[PATCH v2 32/52] disas/riscv: Use rv_codec_illegal for pseudos

The codec is never used, since we arrive into pseudos
from a decoding of another opcode.
Assert that rv_codec_illegal is never decoded.
Use rv_codec_none for rv_op_illegal.

Reviewed-by: Alistair Francis <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
 disas/riscv.c | 68 +++++++++++++++++++++++++--------------------------
 1 file changed, 34 insertions(+), 34 deletions(-)

diff --git a/disas/riscv.c b/disas/riscv.c
index 7fa76b2d15..dedd925077 100644
--- a/disas/riscv.c
+++ b/disas/riscv.c
@@ -1599,7 +1599,7 @@ static uint32_t operand_lpl(rv_inst inst)
 /* instruction metadata */
 
 static const rv_opcode_data rvi_opcode_data[] = {
-    { "illegal", rv_codec_illegal, rv_fmt_none },
+    { "illegal", rv_codec_none, rv_fmt_none },
     { "lui", rv_codec_u, rv_fmt_rd_uimm },
     { "auipc", rv_codec_u, rv_fmt_rd_uoffset },
     { "jal", rv_codec_uj, rv_fmt_rd_offset, rvcp_jal },
@@ -1872,38 +1872,38 @@ static const rv_opcode_data rvi_opcode_data[] = {
     { "c.sq", rv_codec_cs_sq, NULL, DECOMP(rv_op_sq) },
     { "c.lqsp", rv_codec_ci_lqsp, NULL, DECOMP(rv_op_lq) },
     { "c.sqsp", rv_codec_css_sqsp, NULL, DECOMP(rv_op_sq) },
-    { "nop", rv_codec_i, rv_fmt_none },
-    { "mv", rv_codec_i, rv_fmt_rd_rs1, rvcp_mv },
-    { "not", rv_codec_i, rv_fmt_rd_rs1 },
-    { "neg", rv_codec_r, rv_fmt_rd_rs2 },
-    { "negw", rv_codec_r, rv_fmt_rd_rs2 },
-    { "sext.w", rv_codec_i, rv_fmt_rd_rs1 },
-    { "seqz", rv_codec_i, rv_fmt_rd_rs1 },
-    { "snez", rv_codec_r, rv_fmt_rd_rs2 },
-    { "sltz", rv_codec_r, rv_fmt_rd_rs1 },
-    { "sgtz", rv_codec_r, rv_fmt_rd_rs2 },
-    { "fmv.s", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fabs.s", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fneg.s", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fmv.d", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fabs.d", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fneg.d", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fmv.q", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fabs.q", rv_codec_r, rv_fmt_frd_frs1 },
-    { "fneg.q", rv_codec_r, rv_fmt_frd_frs1 },
-    { "beqz", rv_codec_sb, rv_fmt_rs1_offset },
-    { "bnez", rv_codec_sb, rv_fmt_rs1_offset },
-    { "blez", rv_codec_sb, rv_fmt_rs2_offset },
-    { "bgez", rv_codec_sb, rv_fmt_rs1_offset },
-    { "bltz", rv_codec_sb, rv_fmt_rs1_offset },
-    { "bgtz", rv_codec_sb, rv_fmt_rs2_offset },
-    { "jal", rv_codec_none, rv_fmt_offset }, /* rv_op_jal_ra */
-    { "jalr", rv_codec_none, rv_fmt_rs1 }, /* rv_op_jalr_ra */
+    { "nop", rv_codec_illegal, rv_fmt_none },
+    { "mv", rv_codec_illegal, rv_fmt_rd_rs1, rvcp_mv },
+    { "not", rv_codec_illegal, rv_fmt_rd_rs1 },
+    { "neg", rv_codec_illegal, rv_fmt_rd_rs2 },
+    { "negw", rv_codec_illegal, rv_fmt_rd_rs2 },
+    { "sext.w", rv_codec_illegal, rv_fmt_rd_rs1 },
+    { "seqz", rv_codec_illegal, rv_fmt_rd_rs1 },
+    { "snez", rv_codec_illegal, rv_fmt_rd_rs2 },
+    { "sltz", rv_codec_illegal, rv_fmt_rd_rs1 },
+    { "sgtz", rv_codec_illegal, rv_fmt_rd_rs2 },
+    { "fmv.s", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fabs.s", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fneg.s", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fmv.d", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fabs.d", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fneg.d", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fmv.q", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fabs.q", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "fneg.q", rv_codec_illegal, rv_fmt_frd_frs1 },
+    { "beqz", rv_codec_illegal, rv_fmt_rs1_offset },
+    { "bnez", rv_codec_illegal, rv_fmt_rs1_offset },
+    { "blez", rv_codec_illegal, rv_fmt_rs2_offset },
+    { "bgez", rv_codec_illegal, rv_fmt_rs1_offset },
+    { "bltz", rv_codec_illegal, rv_fmt_rs1_offset },
+    { "bgtz", rv_codec_illegal, rv_fmt_rs2_offset },
+    { "jal", rv_codec_illegal, rv_fmt_offset }, /* rv_op_jal_ra */
+    { "jalr", rv_codec_illegal, rv_fmt_rs1 }, /* rv_op_jalr_ra */
     { },
     { },
-    { "j", rv_codec_uj, rv_fmt_offset },
-    { "ret", rv_codec_i, rv_fmt_none },
-    { "jr", rv_codec_i, rv_fmt_rs1, rvcp_jr },
+    { "j", rv_codec_illegal, rv_fmt_offset },
+    { "ret", rv_codec_illegal, rv_fmt_none },
+    { "jr", rv_codec_illegal, rv_fmt_rs1, rvcp_jr },
     { "rdcycle", rv_codec_i_csr, rv_fmt_rd },
     { "rdtime", rv_codec_i_csr, rv_fmt_rd },
     { "rdinstret", rv_codec_i_csr, rv_fmt_rd },
@@ -4551,8 +4551,6 @@ static void decode_inst_operands(rv_decode *dec, rv_isa isa,
     rv_inst inst = dec->inst;
 
     switch (op->codec) {
-    case rv_codec_illegal:
-        break;
     case rv_codec_none:
         dec->rd = dec->rs1 = dec->rs2 = rv_ireg_zero;
         dec->imm = 0;
@@ -4946,7 +4944,9 @@ static void decode_inst_operands(rv_decode *dec, rv_isa isa,
         dec->rs1 = dec->rs2 = operand_crs1(inst);
         dec->imm = 0;
         break;
-    };
+    default:
+        g_assert_not_reached();
+    }
 }
 
 /* check constraint */
-- 
2.43.0