Fix frontend issues after PR#8280

Author: againull

clang/lib/CodeGen/CGBuiltin.cpp

@@ -22144,7 +22144,8 @@ llvm::CallInst *CodeGenFunction::EmitFPBuiltinIndirectCall(
     // Even if the current function doesn't have a clang builtin, create
     // an 'fpbuiltin-max-error' attribute for it; unless it's marked with
     // an NoBuiltin attribute.
-    if (!FD->hasAttr<NoBuiltinAttr>()) {
+    if (!FD->hasAttr<NoBuiltinAttr>() &&
+        FD->getNameInfo().getName().isIdentifier()) {
       Name = FD->getName();
       FPAccuracyIntrinsicID =
           llvm::StringSwitch<unsigned>(Name)
@@ -22155,7 +22156,11 @@ llvm::CallInst *CodeGenFunction::EmitFPBuiltinIndirectCall(
               .Case("frem", llvm::Intrinsic::fpbuiltin_frem)
               .Case("sincos", llvm::Intrinsic::fpbuiltin_sincos)
               .Case("exp10", llvm::Intrinsic::fpbuiltin_exp10)
-              .Case("rsqrt", llvm::Intrinsic::fpbuiltin_rsqrt);
+              .Case("rsqrt", llvm::Intrinsic::fpbuiltin_rsqrt)
+              .Default(0);
+      if (!FPAccuracyIntrinsicID) {
+        return nullptr;
+      }
     } else {
       return nullptr;
     }

clang/lib/CodeGen/CGCall.cpp

@@ -5620,8 +5620,9 @@ RValue CodeGenFunction::EmitCall(const CGFunctionInfo &CallInfo,
   // Emit the actual call/invoke instruction.
   llvm::CallBase *CI;
   if (!InvokeDest) {
-    if (!getLangOpts().FPAccuracyFuncMap.empty() ||
-        !getLangOpts().FPAccuracyVal.empty()) {
+    if ((!getLangOpts().FPAccuracyFuncMap.empty() ||
+         !getLangOpts().FPAccuracyVal.empty()) &&
+        isa_and_nonnull<FunctionDecl>(TargetDecl)) {
       const auto *FD = dyn_cast_if_present<FunctionDecl>(TargetDecl);
       assert(FD && "expecting a function");
       CI = EmitFPBuiltinIndirectCall(IRFuncTy, IRCallArgs, CalleePtr, FD);