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query host features instead of only host cpu for more accurate -microarch:native

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Laytan
2025-11-11 19:14:40 +01:00
committed by Laytan Laats
parent 1cc9c1f723
commit af8853473a
1 changed files with 13 additions and 0 deletions
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13
src/llvm_backend.cpp
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@@ -66,6 +66,19 @@ gb_internal String get_final_microarchitecture() {
gb_internal String get_default_features() {
BuildContext *bc = &build_context;
if (bc->microarch == str_lit("native")) {
String features = make_string_c(LLVMGetHostCPUFeatures());
// Update the features string so LLVM uses it later.
if (bc->target_features_string.len > 0) {
bc->target_features_string = concatenate3_strings(permanent_allocator(), features, str_lit(","), bc->target_features_string);
} else {
bc->target_features_string = features;
}
return features;
}
int off = 0;
for (int i = 0; i < bc->metrics.arch; i += 1) {
off += target_microarch_counts[i];