[Bug target/50091] [4.5/4.6/4.7 Regression] -fstack-check gives bad assembly on powerpc-apple-darwin9

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50091

--- Comment #8 from Iain Sandoe <iains at gcc dot gnu.org> 2011-09-03 14:17:12 UTC ---
(In reply to comment #7)
> Created attachment 25182 [details]
> Tentative fix
> 
> Untested as of this writing.

Thanks, starting bootstrap in a minute .. .

... your patch +  this (and some unrelated fixes for powerpc ADA bootstrap):

Index: gcc/config/rs6000/rs6000.c
===================================================================
@@ -19303,7 +19308,10 @@
   output_asm_insn ("{cal %0,%1(%0)|addi %0,%0,%1}", xops);

   /* Probe at TEST_ADDR and branch.  */
-  output_asm_insn ("{st|stw} 0,0(%0)", xops);
+  if (TARGET_MACHO)
+    output_asm_insn ("{st|stw} r0,0(%0)", xops);
+  else
+    output_asm_insn ("{st|stw} 0,0(%0)", xops);
   fprintf (asm_out_file, "\tb ");
   assemble_name_raw (asm_out_file, loop_lab);
   fputc ('\n', asm_out_file);