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

[hev via Phabricator via llvm-commits]

hev added a comment.

In D81919#2095516 <https://reviews.llvm.org/D81919#2095516>, @xiangzhai wrote:

> Behaviour the same as GNU toolchain:
>
>   $ objdump -r t.llvm.o 
>  
>   t.llvm.o:     file format elf64-tradlittlemips
>  
>   RELOCATION RECORDS FOR [.text]:
>   OFFSET           TYPE              VALUE 
>   000000000000000c R_MIPS_32         main
>   000000000000000c R_MIPS_NONE       *ABS*
>   000000000000000c R_MIPS_NONE       *ABS*
>  
>
>
> The same ABS value `-4`:
>
>   $ objdump -D 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
>  
>


How about?

      .text
  main:
      nop
      daddiu $t9, $ra, main

IIRC, The R_MIPS_PCLO16 means imm = (PC - label) & 65535, but here needs imm = label & 65535, that same as daddiu $t9, $ra, %lo(main). :)


Repository:
  rL LLVM

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

https://reviews.llvm.org/D81919