[mips] Show an error on attempt to use 64-bit PC-relative relocation
The following code requests 64-bit PC-relative relocations unsupported
by MIPS ABI. Now it triggers an assertion. It's better to show an error
message.
```
foo:
.quad bar - foo
```
llvm-svn: 350152
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
index 7e367b7..8ace289 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
@@ -239,6 +239,10 @@
if (IsPCRel) {
switch (Kind) {
+ case FK_Data_8:
+ Ctx.reportError(Fixup.getLoc(),
+ "MIPS does not support 64-bit PC-relative relocations");
+ return ELF::R_MIPS_NONE;
case Mips::fixup_Mips_Branch_PCRel:
case Mips::fixup_Mips_PC16:
return ELF::R_MIPS_PC16;