[PATCH v3 3/9] target/mips: Re-introduce OPC_ADDUH_QB_DSP and OPC_MUL_PH_DSP

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

There is no issue having multiple enum declarations with
the same value. As we are going to remove the OPC_MULT_G_2E
definition in few commits, restore the OPC_ADDUH_QB_DSP and
OPC_MUL_PH_DSP definitions and use them where they belong.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/mips/tcg/translate.c | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c
index 6d7e913263e..509488fdc7a 100644
--- a/target/mips/tcg/translate.c
+++ b/target/mips/tcg/translate.c
@@ -389,16 +389,14 @@ enum {
     OPC_ADDU_OB_DSP    = 0x14 | OPC_SPECIAL3,
     OPC_ABSQ_S_PH_DSP  = 0x12 | OPC_SPECIAL3,
     OPC_ABSQ_S_QH_DSP  = 0x16 | OPC_SPECIAL3,
-    /* OPC_ADDUH_QB_DSP is same as OPC_MULT_G_2E.  */
-    /* OPC_ADDUH_QB_DSP   = 0x18 | OPC_SPECIAL3,  */
+    OPC_ADDUH_QB_DSP   = 0x18 | OPC_SPECIAL3,
     OPC_CMPU_EQ_QB_DSP = 0x11 | OPC_SPECIAL3,
     OPC_CMPU_EQ_OB_DSP = 0x15 | OPC_SPECIAL3,
     /* MIPS DSP GPR-Based Shift Sub-class */
     OPC_SHLL_QB_DSP    = 0x13 | OPC_SPECIAL3,
     OPC_SHLL_OB_DSP    = 0x17 | OPC_SPECIAL3,
     /* MIPS DSP Multiply Sub-class insns */
-    /* OPC_MUL_PH_DSP is same as OPC_ADDUH_QB_DSP.  */
-    /* OPC_MUL_PH_DSP     = 0x18 | OPC_SPECIAL3,  */
+    OPC_MUL_PH_DSP     = 0x18 | OPC_SPECIAL3,
     OPC_DPA_W_PH_DSP   = 0x30 | OPC_SPECIAL3,
     OPC_DPAQ_W_QH_DSP  = 0x34 | OPC_SPECIAL3,
     /* DSP Bit/Manipulation Sub-class */
@@ -556,7 +554,6 @@ enum {
     OPC_MULQ_S_PH      = (0x1E << 6) | OPC_ADDU_QB_DSP,
 };
 
-#define OPC_ADDUH_QB_DSP OPC_MULT_G_2E
 #define MASK_ADDUH_QB(op)           (MASK_SPECIAL3(op) | (op & (0x1F << 6)))
 enum {
     /* MIPS DSP Arithmetic Sub-class */
@@ -11587,8 +11584,7 @@ static void gen_mipsdsp_arith(DisasContext *ctx, uint32_t op1, uint32_t op2,
     gen_load_gpr(v2_t, v2);
 
     switch (op1) {
-    /* OPC_MULT_G_2E is equal OPC_ADDUH_QB_DSP */
-    case OPC_MULT_G_2E:
+    case OPC_ADDUH_QB_DSP:
         check_dsp_r2(ctx);
         switch (op2) {
         case OPC_ADDUH_QB:
@@ -12271,11 +12267,7 @@ static void gen_mipsdsp_multiply(DisasContext *ctx, uint32_t op1, uint32_t op2,
     gen_load_gpr(v2_t, v2);
 
     switch (op1) {
-    /*
-     * OPC_MULT_G_2E, OPC_ADDUH_QB_DSP, OPC_MUL_PH_DSP have
-     * the same mask and op1.
-     */
-    case OPC_MULT_G_2E:
+    case OPC_MUL_PH_DSP:
         check_dsp_r2(ctx);
         switch (op2) {
         case  OPC_MUL_PH:
@@ -13811,7 +13803,7 @@ static void decode_opc_special3_legacy(CPUMIPSState *env, DisasContext *ctx)
          * OPC_MULT_G_2E, OPC_ADDUH_QB_DSP, OPC_MUL_PH_DSP have
          * the same mask and op1.
          */
-        if ((ctx->insn_flags & ASE_DSP_R2) && (op1 == OPC_MULT_G_2E)) {
+        if ((ctx->insn_flags & ASE_DSP_R2) && (op1 == OPC_MUL_PH_DSP)) {
             op2 = MASK_ADDUH_QB(ctx->opcode);
             switch (op2) {
             case OPC_ADDUH_QB:
-- 
2.45.2