[RISCV] Fix a warning

kazutakahirata · akadutta · commit 84d60e006496 · 2025-10-14T09:49:13.000-05:00
This patch fixes:

  llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h:256:18: error:
  unused variable 'TSFlags' [-Werror,-Wunused-variable]
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
@@ -253,7 +253,7 @@ static inline unsigned getTMOpNum(const MCInstrDesc &Desc) {
 }
 
 static inline unsigned getTKOpNum(const MCInstrDesc &Desc) {
-  const uint64_t TSFlags = Desc.TSFlags;
+  [[maybe_unused]] const uint64_t TSFlags = Desc.TSFlags;
   assert(hasTWidenOp(TSFlags) && hasTKOp(TSFlags));
   return Desc.getNumOperands() - 3;
 }

Original file line number	Diff line number	Diff line change
`@@ -253,7 +253,7 @@ static inline unsigned getTMOpNum(const MCInstrDesc &Desc) {`
`253`	`253`	`}`
`254`	`254`
`255`	`255`	`static inline unsigned getTKOpNum(const MCInstrDesc &Desc) {`
`256`		`- const uint64_t TSFlags = Desc.TSFlags;`
	`256`	`+ [[maybe_unused]] const uint64_t TSFlags = Desc.TSFlags;`
`257`	`257`	`assert(hasTWidenOp(TSFlags) && hasTKOp(TSFlags));`
`258`	`258`	`return Desc.getNumOperands() - 3;`
`259`	`259`	`}`