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Finalize debug info per module in parallel, and skip debug info work that was never used

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gingerBill committed 2026-10-08 01:05:24 +01:00
1 parent 35fdd3c499
commit 6cfa3dafb7
3 files changed
+62 -76
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src/llvm_backend_debug.cpp
+32 -50
View File
@@ -206,6 +206,28 @@ gb_internal LLVMMetadataRef lb_debug_basic_struct(lbModule *m, String const &nam
return LLVMDIBuilderCreateStructType(m->debug_builder, scope, cast(char const *)name.text, name.len, file, 1, size_in_bits, align_in_bits, LLVMDIFlagZero, nullptr, elements, element_count, 0, nullptr, "", 0);
}
// NOTE: only a named type can contain itself, so only it needs a placeholder for its members to refer to
gb_internal LLVMMetadataRef lb_debug_placeholder(lbModule *m, Type *type, unsigned tag, String const &name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line, u64 size_in_bits, u32 align_in_bits) {
if (type->kind != Type_Named) {
return nullptr;
}
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, tag,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
return temp_forward_decl;
}
gb_internal LLVMMetadataRef lb_debug_replace_placeholder(lbModule *m, Type *type, LLVMMetadataRef temp_forward_decl, LLVMMetadataRef final_decl) {
if (temp_forward_decl != nullptr) {
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
}
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
}
gb_internal LLVMMetadataRef lb_debug_struct(lbModule *m, Type *type, Type *bt, String name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line) {
GB_ASSERT(bt->kind == Type_Struct);
@@ -219,13 +241,7 @@ gb_internal LLVMMetadataRef lb_debug_struct(lbModule *m, Type *type, Type *bt, S
u64 size_in_bits = 8*type_size_of(bt);
u32 align_in_bits = 8*cast(u32)type_align_of(bt);
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, tag,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
LLVMMetadataRef temp_forward_decl = lb_debug_placeholder(m, type, tag, name, scope, file, line, size_in_bits, align_in_bits);
type_set_offsets(bt);
@@ -282,9 +298,7 @@ gb_internal LLVMMetadataRef lb_debug_struct(lbModule *m, Type *type, Type *bt, S
);
}
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
return lb_debug_replace_placeholder(m, type, temp_forward_decl, final_decl);
}
gb_internal LLVMMetadataRef lb_debug_slice(lbModule *m, Type *type, String name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line) {
@@ -296,13 +310,7 @@ gb_internal LLVMMetadataRef lb_debug_slice(lbModule *m, Type *type, String name,
u64 size_in_bits = 8*type_size_of(bt);
u32 align_in_bits = 8*cast(u32)type_align_of(bt);
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, DW_TAG_structure_type,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
LLVMMetadataRef temp_forward_decl = lb_debug_placeholder(m, type, DW_TAG_structure_type, name, scope, file, line, size_in_bits, align_in_bits);
unsigned element_count = 2;
LLVMMetadataRef elements[2];
@@ -342,9 +350,7 @@ gb_internal LLVMMetadataRef lb_debug_slice(lbModule *m, Type *type, String name,
"", 0
);
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
return lb_debug_replace_placeholder(m, type, temp_forward_decl, final_decl);
}
gb_internal LLVMMetadataRef lb_debug_dynamic_array(lbModule *m, Type *type, String name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line) {
@@ -357,13 +363,7 @@ gb_internal LLVMMetadataRef lb_debug_dynamic_array(lbModule *m, Type *type, Stri
u64 size_in_bits = 8*type_size_of(bt);
u32 align_in_bits = 8*cast(u32)type_align_of(bt);
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, DW_TAG_structure_type,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
LLVMMetadataRef temp_forward_decl = lb_debug_placeholder(m, type, DW_TAG_structure_type, name, scope, file, line, size_in_bits, align_in_bits);
unsigned element_count = 4;
LLVMMetadataRef elements[4];
@@ -421,9 +421,7 @@ gb_internal LLVMMetadataRef lb_debug_dynamic_array(lbModule *m, Type *type, Stri
"", 0
);
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
return lb_debug_replace_placeholder(m, type, temp_forward_decl, final_decl);
}
gb_internal LLVMMetadataRef lb_debug_fixed_capacity_dynamic_array(lbModule *m, Type *type, String name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line) {
@@ -435,13 +433,7 @@ gb_internal LLVMMetadataRef lb_debug_fixed_capacity_dynamic_array(lbModule *m, T
u64 size_in_bits = 8*type_size_of(bt);
u32 align_in_bits = 8*cast(u32)type_align_of(bt);
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, DW_TAG_structure_type,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
LLVMMetadataRef temp_forward_decl = lb_debug_placeholder(m, type, DW_TAG_structure_type, name, scope, file, line, size_in_bits, align_in_bits);
unsigned element_count = 2;
LLVMMetadataRef elements[2];
@@ -483,9 +475,7 @@ gb_internal LLVMMetadataRef lb_debug_fixed_capacity_dynamic_array(lbModule *m, T
"", 0
);
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
return lb_debug_replace_placeholder(m, type, temp_forward_decl, final_decl);
}
@@ -498,13 +488,7 @@ gb_internal LLVMMetadataRef lb_debug_union(lbModule *m, Type *type, String name,
u64 size_in_bits = 8*type_size_of(bt);
u32 align_in_bits = 8*cast(u32)type_align_of(bt);
LLVMMetadataRef temp_forward_decl = LLVMDIBuilderCreateReplaceableCompositeType(
m->debug_builder, DW_TAG_union_type,
cast(char const *)name.text, cast(size_t)name.len,
scope, file, line, 0, size_in_bits, align_in_bits, LLVMDIFlagZero, "", 0
);
lb_set_llvm_metadata(m, type, temp_forward_decl);
LLVMMetadataRef temp_forward_decl = lb_debug_placeholder(m, type, DW_TAG_union_type, name, scope, file, line, size_in_bits, align_in_bits);
isize index_offset = 1;
isize variant_offset = 1;
@@ -568,9 +552,7 @@ gb_internal LLVMMetadataRef lb_debug_union(lbModule *m, Type *type, String name,
"", 0
);
LLVMMetadataReplaceAllUsesWith(temp_forward_decl, final_decl);
lb_set_llvm_metadata(m, type, final_decl);
return final_decl;
return lb_debug_replace_placeholder(m, type, temp_forward_decl, final_decl);
}
gb_internal LLVMMetadataRef lb_debug_bitset(lbModule *m, Type *type, String name, LLVMMetadataRef scope, LLVMMetadataRef file, unsigned line) {