From b8ecb673d1e6fe3dd49a653fc3d5754d34a7a44c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 14 Feb 2004 02:55:36 +0000
Subject: [PATCH] Add support for the returnaddress and frameaddress intrinsics

llvm-svn: 11433
---
 lib/Target/CBackend/Writer.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 493e7ec5fcc..74ed208f078 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -1157,6 +1157,8 @@ void CWriter::lowerIntrinsics(Module &M) {
             case Intrinsic::va_start:
             case Intrinsic::va_copy:
             case Intrinsic::va_end:
+            case Intrinsic::returnaddress:
+            case Intrinsic::frameaddress:
               // We directly implement these intrinsics
               break;
             default:
@@ -1205,6 +1207,16 @@ void CWriter::visitCallInst(CallInst &I) {
         writeOperand(I.getOperand(1));
         Out << ")";
         return;
+      case Intrinsic::returnaddress:
+        Out << "__builtin_return_address(";
+        writeOperand(I.getOperand(1));
+        Out << ")";
+        return;
+      case Intrinsic::frameaddress:
+        Out << "__builtin_frame_address(";
+        writeOperand(I.getOperand(1));
+        Out << ")";
+        return;
       }
     }
   visitCallSite(&I);