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vkd3d-shader/hlsl: Lower casts to bool to comparisons.

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Signed-off-by: Giovanni Mascellani <gmascellani@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:
Giovanni Mascellani
2022-04-06 21:24:42 +02:00
committed by Alexandre Julliard
parent 8fa196cf51
commit 8c086b5c91
3 changed files with 36 additions and 8 deletions
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32
libs/vkd3d-shader/hlsl_codegen.c
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@@ -750,6 +750,37 @@ static bool lower_division(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
return true;
}
static bool lower_casts_to_bool(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_type *type = instr->data_type, *arg_type;
struct hlsl_ir_constant *zero;
struct hlsl_ir_expr *expr;
if (instr->type != HLSL_IR_EXPR)
return false;
expr = hlsl_ir_expr(instr);
if (expr->op != HLSL_OP1_CAST)
return false;
arg_type = expr->operands[0].node->data_type;
if (type->type > HLSL_CLASS_VECTOR || arg_type->type > HLSL_CLASS_VECTOR)
return false;
if (type->base_type != HLSL_TYPE_BOOL)
return false;
/* Narrowing casts should have already been lowered. */
assert(type->dimx == arg_type->dimx);
zero = hlsl_new_constant(ctx, arg_type, &instr->loc);
if (!zero)
return false;
list_add_before(&instr->entry, &zero->node.entry);
expr->op = HLSL_OP2_NEQUAL;
hlsl_src_from_node(&expr->operands[1], &zero->node);
return true;
}
static bool dce(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
switch (instr->type)
@@ -1655,6 +1686,7 @@ int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry
}
while (progress);
transform_ir(ctx, lower_narrowing_casts, body, NULL);
transform_ir(ctx, lower_casts_to_bool, body, NULL);
do
{
progress = transform_ir(ctx, hlsl_fold_constants, body, NULL);