[DWARF] Add CIE header fields address_size and segment_size when generating dwarf-4
The DWARF-4 specification added 2 new fields in the CIE header called
address_size and segment_size.
Create these 2 new fields when generating dwarf-4 CIE entries, print out
the new fields when dumping the CIE and update tests
Differential Revision: http://reviews.llvm.org/D9558
llvm-svn: 237145
diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp
index a8cb384..890b031 100644
--- a/llvm/lib/MC/MCDwarf.cpp
+++ b/llvm/lib/MC/MCDwarf.cpp
@@ -1302,6 +1302,14 @@
}
streamer.EmitIntValue(0, 1);
+ if (CIEVersion >= 4) {
+ // Address Size
+ streamer.EmitIntValue(context.getAsmInfo()->getPointerSize(), 1);
+
+ // Segment Descriptor Size
+ streamer.EmitIntValue(0, 1);
+ }
+
// Code Alignment Factor
streamer.EmitULEB128IntValue(context.getAsmInfo()->getMinInstAlignment());