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re PR rtl-optimization/32664 ([sh] ICE in create_pre_exit, at mode-switching.c:373)

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PR rtl-optimization/32664
	* mode-switching.c (create_pre_exit): Skip barrier insns.

From-SVN: r126507
This commit is contained in:
Kaz Kojima 2007-07-10 01:01:11 +00:00
parent 823c696f9b
commit 89ab46599d
2 changed files with 32 additions and 11 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-07-10 Kaz Kojima <kkojima@gcc.gnu.org>
PR rtl-optimization/32664
* mode-switching.c (create_pre_exit): Skip barrier insns.
2007-07-10 Zdenek Dvorak <dvorakz@suse.cz>
* tree-scalar-evolution.c (scev_const_prop): Add arguments to

38
gcc/mode-switching.c
View file

@ -246,21 +246,37 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes)
if (INSN_P (return_copy))
{
if (GET_CODE (PATTERN (return_copy)) == USE
&& GET_CODE (XEXP (PATTERN (return_copy), 0)) == REG
&& (FUNCTION_VALUE_REGNO_P
(REGNO (XEXP (PATTERN (return_copy), 0)))))
{
maybe_builtin_apply = 1;
last_insn = return_copy;
continue;
}
if (GET_CODE (PATTERN (return_copy)) == ASM_INPUT
&& strcmp (XSTR (PATTERN (return_copy), 0), "") == 0)
return_copy_pat = PATTERN (return_copy);
switch (GET_CODE (return_copy_pat))
{
case USE:
/* Skip __builtin_apply pattern. */
if (GET_CODE (XEXP (return_copy_pat, 0)) == REG
&& (FUNCTION_VALUE_REGNO_P
(REGNO (XEXP (return_copy_pat, 0)))))
{
maybe_builtin_apply = 1;
last_insn = return_copy;
continue;
}
break;
case ASM_OPERANDS:
/* Skip barrier insns. */
if (!MEM_VOLATILE_P (return_copy_pat))
break;
/* Fall through. */
case ASM_INPUT:
case UNSPEC_VOLATILE:
last_insn = return_copy;
continue;
default:
break;
}
/* If the return register is not (in its entirety)
likely spilled, the return copy might be
partially or completely optimized away. */