[RISCV] Remove unused Opcode field from RVInst16. NFC

topperc · topperc · commit 09174c085389 · 2023-07-20T08:18:06.000-07:00
Unlike RVInst which also has an Opcode field, all of the subclasseso of RVInst16 assign Inst{1-0} directly. Reviewed By: asb, wangpc Differential Revision: https://reviews.llvm.org/D155791
diff --git a/llvm/lib/Target/RISCV/RISCVInstrFormatsC.td b/llvm/lib/Target/RISCV/RISCVInstrFormatsC.td
@@ -20,8 +20,6 @@ class RVInst16<dag outs, dag ins, string opcodestr, string argstr,
   // to build the decode table.
   field bits<16> SoftFail = 0;
   let Size = 2;
-
-  bits<2> Opcode = 0;
 }
 
 class RVInst16CR<bits<4> funct4, bits<2> opcode, dag outs, dag ins,

Original file line number	Diff line number	Diff line change
`@@ -20,8 +20,6 @@ class RVInst16<dag outs, dag ins, string opcodestr, string argstr,`
`20`	`20`	`// to build the decode table.`
`21`	`21`	`field bits<16> SoftFail = 0;`
`22`	`22`	`let Size = 2;`
`23`		`-`
`24`		`- bits<2> Opcode = 0;`
`25`	`23`	`}`
`26`	`24`
`27`	`25`	`class RVInst16CR<bits<4> funct4, bits<2> opcode, dag outs, dag ins,`