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vkd3d-shader/hlsl: Don't mark extern variables with an explicit first_write or last_read.

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Fix the last few places that care.
This commit is contained in:
Elizabeth Figura
2025-02-04 20:21:00 -03:00
committed by Henri Verbeet
parent 1d74ff075e
commit 8e6ddb0c1a
Notes: Henri Verbeet 2025-02-20 16:06:52 +01:00 
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Elizabeth Figura (@zfigura)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1367
1 changed files with 7 additions and 18 deletions
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25
libs/vkd3d-shader/hlsl_codegen.c
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@ -1398,7 +1398,7 @@ static bool lower_broadcasts(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, s
/* Allocate a unique, ordered index to each instruction, which will be used for
* copy propagation and computing liveness ranges.
* Index 0 means unused; index 1 means function entry, so start at 2. */
* Index 0 means unused, so start at 1. */
static unsigned int index_instructions(struct hlsl_block *block, unsigned int index)
{
struct hlsl_ir_node *instr;
@ -2210,7 +2210,7 @@ bool hlsl_copy_propagation_execute(struct hlsl_ctx *ctx, struct hlsl_block *bloc
struct copy_propagation_state state;
bool progress;
index_instructions(block, 2);
index_instructions(block, 1);
copy_propagation_state_init(&state, ctx);
@ -4634,6 +4634,9 @@ static bool dce(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
struct hlsl_ir_store *store = hlsl_ir_store(instr);
struct hlsl_ir_var *var = store->lhs.var;
if (var->is_output_semantic)
break;
if (var->last_read < instr->index)
{
list_remove(&instr->entry);
@ -4938,20 +4941,12 @@ static void compute_liveness_recurse(struct hlsl_block *block, unsigned int loop
}
}
static void init_var_liveness(struct hlsl_ir_var *var)
{
if (var->is_uniform || var->is_input_semantic)
var->first_write = 1;
else if (var->is_output_semantic)
var->last_read = UINT_MAX;
}
static void compute_liveness(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_func)
{
struct hlsl_scope *scope;
struct hlsl_ir_var *var;
index_instructions(&entry_func->body, 2);
index_instructions(&entry_func->body, 1);
LIST_FOR_EACH_ENTRY(scope, &ctx->scopes, struct hlsl_scope, entry)
{
@ -4959,12 +4954,6 @@ static void compute_liveness(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl
var->first_write = var->last_read = 0;
}
LIST_FOR_EACH_ENTRY(var, &ctx->extern_vars, struct hlsl_ir_var, extern_entry)
init_var_liveness(var);
LIST_FOR_EACH_ENTRY(var, &entry_func->extern_vars, struct hlsl_ir_var, extern_entry)
init_var_liveness(var);
compute_liveness_recurse(&entry_func->body, 0, 0);
}
@ -5773,7 +5762,7 @@ static uint32_t allocate_temp_registers(struct hlsl_ctx *ctx, struct hlsl_ir_fun
if (var->is_output_semantic)
{
record_allocation(ctx, &allocator, 0, VKD3DSP_WRITEMASK_ALL,
var->first_write, var->last_read, 0, false);
var->first_write, UINT_MAX, 0, false);
break;
}
}