[PATCH] D11535: [AArch64] Implement __builtin_thread_pointer

[Adhemerval Zanella]

zatrazz created this revision.
zatrazz added reviewers: t.p.northover, rengolin, jmolloy.
zatrazz added a subscriber: cfe-commits.
Herald added subscribers: rengolin, aemerson.

This path add the aarch64 __builtin_thread_pointer support.  It will be
lowered to llvm.aarch64.thread.pointer.

http://reviews.llvm.org/D11535

Files:
  include/clang/Basic/BuiltinsAArch64.def
  lib/CodeGen/CGBuiltin.cpp
  test/CodeGen/builtins-arm64.c

Index: test/CodeGen/builtins-arm64.c
===================================================================
--- test/CodeGen/builtins-arm64.c
+++ test/CodeGen/builtins-arm64.c
@@ -5,6 +5,11 @@
 // CHECK: call {{.*}} @__clear_cache
 }
 
+void *tp (void) {
+  return __builtin_thread_pointer ();
+// CHECK: call {{.*}} @llvm.aarch64.thread.pointer()
+}
+
 // CHECK: call {{.*}} @llvm.aarch64.rbit.i32(i32 %a)
 unsigned rbit(unsigned a) {
   return __builtin_arm_rbit(a);
Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp
+++ lib/CodeGen/CGBuiltin.cpp
@@ -4342,6 +4342,11 @@
     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) {
Index: include/clang/Basic/BuiltinsAArch64.def
===================================================================
--- include/clang/Basic/BuiltinsAArch64.def
+++ include/clang/Basic/BuiltinsAArch64.def
@@ -60,5 +60,6 @@
 BUILTIN(__builtin_arm_wsr, "vcC*Ui", "nc")
 BUILTIN(__builtin_arm_wsr64, "vcC*LUi", "nc")
 BUILTIN(__builtin_arm_wsrp, "vcC*vC*", "nc")
+BUILTIN(__builtin_thread_pointer, "v*", "")
 
 #undef BUILTIN


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