tgsi: Parse and dump predicates.

src/gallium/auxiliary/tgsi/tgsi_dump.c

@@ -493,6 +493,30 @@ iter_instruction(
       TXT( "  " );
    ctx->indent += info->post_indent;
    
+   if (inst->Instruction.Predicate) {
+      CHR( '(' );
+
+      if (inst->Predicate.Negate)
+         CHR( '!' );
+
+      TXT( "PRED[" );
+      SID( inst->Predicate.Index );
+      CHR( ']' );
+
+      if (inst->Predicate.SwizzleX != TGSI_SWIZZLE_X ||
+          inst->Predicate.SwizzleY != TGSI_SWIZZLE_Y ||
+          inst->Predicate.SwizzleZ != TGSI_SWIZZLE_Z ||
+          inst->Predicate.SwizzleW != TGSI_SWIZZLE_W) {
+         CHR( '.' );
+         ENM( inst->Predicate.SwizzleX, swizzle_names );
+         ENM( inst->Predicate.SwizzleY, swizzle_names );
+         ENM( inst->Predicate.SwizzleZ, swizzle_names );
+         ENM( inst->Predicate.SwizzleW, swizzle_names );
+      }
+
+      TXT( ") " );
+   }
+
    TXT( info->mnemonic );
 
    switch (inst->Instruction.Saturate) {

src/gallium/auxiliary/tgsi/tgsi_text.c

@@ -815,6 +815,45 @@ parse_instruction(
    struct tgsi_full_instruction inst;
    uint advance;
 
+   inst = tgsi_default_full_instruction();
+
+   /* Parse predicate.
+    */
+   eat_opt_white( &ctx->cur );
+   if (*ctx->cur == '(') {
+      uint file;
+      int index;
+      uint swizzle[4];
+      boolean parsed_swizzle;
+
+      inst.Instruction.Predicate = 1;
+
+      ctx->cur++;
+      if (*ctx->cur == '!') {
+         ctx->cur++;
+         inst.Predicate.Negate = 1;
+      }
+
+      if (!parse_register_dst( ctx, &file, &index ))
+         return FALSE;
+
+      if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle )) {
+         if (parsed_swizzle) {
+            inst.Predicate.SwizzleX = swizzle[0];
+            inst.Predicate.SwizzleY = swizzle[1];
+            inst.Predicate.SwizzleZ = swizzle[2];
+            inst.Predicate.SwizzleW = swizzle[3];
+         }
+      }
+
+      if (*ctx->cur != ')') {
+         report_error( ctx, "Expected `)'" );
+         return FALSE;
+      }
+
+      ctx->cur++;
+   }
+
    /* Parse instruction name.
     */
    eat_opt_white( &ctx->cur );
@@ -848,7 +887,6 @@ parse_instruction(
       return FALSE;
    }
 
-   inst = tgsi_default_full_instruction();
    inst.Instruction.Opcode = i;
    inst.Instruction.Saturate = saturate;
    inst.Instruction.NumDstRegs = info->num_dst;