gallium: add a temporary array register file

like normal temporaries, but allows to define a number of distinct
arrays, all of which make it explicit that they contain /indexable/
registers.
as a side-effect we're adding support for multi-dimensional destination
registers.
The whole thing looks like this:
DCL TEMPX[0][0..128]  # 0 array with 128 registers

ADD TEMPX[0][0], IN[0], IMM[0]
ADD TEMPX[0][1], IN[0], IMM[0]
ABS OUT[0], TEMPX[0][TEMP[0]]

1 files changed, 18 insertions, 5 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_parse.c b/src/gallium/auxiliary/tgsi/tgsi_parse.c
index ae8c868dcb..db9a342220 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_parse.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_parse.c
@@ -192,11 +192,6 @@ tgsi_parse_token(
 
          next_token( ctx, &inst->Dst[i].Register );
 
-         /*
-          * No support for indirect or multi-dimensional addressing.
-          */
-         assert( !inst->Dst[i].Register.Dimension );
-
          if( inst->Dst[i].Register.Indirect ) {
             next_token( ctx, &inst->Dst[i].Indirect );
 
@@ -206,6 +201,24 @@ tgsi_parse_token(
             assert( !inst->Dst[i].Indirect.Dimension );
             assert( !inst->Dst[i].Indirect.Indirect );
          }
+         if( inst->Dst[i].Register.Dimension ) {
+            next_token( ctx, &inst->Dst[i].Dimension );
+
+            /*
+             * No support for multi-dimensional addressing.
+             */
+            assert( !inst->Dst[i].Dimension.Dimension );
+
+            if( inst->Dst[i].Dimension.Indirect ) {
+               next_token( ctx, &inst->Dst[i].DimIndirect );
+
+               /*
+                * No support for indirect or multi-dimensional addressing.
+                */
+               assert( !inst->Dst[i].Indirect.Indirect );
+               assert( !inst->Dst[i].Indirect.Dimension );
+            }
+         }
       }
 
       assert( inst->Instruction.NumSrcRegs <= TGSI_FULL_MAX_SRC_REGISTERS );