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vkd3d-shader: Fold redundant casts.

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Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2021-03-16 16:31:55 -05:00 committed by Alexandre Julliard
parent 7c2083d374
commit 79d4e62911
1 changed files with 18 additions and 1 deletions
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19
libs/vkd3d-shader/hlsl_codegen.c
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@ -53,11 +53,26 @@ static void replace_node(struct hlsl_ir_node *old, struct hlsl_ir_node *new)
hlsl_src_remove(src);
hlsl_src_from_node(src, new);
}
list_add_before(&old->entry, &new->entry);
list_remove(&old->entry);
hlsl_free_instr(old);
}
static bool fold_redundant_casts(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
if (instr->type == HLSL_IR_EXPR)
{
struct hlsl_ir_expr *expr = hlsl_ir_expr(instr);
if (expr->op == HLSL_IR_UNOP_CAST && hlsl_type_compare(expr->node.data_type, expr->operands[0].node->data_type))
{
replace_node(&expr->node, expr->operands[0].node);
return true;
}
}
return false;
}
static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_ir_constant *arg1, *arg2 = NULL, *res;
@ -116,6 +131,7 @@ static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
return false;
}
list_add_before(&expr->node.entry, &res->node.entry);
replace_node(&expr->node, &res->node);
return true;
}
@ -289,6 +305,7 @@ int hlsl_emit_dxbc(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_fun
{
list_move_head(entry_func->body, &ctx->static_initializers);
while (transform_ir(ctx, fold_redundant_casts, entry_func->body, NULL));
while (transform_ir(ctx, fold_constants, entry_func->body, NULL));
while (transform_ir(ctx, dce, entry_func->body, NULL));