Linux wants the FDE initial location and address range to be forced to 32-bit.
Darwin doesn't. Make this optional for platforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61484 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
index 6534f40..691c922 100644
--- a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
@@ -3119,10 +3119,12 @@
 
       Asm->EOL("FDE CIE offset");
 
-      EmitReference("eh_func_begin", EHFrameInfo.Number, true);
+      EmitReference("eh_func_begin", EHFrameInfo.Number, true, 
+                    TAI->doesRequire32BitFDEReference());
       Asm->EOL("FDE initial location");
       EmitDifference("eh_func_end", EHFrameInfo.Number,
-                     "eh_func_begin", EHFrameInfo.Number);
+                     "eh_func_begin", EHFrameInfo.Number,
+                     TAI->doesRequire32BitFDEReference());
       Asm->EOL("FDE address range");
 
       // If there is a personality and landing pads then point to the language