[clang][IR] Overload @llvm.thread.pointer to support non-AS0 targets (#132489)

Thread-local globals live, by default, in the default globals address
space, which may not be 0, so we need to overload @llvm.thread.pointer
to support other address spaces, and use the default globals address
space in Clang.

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp
index 7979e19..73b4274 100644
--- a/llvm/lib/IR/Verifier.cpp
+++ b/llvm/lib/IR/Verifier.cpp
@@ -6553,6 +6553,14 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
           &Call);
     break;
   }
+  case Intrinsic::thread_pointer: {
+    Check(Call.getType()->getPointerAddressSpace() ==
+              DL.getDefaultGlobalsAddressSpace(),
+          "llvm.thread.pointer intrinsic return type must be for the globals "
+          "address space",
+          &Call);
+    break;
+  }
   case Intrinsic::threadlocal_address: {
     const Value &Arg0 = *Call.getArgOperand(0);
     Check(isa<GlobalValue>(Arg0),