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ac: allow to mark shader arguments as preserved

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These arguments would be used by ACO to generate a function signature
for merged shaders automatically.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24697>
This commit is contained in:
Samuel Pitoiset
2023-08-23 18:10:25 +02:00
committed by Marge Bot
parent 8ba1860fbd
commit c161337029
2 changed files with 7 additions and 0 deletions
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5
src/amd/common/ac_shader_args.c
View File

@@ -52,6 +52,11 @@ void ac_add_return(struct ac_shader_args *info, enum ac_arg_regfile regfile)
info->return_count++;
}
void ac_add_preserved(struct ac_shader_args *info, const struct ac_arg *arg)
{
info->args[arg->arg_index].preserved = true;
}
void ac_compact_ps_vgpr_args(struct ac_shader_args *info, uint32_t spi_ps_input)
{
/* LLVM optimizes away unused FS inputs and computes spi_ps_input_addr itself and then

2
src/amd/common/ac_shader_args.h
View File

@@ -49,6 +49,7 @@ struct ac_shader_args {
uint8_t size;
bool skip : 1;
bool pending_vmem : 1; /* Loaded from VMEM and needs waitcnt before use. */
bool preserved : 1;
} args[AC_MAX_ARGS];
uint16_t arg_count;
@@ -189,6 +190,7 @@ struct ac_shader_args {
void ac_add_arg(struct ac_shader_args *info, enum ac_arg_regfile regfile, unsigned registers,
enum ac_arg_type type, struct ac_arg *arg);
void ac_add_return(struct ac_shader_args *info, enum ac_arg_regfile regfile);
void ac_add_preserved(struct ac_shader_args *info, const struct ac_arg *arg);
void ac_compact_ps_vgpr_args(struct ac_shader_args *info, uint32_t spi_ps_input);
#endif