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authorBrian <[email protected]>2007-03-07 12:59:01 -0700
committerBrian <[email protected]>2007-03-07 12:59:01 -0700
commit35d25c0ce4104d41feead679573543427f99a031 (patch)
tree7165ff01cef64558b5a215105756c6957aa87e07 /src/mesa/shader/slang
parent5b5a80d011d143f1bbd9be39dc4ca6a0af4bad7c (diff)
Fix problem with nested function calls such as y = f(f(x))
Replace CurFunction with curFuncEndLabel.
Diffstat (limited to 'src/mesa/shader/slang')
-rw-r--r--src/mesa/shader/slang/slang_codegen.c43
-rw-r--r--src/mesa/shader/slang/slang_emit.c4
-rw-r--r--src/mesa/shader/slang/slang_typeinfo.h2
3 files changed, 26 insertions, 23 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index d1e3544b545..fc000dbf7be 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -437,6 +437,7 @@ static slang_ir_node *
new_label(slang_label *label)
{
slang_ir_node *n = new_node0(IR_LABEL);
+ assert(label);
if (n)
n->Label = label;
return n;
@@ -474,6 +475,7 @@ static slang_ir_node *
new_jump(slang_label *dest)
{
slang_ir_node *n = new_node0(IR_JUMP);
+ assert(dest);
if (n)
n->Label = dest;
return n;
@@ -1007,7 +1009,7 @@ slang_inline_function_call(slang_assemble_ctx * A, slang_function *fun,
&inlined->children,
inlined->num_children);
lab->type = SLANG_OPER_LABEL;
- lab->label = A->CurFunction->end_label;
+ lab->label = A->curFuncEndLabel;
}
for (i = 0; i < totalArgs; i++) {
@@ -1049,16 +1051,13 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun,
{
slang_ir_node *n;
slang_operation *inlined;
- slang_function *prevFunc;
+ slang_label *prevFuncEndLabel;
+ char name[200];
- prevFunc = A->CurFunction;
- A->CurFunction = fun;
-
- if (!A->CurFunction->end_label) {
- char name[200];
- sprintf(name, "__endOfFunc_%s_", (char *) A->CurFunction->header.a_name);
- A->CurFunction->end_label = _slang_label_new(name);
- }
+ prevFuncEndLabel = A->curFuncEndLabel;
+ sprintf(name, "__endOfFunc_%s_", (char *) fun->header.a_name);
+ A->curFuncEndLabel = _slang_label_new(name);
+ assert(A->curFuncEndLabel);
if (slang_is_asm_function(fun) && !dest) {
/* assemble assembly function - tree style */
@@ -1088,9 +1087,9 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun,
n = _slang_gen_operation(A, oper);
- A->CurFunction->end_label = NULL; /* XXX delete/free? */
-
- A->CurFunction = prevFunc;
+ /*_slang_label_delete(A->curFuncEndLabel);*/
+ A->curFuncEndLabel = prevFuncEndLabel;
+ assert(A->curFuncEndLabel);
return n;
}
@@ -1712,7 +1711,8 @@ _slang_gen_return(slang_assemble_ctx * A, slang_operation *oper)
slang_operation gotoOp;
slang_operation_construct(&gotoOp);
gotoOp.type = SLANG_OPER_GOTO;
- gotoOp.label = A->CurFunction->end_label;
+ gotoOp.label = A->curFuncEndLabel;
+ assert(gotoOp.label);
/* assemble the new code */
n = _slang_gen_operation(A, &gotoOp);
@@ -1767,9 +1767,10 @@ _slang_gen_return(slang_assemble_ctx * A, slang_operation *oper)
/* child[1]: goto __endOfFunction */
jump = &block->children[1];
jump->type = SLANG_OPER_GOTO;
- assert(A->CurFunction->end_label);
+ assert(A->curFuncEndLabel);
/* XXX don't call function? */
- jump->label = A->CurFunction->end_label;
+ jump->label = A->curFuncEndLabel;
+ assert(jump->label);
#if 0 /* debug */
printf("NEW RETURN:\n");
@@ -2679,11 +2680,8 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
/* fold constant expressions, etc. */
_slang_simplify(fun->body, &A->space, A->atoms);
- A->CurFunction = fun;
-
/* Create an end-of-function label */
- if (!A->CurFunction->end_label)
- A->CurFunction->end_label = _slang_label_new("__endOfFunc__main");
+ A->curFuncEndLabel = _slang_label_new("__endOfFunc__main");
/* push new vartable scope */
_slang_push_var_table(A->vartable);
@@ -2702,9 +2700,10 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
}
/* append an end-of-function-label to IR tree */
- n = new_seq(n, new_label(fun->end_label));
+ n = new_seq(n, new_label(A->curFuncEndLabel));
- A->CurFunction = NULL;
+ /*_slang_label_delete(A->curFuncEndLabel);*/
+ A->curFuncEndLabel = NULL;
#if 0
printf("************* New AST for %s *****\n", (char*)fun->header.a_name);
diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index 9532e070f78..55338d64596 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -899,6 +899,8 @@ static struct prog_instruction *
emit_jump(slang_emit_info *emitInfo, slang_ir_node *n)
{
struct prog_instruction *inst;
+ assert(n);
+ assert(n->Label);
inst = new_instruction(emitInfo, OPCODE_BRA);
inst->DstReg.CondMask = COND_TR; /* always branch */
inst->BranchTarget = _slang_label_get_location(n->Label);
@@ -1557,6 +1559,8 @@ emit(slang_emit_info *emitInfo, slang_ir_node *n)
case IR_LABEL:
return emit_label(emitInfo, n);
case IR_JUMP:
+ assert(n);
+ assert(n->Label);
return emit_jump(emitInfo, n);
case IR_CJUMP0:
return emit_cjump(emitInfo, n, 0);
diff --git a/src/mesa/shader/slang/slang_typeinfo.h b/src/mesa/shader/slang/slang_typeinfo.h
index 62cf0009d3c..bde2e67ae23 100644
--- a/src/mesa/shader/slang/slang_typeinfo.h
+++ b/src/mesa/shader/slang/slang_typeinfo.h
@@ -62,7 +62,7 @@ typedef struct slang_assemble_ctx_
struct gl_program *program;
slang_var_table *vartable;
slang_info_log *log;
- struct slang_function_ *CurFunction;
+ struct slang_label_ *curFuncEndLabel;
struct slang_ir_node_ *CurLoop;
} slang_assemble_ctx;