[LLVMdev] LLVM ERROR: expected relocatable expression

Shankar Easwaran shankare at codeaurora.org
Sun Sep 22 21:43:48 PDT 2013

Hi Eli,

Slightly changed the example :-

.section somedata
.word 100
.word 60
.word 40
.word   (.Ltmpa-.Ltmpb)-.Ltmpc

The GNU assembler properly handles the above.

$as -c x.s -o x.o
$readelf -x 4 x.o

Hex dump of section 'somedata':
  NOTE: This section has relocations against it, but these have NOT been 
applied to this dump.
   0x00000000 64003c00 28000000                   d.<.(...
^^^^ (Calculated properly too!)
With clang/llvm-mc

$ llvm-mc -filetype=obj x.s -o x.o
LLVM ERROR: expected relocatable expression

Looks like llvm-mc is more restrictive ?


Shankar Easwaran

Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation

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