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Again, better const union stuff

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This commit is contained in:
gingerBill
2025-09-24 14:27:44 +01:00
parent 43e0d6966e
commit 5d3092bf2d
2 changed files with 72 additions and 154 deletions
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34
src/llvm_abi.cpp
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@@ -522,6 +522,23 @@ namespace lbAbiAmd64Win64 {
}
};
gb_internal bool is_llvm_type_slice_like(LLVMTypeRef type) {
if (!lb_is_type_kind(type, LLVMStructTypeKind)) {
return false;
}
if (LLVMCountStructElementTypes(type) != 2) {
return false;
}
LLVMTypeRef fields[2] = {};
LLVMGetStructElementTypes(type, fields);
if (!lb_is_type_kind(fields[0], LLVMPointerTypeKind)) {
return false;
}
return lb_is_type_kind(fields[1], LLVMIntegerTypeKind) && lb_sizeof(fields[1]) == 8;
}
// NOTE(bill): I hate `namespace` in C++ but this is just because I don't want to prefix everything
namespace lbAbiAmd64SysV {
enum RegClass {
@@ -652,23 +669,6 @@ namespace lbAbiAmd64SysV {
return false;
}
gb_internal bool is_llvm_type_slice_like(LLVMTypeRef type) {
if (!lb_is_type_kind(type, LLVMStructTypeKind)) {
return false;
}
if (LLVMCountStructElementTypes(type) != 2) {
return false;
}
LLVMTypeRef fields[2] = {};
LLVMGetStructElementTypes(type, fields);
if (!lb_is_type_kind(fields[0], LLVMPointerTypeKind)) {
return false;
}
return lb_is_type_kind(fields[1], LLVMIntegerTypeKind) && lb_sizeof(fields[1]) == 8;
}
gb_internal bool is_aggregate(LLVMTypeRef type) {
LLVMTypeKind kind = LLVMGetTypeKind(type);
switch (kind) {