[clang] [TBAA] Emit int TBAA metadata on FP math libcalls (PR #96025)
Eli Friedman via cfe-commits
cfe-commits at lists.llvm.org
Mon Jun 24 10:42:58 PDT 2024
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@@ -707,7 +707,36 @@ static RValue emitLibraryCall(CodeGenFunction &CGF, const FunctionDecl *FD,
const CallExpr *E, llvm::Constant *calleeValue) {
CodeGenFunction::CGFPOptionsRAII FPOptsRAII(CGF, E);
CGCallee callee = CGCallee::forDirect(calleeValue, GlobalDecl(FD));
- return CGF.EmitCall(E->getCallee()->getType(), callee, E, ReturnValueSlot());
+ RValue Call =
+ CGF.EmitCall(E->getCallee()->getType(), callee, E, ReturnValueSlot());
+
+ // Check the supported intrinsic.
+ if (unsigned BuiltinID = FD->getBuiltinID()) {
+ auto IntrinsicID = [&]() -> unsigned {
+ switch (BuiltinID) {
+ case Builtin::BIexpf:
+ case Builtin::BI__builtin_expf:
+ case Builtin::BI__builtin_expf128:
+ return true;
+ }
+ // TODO: support more FP math libcalls
+ return false;
+ }();
+
+ const llvm::Triple &T = CGF.getTarget().getTriple();
+ // Restrict to Linux because not all targets set errno, such as MacOS.
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efriedma-quic wrote:
LangOpts.MathErrno
https://github.com/llvm/llvm-project/pull/96025
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