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Diffstat (limited to 'src/mesa/shader/slang/slang_codegen.c')
-rw-r--r--src/mesa/shader/slang/slang_codegen.c66
1 files changed, 43 insertions, 23 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 55f7c0e8fc7..787bdb59c7b 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -647,7 +647,7 @@ new_break(slang_ir_node *loopNode)
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
if (n) {
- /* insert this node at head of linked list */
+ /* insert this node at head of linked list of cont/break instructions */
n->List = loopNode->List;
loopNode->List = n;
}
@@ -659,14 +659,15 @@ new_break(slang_ir_node *loopNode)
* Make new IR_BREAK_IF_TRUE.
*/
static slang_ir_node *
-new_break_if_true(slang_ir_node *loopNode, slang_ir_node *cond)
+new_break_if_true(slang_assemble_ctx *A, slang_ir_node *cond)
{
+ slang_ir_node *loopNode = A->CurLoop;
slang_ir_node *n;
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
n = new_node1(IR_BREAK_IF_TRUE, cond);
if (n) {
- /* insert this node at head of linked list */
+ /* insert this node at head of linked list of cont/break instructions */
n->List = loopNode->List;
loopNode->List = n;
}
@@ -678,14 +679,16 @@ new_break_if_true(slang_ir_node *loopNode, slang_ir_node *cond)
* Make new IR_CONT_IF_TRUE node.
*/
static slang_ir_node *
-new_cont_if_true(slang_ir_node *loopNode, slang_ir_node *cond)
+new_cont_if_true(slang_assemble_ctx *A, slang_ir_node *cond)
{
+ slang_ir_node *loopNode = A->CurLoop;
slang_ir_node *n;
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
n = new_node1(IR_CONT_IF_TRUE, cond);
if (n) {
- /* insert this node at head of linked list */
+ n->Parent = loopNode; /* pointer to containing loop */
+ /* insert this node at head of linked list of cont/break instructions */
n->List = loopNode->List;
loopNode->List = n;
}
@@ -2367,8 +2370,7 @@ _slang_loop_contains_continue(const slang_operation *oper)
{
GLuint i;
for (i = 0; i < oper->num_children; i++) {
- slang_operation *child =
- slang_oper_child((slang_operation *) oper, i);
+ const slang_operation *child = slang_oper_child_const(oper, i);
if (_slang_loop_contains_continue(child))
return GL_TRUE;
}
@@ -2399,8 +2401,7 @@ _slang_loop_contains_continue_or_break(const slang_operation *oper)
{
GLuint i;
for (i = 0; i < oper->num_children; i++) {
- slang_operation *child =
- slang_oper_child((slang_operation *) oper, i);
+ const slang_operation *child = slang_oper_child_const(oper, i);
if (_slang_loop_contains_continue_or_break(child))
return GL_TRUE;
}
@@ -2504,6 +2505,7 @@ _slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
* BREAK if !expr (child[0])
* body code (child[1])
*/
+ const slang_operation *prevLoopOper;
slang_ir_node *prevLoop, *loop, *breakIf, *body;
GLboolean isConst, constTrue;
@@ -2535,6 +2537,8 @@ _slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
/* save old, push new loop */
prevLoop = A->CurLoop;
A->CurLoop = loop;
+ prevLoopOper = A->CurLoopOper;
+ A->CurLoopOper = oper;
if (isConst && constTrue) {
/* while(nonzero constant), no conditional break */
@@ -2543,7 +2547,7 @@ _slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
else {
slang_ir_node *cond
= new_cond(new_not(_slang_gen_operation(A, &oper->children[0])));
- breakIf = new_break_if_true(A->CurLoop, cond);
+ breakIf = new_break_if_true(A, cond);
}
body = _slang_gen_operation(A, &oper->children[1]);
loop->Children[0] = new_seq(breakIf, body);
@@ -2559,6 +2563,7 @@ _slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
/* pop loop, restore prev */
A->CurLoop = prevLoop;
+ A->CurLoopOper = prevLoopOper;
return loop;
}
@@ -2744,6 +2749,7 @@ _slang_gen_do(slang_assemble_ctx * A, slang_operation *oper)
* tail code:
* BREAK if !expr (child[1])
*/
+ const slang_operation *prevLoopOper;
slang_ir_node *prevLoop, *loop;
GLboolean isConst, constTrue;
@@ -2767,6 +2773,8 @@ _slang_gen_do(slang_assemble_ctx * A, slang_operation *oper)
/* save old, push new loop */
prevLoop = A->CurLoop;
A->CurLoop = loop;
+ prevLoopOper = A->CurLoopOper;
+ A->CurLoopOper = oper;
/* loop body: */
loop->Children[0] = _slang_gen_operation(A, &oper->children[0]);
@@ -2780,13 +2788,14 @@ _slang_gen_do(slang_assemble_ctx * A, slang_operation *oper)
else {
slang_ir_node *cond
= new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
- loop->Children[1] = new_break_if_true(A->CurLoop, cond);
+ loop->Children[1] = new_break_if_true(A, cond);
}
/* XXX we should do infinite loop detection, as above */
/* pop loop, restore prev */
A->CurLoop = prevLoop;
+ A->CurLoopOper = prevLoopOper;
return loop;
}
@@ -2833,7 +2842,7 @@ _slang_can_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper)
assert(oper->num_children == 4);
- if (_slang_loop_contains_continue_or_break(oper))
+ if (_slang_loop_contains_continue_or_break(slang_oper_child_const(oper, 3)))
return GL_FALSE;
/* children[0] must be either "int i=constant" or "i=constant" */
@@ -3205,6 +3214,7 @@ _slang_gen_for(slang_assemble_ctx * A, slang_operation *oper)
* tail code:
* incr code (child[2]) // XXX continue here
*/
+ const slang_operation *prevLoopOper;
slang_ir_node *prevLoop, *loop, *cond, *breakIf, *body, *init, *incr;
init = _slang_gen_operation(A, &oper->children[0]);
loop = new_loop(NULL);
@@ -3212,9 +3222,11 @@ _slang_gen_for(slang_assemble_ctx * A, slang_operation *oper)
/* save old, push new loop */
prevLoop = A->CurLoop;
A->CurLoop = loop;
+ prevLoopOper = A->CurLoopOper;
+ A->CurLoopOper = oper;
cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
- breakIf = new_break_if_true(A->CurLoop, cond);
+ breakIf = new_break_if_true(A, cond);
body = _slang_gen_operation(A, &oper->children[3]);
incr = _slang_gen_operation(A, &oper->children[2]);
@@ -3223,6 +3235,7 @@ _slang_gen_for(slang_assemble_ctx * A, slang_operation *oper)
/* pop loop, restore prev */
A->CurLoop = prevLoop;
+ A->CurLoopOper = prevLoopOper;
return new_seq(init, loop);
}
@@ -3232,18 +3245,22 @@ _slang_gen_for(slang_assemble_ctx * A, slang_operation *oper)
static slang_ir_node *
_slang_gen_continue(slang_assemble_ctx * A, const slang_operation *oper)
{
- slang_ir_node *n, *loopNode;
+ slang_ir_node *n, *cont, *incr = NULL, *loopNode;
+
assert(oper->type == SLANG_OPER_CONTINUE);
loopNode = A->CurLoop;
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
- n = new_node0(IR_CONT);
- if (n) {
- n->Parent = loopNode;
- /* insert this node at head of linked list */
- n->List = loopNode->List;
- loopNode->List = n;
+
+ cont = new_node0(IR_CONT);
+ if (cont) {
+ cont->Parent = loopNode;
+ /* insert this node at head of linked list of cont/break instructions */
+ cont->List = loopNode->List;
+ loopNode->List = cont;
}
+
+ n = new_seq(incr, cont);
return n;
}
@@ -3315,15 +3332,17 @@ _slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper)
/* Special case: generate a conditional break */
if (!A->CurLoop) /* probably trying to unroll */
return NULL;
- ifBody = new_break_if_true(A->CurLoop, cond);
+ ifBody = new_break_if_true(A, cond);
return ifBody;
}
else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE)
- && !haveElseClause) {
+ && !haveElseClause
+ && A->CurLoopOper
+ && A->CurLoopOper->type != SLANG_OPER_FOR) {
/* Special case: generate a conditional continue */
if (!A->CurLoop) /* probably trying to unroll */
return NULL;
- ifBody = new_cont_if_true(A->CurLoop, cond);
+ ifBody = new_cont_if_true(A, cond);
return ifBody;
}
else {
@@ -5093,6 +5112,7 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
assert(A->program->Varying);
assert(A->vartable);
A->CurLoop = NULL;
+ A->CurLoopOper = NULL;
A->CurFunction = fun;
/* fold constant expressions, etc. */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 01:03:39 +0000