implement support for __builtin_eh_return_data_regno on x86-32 and x86-64.

This implements PR5034 and rdar://6836445.

llvm-svn: 82614

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index f620581cb49..8c31dcb7c66 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -900,6 +900,12 @@ public:
   virtual const char *getVAListDeclaration() const {
     return "typedef char* __builtin_va_list;";
   }
+  
+  int getEHDataRegisterNumber(unsigned RegNo) const {
+    if (RegNo == 0) return 0;
+    if (RegNo == 1) return 2;
+    return -1;
+  }
 };
 } // end anonymous namespace
 
@@ -990,6 +996,12 @@ public:
            "} __va_list_tag;"
            "typedef __va_list_tag __builtin_va_list[1];";
   }
+  
+  int getEHDataRegisterNumber(unsigned RegNo) const {
+    if (RegNo == 0) return 0;
+    if (RegNo == 1) return 1;
+    return -1;
+  }
 };
 } // end anonymous namespace