[LLVMbugs] [Bug 2946] New: CellSPU Error: unknown pseudo-op: `.cstring'

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Fri Oct 24 15:05:47 PDT 2008


           Summary: CellSPU Error: unknown pseudo-op: `.cstring'
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: bwatt at us.ibm.com
                CC: llvmbugs at cs.uiuc.edu

When using the CellSPU backend the following program generates a "Error:
unknown pseudo-op: `.cstring'" when compiling with GNU Cell SDK assembler,
spu-as. It appears the assembler directive, .cstring, is not supported. One
possible solution may be to generate ".section .rodata" instead.

Input, main.c:

char *s = "test";
int main(unsigned long long id) {
  return 0;


clang -emit-llvm main.c
llvm-as main.ll -f 
opt -std-compile-opts main.bc -o main.opt.bc -f
llc -march=cellspu main.opt.bc -f -o main.s
spu-as -g -o main.o main.s

Assembler file, main.s


        .align  3
        .global main
        .type   main, @function
        il      $3, 0
        bi      $lr
        .size   main,.-main
        .align  4
.str:                           # '.str'
        .asciz  "test"

        .global s
        .align  3
s:                              # 's'
        .long   .str

        .ident  "(llvm 2.2+) STI CBEA Cell SPU backend"

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