This time introduced when -fno-delayed-branch was fixed in the back-end.
Modifying %fp before a 'restore' instruction is a no-no because it is the base
address used to reload spilled registers when the window stack is empty. It
only affects __builtin_eh_return and presumably went unnoticed.
Tested on SPARC/Solaris 8, applied on the mainline and 4.6/4.5/4.4 branches.
2011-06-05 Eric Botcazou <[email protected]>
* config/sparc/sparc.c (output_return): Fix thinko in the output of an
EH return when delayed branches are disabled.
--
Eric Botcazou
Index: config/sparc/sparc.c
===================================================================
--- config/sparc/sparc.c (revision 174637)
+++ config/sparc/sparc.c (working copy)
@@ -4752,18 +4752,20 @@ output_return (rtx insn)
machinery occupies the delay slot. */
gcc_assert (! final_sequence);
- if (! flag_delayed_branch)
- fputs ("\tadd\t%fp, %g1, %fp\n", asm_out_file);
+ if (flag_delayed_branch)
+ {
+ if (TARGET_V9)
+ fputs ("\treturn\t%i7+8\n", asm_out_file);
+ else
+ fputs ("\trestore\n\tjmp\t%o7+8\n", asm_out_file);
- if (TARGET_V9)
- fputs ("\treturn\t%i7+8\n", asm_out_file);
+ fputs ("\t add\t%sp, %g1, %sp\n", asm_out_file);
+ }
else
- fputs ("\trestore\n\tjmp\t%o7+8\n", asm_out_file);
-
- if (flag_delayed_branch)
- fputs ("\t add\t%sp, %g1, %sp\n", asm_out_file);
- else
- fputs ("\t nop\n", asm_out_file);
+ {
+ fputs ("\trestore\n\tadd\t%sp, %g1, %sp\n", asm_out_file);
+ fputs ("\tjmp\t%o7+8\n\t nop\n", asm_out_file);
+ }
}
else if (final_sequence)
{
