Reapply 55900: We do support EH on x86-64!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55956 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 178aec0..1ecf6a9 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -261,8 +261,7 @@
   DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
 
   // Exceptions handling
-  if (!is64Bit)
-    SupportsExceptionHandling = true;
+  SupportsExceptionHandling = true;
   AbsoluteEHSectionOffsets = false;
   DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
   DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";