Fix the assembler to print a better relocatable expression error
diagnostic that includes location information.
Currently if one has this assembly:
.quad (0x1234 + (4 * SOME_VALUE))
where SOME_VALUE is undefined ones gets the less than
useful error message with no location information:
% clang -c x.s
clang -cc1as: fatal error: error in backend: expected relocatable expression
With this fix one now gets a more useful error message
with location information:
% clang -c x.s
x.s:5:8: error: expected relocatable expression
.quad (0x1234 + (4 * SOME_VALUE))
^
To do this I plumbed the SMLoc through the MCObjectStreamer
EmitValue() and EmitValueImpl() interfaces so it could be used
when creating the MCFixup.
rdar://12391022
llvm-svn: 206906
diff --git a/llvm/lib/MC/MCNullStreamer.cpp b/llvm/lib/MC/MCNullStreamer.cpp
index 2747090..53f9548 100644
--- a/llvm/lib/MC/MCNullStreamer.cpp
+++ b/llvm/lib/MC/MCNullStreamer.cpp
@@ -70,7 +70,8 @@
uint64_t Size, unsigned ByteAlignment) override {}
void EmitBytes(StringRef Data) override {}
- void EmitValueImpl(const MCExpr *Value, unsigned Size) override {}
+ void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc = SMLoc()) override {}
void EmitULEB128Value(const MCExpr *Value) override {}
void EmitSLEB128Value(const MCExpr *Value) override {}
void EmitGPRel32Value(const MCExpr *Value) override {}