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CFI: Fix error compiling core with LLVM CFI enabled

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Fix #90546 by filtering out global value function pointer types from the
type tests, and adding the LowerTypeTests pass to the rustc LTO
optimization pipelines.
This commit is contained in:
Ramon de C Valle 2023-07-11 16:19:42 -07:00
parent 3c554f5cb4
commit f837c48f0d
14 changed files with 90 additions and 31 deletions
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11
compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
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@ -1952,3 +1952,14 @@ extern "C" int32_t LLVMRustGetElementTypeArgIndex(LLVMValueRef CallSite) {
extern "C" bool LLVMRustIsBitcode(char *ptr, size_t len) {
return identify_magic(StringRef(ptr, len)) == file_magic::bitcode;
}
extern "C" bool LLVMRustIsNonGVFunctionPointerTy(LLVMValueRef V) {
if (unwrap<Value>(V)->getType()->isPointerTy()) {
if (auto *GV = dyn_cast<GlobalValue>(unwrap<Value>(V))) {
if (GV->getValueType()->isFunctionTy())
return false;
}
return true;
}
return false;
}