gallivm: Increase the TGSI translation limits and centralize them in a header.

2 files changed, 69 insertions, 13 deletions

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_limits.h b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
new file mode 100644
index 0000000000..e095a0abe3
--- /dev/null
+++ b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
@@ -0,0 +1,53 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ **************************************************************************/
+
+
+#ifndef LP_BLD_LIMITS_H_
+#define LP_BLD_LIMITS_H_
+
+/*
+ * TGSI translation limits.
+ *
+ * Some are slightly above SM 3.0 requirements to give some wiggle room to
+ * the state trackers.
+ */
+
+#define LP_MAX_TGSI_TEMPS 256
+
+#define LP_MAX_TGSI_ADDRS 16
+
+#define LP_MAX_TGSI_IMMEDIATES 256
+
+/**
+ * Maximum control flow nesting
+ *
+ * SM3.0 requires 24
+ */
+#define LP_MAX_TGSI_NESTING 32
+
+
+#endif /* LP_BLD_LIMITS_H_ */
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index d998386237..e699e44a24 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -54,13 +54,10 @@
 #include "lp_bld_swizzle.h"
 #include "lp_bld_flow.h"
 #include "lp_bld_tgsi.h"
+#include "lp_bld_limits.h"
 #include "lp_bld_debug.h"
 
 
-#define LP_MAX_TEMPS 256
-#define LP_MAX_IMMEDIATES 256
-
-
 #define FOR_EACH_CHANNEL( CHAN )\
    for (CHAN = 0; CHAN < NUM_CHANNELS; CHAN++)
 
@@ -84,7 +81,6 @@
 #define QUAD_BOTTOM_LEFT  2
 #define QUAD_BOTTOM_RIGHT 3
 
-#define LP_TGSI_MAX_NESTING 16
 
 struct lp_exec_mask {
    struct lp_build_context *bld;
@@ -93,19 +89,19 @@ struct lp_exec_mask {
 
    LLVMTypeRef int_vec_type;
 
-   LLVMValueRef cond_stack[LP_TGSI_MAX_NESTING];
+   LLVMValueRef cond_stack[LP_MAX_TGSI_NESTING];
    int cond_stack_size;
    LLVMValueRef cond_mask;
 
-   LLVMValueRef break_stack[LP_TGSI_MAX_NESTING];
+   LLVMValueRef break_stack[LP_MAX_TGSI_NESTING];
    int break_stack_size;
    LLVMValueRef break_mask;
 
-   LLVMValueRef cont_stack[LP_TGSI_MAX_NESTING];
+   LLVMValueRef cont_stack[LP_MAX_TGSI_NESTING];
    int cont_stack_size;
    LLVMValueRef cont_mask;
 
-   LLVMBasicBlockRef loop_stack[LP_TGSI_MAX_NESTING];
+   LLVMBasicBlockRef loop_stack[LP_MAX_TGSI_NESTING];
    int loop_stack_size;
    LLVMBasicBlockRef loop_block;
 
@@ -124,9 +120,9 @@ struct lp_build_tgsi_soa_context
 
    struct lp_build_sampler_soa *sampler;
 
-   LLVMValueRef immediates[LP_MAX_IMMEDIATES][NUM_CHANNELS];
-   LLVMValueRef temps[LP_MAX_TEMPS][NUM_CHANNELS];
-   LLVMValueRef addr[LP_MAX_TEMPS][NUM_CHANNELS];
+   LLVMValueRef immediates[LP_MAX_TGSI_IMMEDIATES][NUM_CHANNELS];
+   LLVMValueRef temps[LP_MAX_TGSI_TEMPS][NUM_CHANNELS];
+   LLVMValueRef addr[LP_MAX_TGSI_ADDRS][NUM_CHANNELS];
 
    /* we allocate an array of temps if we have indirect
     * addressing and then the temps above is unused */
@@ -198,6 +194,7 @@ static void lp_exec_mask_update(struct lp_exec_mask *mask)
 static void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
                                    LLVMValueRef val)
 {
+   assert(mask->cond_stack_size < LP_MAX_TGSI_NESTING);
    mask->cond_stack[mask->cond_stack_size++] = mask->cond_mask;
    mask->cond_mask = LLVMBuildBitCast(mask->bld->builder, val,
                                       mask->int_vec_type, "");
@@ -239,6 +236,10 @@ static void lp_exec_bgnloop(struct lp_exec_mask *mask)
    if (mask->cond_stack_size == 0)
       mask->cond_mask = LLVMConstAllOnes(mask->int_vec_type);
 
+   assert(mask->break_stack_size < LP_MAX_TGSI_NESTING);
+   assert(mask->cont_stack_size < LP_MAX_TGSI_NESTING);
+   assert(mask->break_stack_size < LP_MAX_TGSI_NESTING);
+
    mask->break_stack[mask->break_stack_size++] = mask->break_mask;
    mask->cont_stack[mask->cont_stack_size++] = mask->cont_mask;
    mask->loop_stack[mask->loop_stack_size++] = mask->loop_block;
@@ -750,6 +751,7 @@ emit_declaration(
    for (idx = first; idx <= last; ++idx) {
       switch (decl->Declaration.File) {
       case TGSI_FILE_TEMPORARY:
+         assert(idx < LP_MAX_TGSI_TEMPS);
          if (bld->has_indirect_addressing) {
             LLVMValueRef val = LLVMConstInt(LLVMInt32Type(),
                                             last*4 + 4, 0);
@@ -769,6 +771,7 @@ emit_declaration(
          break;
 
       case TGSI_FILE_ADDRESS:
+         assert(idx < LP_MAX_TGSI_ADDRS);
          for (i = 0; i < NUM_CHANNELS; i++)
             bld->addr[idx][i] = lp_build_alloca(bld->base.builder,
                                                 vec_type, "");
@@ -1783,7 +1786,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
          {
             const uint size = parse.FullToken.FullImmediate.Immediate.NrTokens - 1;
             assert(size <= 4);
-            assert(num_immediates < LP_MAX_IMMEDIATES);
+            assert(num_immediates < LP_MAX_TGSI_IMMEDIATES);
             for( i = 0; i < size; ++i )
                bld.immediates[num_immediates][i] =
                   lp_build_const_vec(type, parse.FullToken.FullImmediate.u[i].Float);