move EmitEncodingByte to AsmPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
index 7e694d0..b6fb038 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
@@ -82,3 +82,47 @@
OutStreamer.EmitIntValue(Val, 1, 0/*addrspace*/);
}
+static const char *DecodeDWARFEncoding(unsigned Encoding) {
+ switch (Encoding) {
+ case dwarf::DW_EH_PE_absptr: return "absptr";
+ case dwarf::DW_EH_PE_omit: return "omit";
+ case dwarf::DW_EH_PE_pcrel: return "pcrel";
+ case dwarf::DW_EH_PE_udata4: return "udata4";
+ case dwarf::DW_EH_PE_udata8: return "udata8";
+ case dwarf::DW_EH_PE_sdata4: return "sdata4";
+ case dwarf::DW_EH_PE_sdata8: return "sdata8";
+ case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata4: return "pcrel udata4";
+ case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4: return "pcrel sdata4";
+ case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8: return "pcrel udata8";
+ case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8: return "pcrel sdata8";
+ case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata4:
+ return "indirect pcrel udata4";
+ case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata4:
+ return "indirect pcrel sdata4";
+ case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata8:
+ return "indirect pcrel udata8";
+ case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata8:
+ return "indirect pcrel sdata8";
+ }
+
+ return "<unknown encoding>";
+}
+
+
+/// EmitEncodingByte - Emit a .byte 42 directive that corresponds to an
+/// encoding. If verbose assembly output is enabled, we output comments
+/// describing the encoding. Desc is an optional string saying what the
+/// encoding is specifying (e.g. "LSDA").
+void AsmPrinter::EmitEncodingByte(unsigned Val, const char *Desc) {
+ if (isVerbose()) {
+ if (Desc != 0)
+ OutStreamer.AddComment(Twine(Desc)+" Encoding = " +
+ Twine(DecodeDWARFEncoding(Val)));
+ else
+ OutStreamer.AddComment(Twine("Encoding = ") +
+ DecodeDWARFEncoding(Val));
+ }
+
+ OutStreamer.EmitIntValue(Val, 1, 0/*addrspace*/);
+}
+