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caller-save.c (save_call_clobbered_regs): Do not process sibcalls.

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2007-02-15  Paolo Bonzini  <bonzini@gnu.org>

	* caller-save.c (save_call_clobbered_regs): Do not process sibcalls.

From-SVN: r121998
This commit is contained in:
Paolo Bonzini 2007-02-15 15:07:59 +00:00 committed by Paolo Bonzini
parent fc01261a60
commit ed765125f2
2 changed files with 7 additions and 6 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2007-02-15 Paolo Bonzini <bonzini@gnu.org>
* caller-save.c (save_call_clobbered_regs): Do not process sibcalls.
2007-02-15 Nick Clifton <nickc@redhat.com>
* varasm.c (default_asm_output_anchor): Prepend * to . symbol in

9
gcc/caller-save.c
View File

@ -407,7 +407,9 @@ save_call_clobbered_regs (void)
regno += insert_restore (chain, 1, regno, MOVE_MAX_WORDS, save_mode);
}
if (code == CALL_INSN && ! find_reg_note (insn, REG_NORETURN, NULL))
if (code == CALL_INSN
&& ! SIBLING_CALL_P (insn)
&& ! find_reg_note (insn, REG_NORETURN, NULL))
{
unsigned regno;
HARD_REG_SET hard_regs_to_save;
@ -450,11 +452,6 @@ save_call_clobbered_regs (void)
during the call, but the subreg that is set isn't. */
CLEAR_HARD_REG_SET (this_insn_sets);
note_stores (PATTERN (insn), mark_set_regs, &this_insn_sets);
/* Sibcalls are considered to set the return value,
compare flow.c:propagate_one_insn. */
if (SIBLING_CALL_P (insn) && current_function_return_rtx)
mark_set_regs (current_function_return_rtx, NULL_RTX,
&this_insn_sets);
/* Compute which hard regs must be saved before this call. */
AND_COMPL_HARD_REG_SET (hard_regs_to_save, call_fixed_reg_set);