[clang] [AArch64] Fix D19098 fallout.

[• koriakin]

Summary

The intrinsic is now called llvm.thread.pointer, not
llvm.aarch64.thread.pointer. Also, the code handling it in CGBuiltin.cpp
is dead - it's already covered by GCCBuiltin. Remove it.

[t.p.northover]

Looks good to me. I love seeing the death of a target-specific intrinsic!

Tim.

cfe/trunk/lib/CodeGen/CGBuiltin.cpp

if (BuiltinID == AArch64::BI__builtin_arm_strex ||
     return Builder.CreateCall(F, {StoreVal, StoreAddr}, "stxr");
   }
 
   if (BuiltinID == AArch64::BI__builtin_arm_clrex) {
     Function *F = CGM.getIntrinsic(Intrinsic::aarch64_clrex);
     return Builder.CreateCall(F);
   }
 
-  if (BuiltinID == AArch64::BI__builtin_thread_pointer) {
-    Function *F = CGM.getIntrinsic(Intrinsic::aarch64_thread_pointer);
-    return Builder.CreateCall(F);
-  }
-
   // CRC32
   Intrinsic::ID CRCIntrinsicID = Intrinsic::not_intrinsic;
   switch (BuiltinID) {
   case AArch64::BI__builtin_arm_crc32b:
     CRCIntrinsicID = Intrinsic::aarch64_crc32b; break;
   case AArch64::BI__builtin_arm_crc32cb:
     CRCIntrinsicID = Intrinsic::aarch64_crc32cb; break;
   case AArch64::BI__builtin_arm_crc32h:

cfe/trunk/test/CodeGen/builtins-arm64.c

 // RUN: %clang_cc1 -triple arm64-apple-ios -emit-llvm -o - %s | opt -S -mem2reg | FileCheck %s
 
 void f0(void *a, void *b) {
   __clear_cache(a,b);
 // CHECK: call {{.*}} @__clear_cache
 }
 
 void *tp (void) {
   return __builtin_thread_pointer ();
-// CHECK: call {{.*}} @llvm.aarch64.thread.pointer()
+// CHECK: call {{.*}} @llvm.thread.pointer()
 }
 
 // CHECK: call {{.*}} @llvm.aarch64.rbit.i32(i32 %a)
 unsigned rbit(unsigned a) {
   return __builtin_arm_rbit(a);
 }
 
 // CHECK: call {{.*}} @llvm.aarch64.rbit.i64(i64 %a)