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vkd3d-shader: Lower SUB to NEG + ADD at parse time.

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Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura
2021-08-09 21:56:19 -05:00
committed by Alexandre Julliard
parent ed7cdb3940
commit 6e3bdb17dc
4 changed files with 18 additions and 8 deletions
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20
libs/vkd3d-shader/hlsl.y
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@@ -1118,7 +1118,7 @@ static enum hlsl_ir_expr_op op_from_assignment(enum parse_assign_op op)
{
0,
HLSL_IR_BINOP_ADD,
HLSL_IR_BINOP_SUB,
0,
HLSL_IR_BINOP_MUL,
HLSL_IR_BINOP_DIV,
HLSL_IR_BINOP_MOD,
@@ -1176,12 +1176,23 @@ static struct hlsl_ir_node *add_assignment(struct hlsl_ctx *ctx, struct list *in
struct hlsl_ir_expr *copy;
DWORD writemask = 0;
if (assign_op == ASSIGN_OP_SUB)
{
struct hlsl_ir_node *args[3] = {rhs};
struct hlsl_ir_expr *expr;
if (!(expr = add_expr(ctx, instrs, HLSL_IR_UNOP_NEG, args, &rhs->loc)))
return NULL;
rhs = &expr->node;
assign_op = ASSIGN_OP_ADD;
}
if (assign_op != ASSIGN_OP_ASSIGN)
{
enum hlsl_ir_expr_op op = op_from_assignment(assign_op);
struct hlsl_ir_node *args[3] = {lhs, rhs};
struct hlsl_ir_expr *expr;
assert(op);
if (!(expr = add_expr(ctx, instrs, op, args, &rhs->loc)))
return NULL;
rhs = &expr->node;
@@ -2909,7 +2920,12 @@ add_expr:
}
| add_expr '-' mul_expr
{
$$ = add_binary_expr(ctx, $1, $3, HLSL_IR_BINOP_SUB, @2);
struct hlsl_ir_node *neg;
if (!(neg = hlsl_new_unary_expr(ctx, HLSL_IR_UNOP_NEG, node_from_list($3), @2)))
YYABORT;
list_add_tail($3, &neg->entry);
$$ = add_binary_expr(ctx, $1, $3, HLSL_IR_BINOP_ADD, @2);
}
shift_expr: