Hexagon: fix outdated hex_new_* comments

Some code comments refer to hex_new_value and hex_new_pred_value, which
have been transferred to DisasContext and, in the case of hex_new_value,
should now be accessed through get_result_gpr().

In order to fix this outdated comments and also avoid having to tweak
them whenever we make a variable name change in the future, let's
replace them with pseudocode.

Suggested-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <8e1689e28dd7b1318369b55127cf47b82ab75921.1684939078.git.quic_mathbern@quicinc.com>

target/hexagon/genptr.c

@@ -878,9 +878,9 @@ static void gen_endloop0(DisasContext *ctx)
      */
     if (!ctx->is_tight_loop) {
         /*
-         *    if (hex_gpr[HEX_REG_LC0] > 1) {
-         *        PC = hex_gpr[HEX_REG_SA0];
-         *        hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1;
+         *    if (LC0 > 1) {
+         *        PC = SA0;
+         *        LC0--;
          *    }
          */
         TCGLabel *label3 = gen_new_label();
@@ -897,9 +897,9 @@ static void gen_endloop0(DisasContext *ctx)
 static void gen_endloop1(DisasContext *ctx)
 {
     /*
-     *    if (hex_gpr[HEX_REG_LC1] > 1) {
-     *        PC = hex_gpr[HEX_REG_SA1];
-     *        hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
+     *    if (LC1 > 1) {
+     *        PC = SA1;
+     *        LC1--;
      *    }
      */
     TCGLabel *label = gen_new_label();
@@ -946,14 +946,12 @@ static void gen_endloop01(DisasContext *ctx)
     gen_set_label(label2);
 
     /*
-     *    if (hex_gpr[HEX_REG_LC0] > 1) {
-     *        PC = hex_gpr[HEX_REG_SA0];
-     *        hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1;
-     *    } else {
-     *        if (hex_gpr[HEX_REG_LC1] > 1) {
-     *            hex_next_pc = hex_gpr[HEX_REG_SA1];
-     *            hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
-     *        }
+     *    if (LC0 > 1) {
+     *        PC = SA0;
+     *        LC0--;
+     *    } else if (LC1 > 1) {
+     *        PC = SA1;
+     *        LC1--;
      *    }
      */
     tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3);

target/hexagon/translate.c

@@ -556,7 +556,7 @@ static void gen_start_packet(DisasContext *ctx)
     }
 
     /*
-     * Preload the predicated pred registers into hex_new_pred_value[pred_num]
+     * Preload the predicated pred registers into ctx->new_pred_value[pred_num]
      * Only endloop instructions conditionally write to pred registers
      */
     if (ctx->need_commit && pkt->pkt_has_endloop) {