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intel/compiler: add ability to override shader's assembly

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When dumping shader's assembly with INTEL_DEBUG=vs,tcs,...
sha1 of the resulting assembly is also printed, having environment
variable INTEL_SHADER_ASM_READ_PATH present driver will try to
load a "%sha1%.bin" file from the path and substitute current
assembly with the one from the file.

Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Danylo Piliaiev
2019-05-23 19:05:23 +03:00
committed by Matt Turner
parent 430823c96b
commit 04a9951580
4 changed files with 84 additions and 11 deletions
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29
src/intel/compiler/brw_vec4_generator.cpp
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@@ -24,6 +24,7 @@
#include "brw_cfg.h"
#include "brw_eu.h"
#include "dev/gen_debug.h"
#include "util/mesa-sha1.h"
using namespace brw;
@@ -2174,17 +2175,29 @@ generate_code(struct brw_codegen *p,
int after_size = p->next_insn_offset;
if (unlikely(debug_flag)) {
fprintf(stderr, "Native code for %s %s shader %s:\n",
nir->info.label ? nir->info.label : "unnamed",
_mesa_shader_stage_to_string(nir->info.stage), nir->info.name);
unsigned char sha1[21];
char sha1buf[41];
_mesa_sha1_compute(p->store, p->next_insn_offset, sha1);
_mesa_sha1_format(sha1buf, sha1);
fprintf(stderr, "Native code for %s %s shader %s (sha1 %s):\n",
nir->info.label ? nir->info.label : "unnamed",
_mesa_shader_stage_to_string(nir->info.stage), nir->info.name,
sha1buf);
fprintf(stderr, "%s vec4 shader: %d instructions. %d loops. %u cycles. %d:%d "
"spills:fills. Compacted %d to %d bytes (%.0f%%)\n",
stage_abbrev, before_size / 16, loop_count, cfg->cycle_count,
spill_count, fill_count, before_size, after_size,
100.0f * (before_size - after_size) / before_size);
"spills:fills. Compacted %d to %d bytes (%.0f%%)\n",
stage_abbrev, before_size / 16, loop_count, cfg->cycle_count,
spill_count, fill_count, before_size, after_size,
100.0f * (before_size - after_size) / before_size);
dump_assembly(p->store, disasm_info);
/* overriding the shader makes disasm_info invalid */
if (!brw_try_override_assembly(p, 0, sha1buf)) {
dump_assembly(p->store, disasm_info);
} else {
fprintf(stderr, "Successfully overrode shader with sha1 %s\n\n", sha1buf);
}
}
ralloc_free(disasm_info);
assert(validated);