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llvm: emit metadata for exported global variables (#15349)

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* llvm: emit metadata for global variable

One use case is to genearte BTF information from global variable's metadata.

Signed-off-by: Tw <weii.tan>
This commit is contained in:
Tw
2023-04-20 19:12:41 +08:00
committed by GitHub
parent d80e6ca5a6
commit 31b6d14bf7
4 changed files with 39 additions and 10 deletions
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19
src/zig_llvm.cpp
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@@ -870,19 +870,18 @@ ZigLLVMDILocalVariable *ZigLLVMCreateAutoVariable(ZigLLVMDIBuilder *dbuilder,
return reinterpret_cast<ZigLLVMDILocalVariable*>(result);
}
ZigLLVMDIGlobalVariable *ZigLLVMCreateGlobalVariable(ZigLLVMDIBuilder *dbuilder,
ZigLLVMDIGlobalVariableExpression *ZigLLVMCreateGlobalVariableExpression(ZigLLVMDIBuilder *dbuilder,
ZigLLVMDIScope *scope, const char *name, const char *linkage_name, ZigLLVMDIFile *file,
unsigned line_no, ZigLLVMDIType *di_type, bool is_local_to_unit)
{
DIGlobalVariableExpression *result = reinterpret_cast<DIBuilder*>(dbuilder)->createGlobalVariableExpression(
return reinterpret_cast<ZigLLVMDIGlobalVariableExpression*>(reinterpret_cast<DIBuilder*>(dbuilder)->createGlobalVariableExpression(
reinterpret_cast<DIScope*>(scope),
name,
linkage_name,
reinterpret_cast<DIFile*>(file),
line_no,
reinterpret_cast<DIType*>(di_type),
is_local_to_unit);
return reinterpret_cast<ZigLLVMDIGlobalVariable*>(result->getVariable());
is_local_to_unit));
}
ZigLLVMDILocalVariable *ZigLLVMCreateParameterVariable(ZigLLVMDIBuilder *dbuilder,
@@ -1448,6 +1447,18 @@ void ZigLLVMTakeName(LLVMValueRef new_owner, LLVMValueRef victim) {
unwrap(new_owner)->takeName(unwrap(victim));
}
ZigLLVMDIGlobalVariable* ZigLLVMGlobalGetVariable(ZigLLVMDIGlobalVariableExpression *global_variable_expression) {
return reinterpret_cast<ZigLLVMDIGlobalVariable*>(reinterpret_cast<DIGlobalVariableExpression*>(global_variable_expression)->getVariable());
}
ZigLLVMDIGlobalExpression* ZigLLVMGlobalGetExpression(ZigLLVMDIGlobalVariableExpression *global_variable_expression) {
return reinterpret_cast<ZigLLVMDIGlobalExpression*>(reinterpret_cast<DIGlobalVariableExpression*>(global_variable_expression)->getExpression());
}
void ZigLLVMAttachMetaData(LLVMValueRef Val, ZigLLVMDIGlobalVariableExpression *global_variable_expression) {
unwrap<GlobalVariable>(Val)->addDebugInfo(reinterpret_cast<DIGlobalVariableExpression*>(global_variable_expression));
}
static_assert((Triple::ArchType)ZigLLVM_UnknownArch == Triple::UnknownArch, "");
static_assert((Triple::ArchType)ZigLLVM_arm == Triple::arm, "");
static_assert((Triple::ArchType)ZigLLVM_armeb == Triple::armeb, "");