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Patch win64 ABI problem caused by a bug in LLVM for 128 bit integers

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gingerBill
2021-03-01 12:15:28 +00:00
parent ee04dde7c2
commit 302742689b
1 changed files with 6 additions and 1 deletions
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src/llvm_abi.cpp
+6 -1
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@@ -400,7 +400,12 @@ namespace lbAbi386 {
lb_is_type_kind(type, LLVMIntegerTypeKind) && lb_is_type_kind(type, LLVMIntegerTypeKind) &&
type == LLVMIntTypeInContext(c, 128)) { type == LLVMIntTypeInContext(c, 128)) {
// NOTE(bill): Because Windows AMD64 is weird // NOTE(bill): Because Windows AMD64 is weird
LLVMTypeRef cast_type = LLVMVectorType(LLVMInt64TypeInContext(c), 2); // TODO(bill): LLVM is probably bugged here and doesn't correctly generate the right code
// So even though it is "technically" wrong, no cast might be the best option
LLVMTypeRef cast_type = nullptr;
if (!is_return) {
cast_type = LLVMVectorType(LLVMInt64TypeInContext(c), 2);
}
return lb_arg_type_direct(type, cast_type, nullptr, nullptr); return lb_arg_type_direct(type, cast_type, nullptr, nullptr);
} }