmbot]

@llvm/pr-subscribers-backend-risc-v

Author: Pengcheng Wang (wangpc-pp)

Changes

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

---

Full diff: https://github.com/llvm/llvm-project/pull/88120.diff

1 Files Affected:

• (modified) llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp (+3-2)

diff --git a/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp b/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
index 5bf594c0b5eae3..915fa6bdd716da 100644
--- a/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
+++ b/llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
@@ -80,7 +80,7 @@ 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);
+  bool EmitToStreamer(MCStreamer &S, const MCInst &Inst);
   bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
                                    const MachineInstr *MI);
 
@@ -180,12 +180,13 @@ 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

[topperc]

LGTM