[PATCH] D81919: [MIPS64] Workaround fixup_Mips_32 for getExprOpValue

[Leslie Zhai via Phabricator via llvm-commits]

xiangzhai updated this revision to Diff 271277.
xiangzhai added a comment.

Just workaround as GNU toolchain:

  $ objdump -dr t.llvm.o 
  
  t.llvm.o:     file format elf64-tradlittlemips
  
  
  Disassembly of section .text:
  
  0000000000000000 <main>:
     0:	00000000 	nop
     4:	67f9fffc 	daddiu	t9,ra,-4
     8:	67f90000 	daddiu	t9,ra,0
  	...
  			10: R_MIPS_32	main
  			10: R_MIPS_NONE	*ABS*
  			10: R_MIPS_NONE	*ABS*

The `ExprKind` of  `main - .` is `ExprKind::Binary`, but GNU toolchain treat it as `%lo(main - .)`, because `ORI` and `DADDIU` only have the 16-bit signed immediate!

So just workaround `ExprKind::Binary` to `ExprKind::Target` for BAD relocation directive N64 testcase.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D81919/new/

https://reviews.llvm.org/D81919

Files:
  llvm/include/llvm/MC/MCContext.h
  llvm/lib/MC/MCContext.cpp
  llvm/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp
  llvm/test/MC/Mips/reloc-directive-bad-n64.s

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