svn merge ^/branches/released .

1 files changed, 28 insertions, 2 deletions

diff --git a/mesalib/src/mesa/program/ir_to_mesa.cpp b/mesalib/src/mesa/program/ir_to_mesa.cpp
index aa5f007e9..0255b576c 100644
--- a/mesalib/src/mesa/program/ir_to_mesa.cpp
+++ b/mesalib/src/mesa/program/ir_to_mesa.cpp
@@ -2670,6 +2670,8 @@ ir_to_mesa_visitor::copy_propagate(void)
    ir_to_mesa_instruction **acp = rzalloc_array(mem_ctx,

 						    ir_to_mesa_instruction *,

 						    this->next_temp * 4);

+   int *acp_level = rzalloc_array(mem_ctx, int, this->next_temp * 4);

+   int level = 0;

 

    foreach_iter(exec_list_iterator, iter, this->instructions) {

       ir_to_mesa_instruction *inst = (ir_to_mesa_instruction *)iter.get();

@@ -2700,6 +2702,8 @@ ir_to_mesa_visitor::copy_propagate(void)
 	       break;

 	    }

 

+	    assert(acp_level[acp_base + src_chan] <= level);

+

 	    if (!first) {

 	       first = copy_chan;

 	    } else {

@@ -2732,12 +2736,32 @@ ir_to_mesa_visitor::copy_propagate(void)
       switch (inst->op) {

       case OPCODE_BGNLOOP:

       case OPCODE_ENDLOOP:

-      case OPCODE_ELSE:

-      case OPCODE_ENDIF:

 	 /* End of a basic block, clear the ACP entirely. */

 	 memset(acp, 0, sizeof(*acp) * this->next_temp * 4);

 	 break;

 

+      case OPCODE_IF:

+	 ++level;

+	 break;

+

+      case OPCODE_ENDIF:

+      case OPCODE_ELSE:

+	 /* Clear all channels written inside the block from the ACP, but

+	  * leaving those that were not touched.

+	  */

+	 for (int r = 0; r < this->next_temp; r++) {

+	    for (int c = 0; c < 4; c++) {

+	       if (!acp[4 * r + c])

+		  continue;

+

+	       if (acp_level[4 * r + c] >= level)

+		  acp[4 * r + c] = NULL;

+	    }

+	 }

+	 if (inst->op == OPCODE_ENDIF)

+	    --level;

+	 break;

+

       default:

 	 /* Continuing the block, clear any written channels from

 	  * the ACP.

@@ -2802,11 +2826,13 @@ ir_to_mesa_visitor::copy_propagate(void)
 	 for (int i = 0; i < 4; i++) {

 	    if (inst->dst_reg.writemask & (1 << i)) {

 	       acp[4 * inst->dst_reg.index + i] = inst;

+	       acp_level[4 * inst->dst_reg.index + i] = level;

 	    }

 	 }

       }

    }

 

+   ralloc_free(acp_level);

    ralloc_free(acp);

 }