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re PR target/18511 (cc1plus segfaults when compiling libstdc++-v3/src/localename.cc)

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PR target/18511
	* reload1.c (emit_output_reload_insns): Check if OLD is a hard
	register before calling regno_clobbered_p.
	* reload.c: Update comment for regno_clobbered_p.

From-SVN: r92531
This commit is contained in:
Kaz Kojima 2004-12-23 04:53:48 +00:00
parent a5370cf0e6
commit 2ca396208c
3 changed files with 11 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2004-12-23 Kaz Kojima <kkojima@gcc.gnu.org>
PR target/18511
* reload1.c (emit_output_reload_insns): Check if OLD is a hard
register before calling regno_clobbered_p.
* reload.c: Update comment for regno_clobbered_p.
2004-12-22 Richard Henderson <rth@redhat.com>
* config/i386/i386.c (override_options): Respect user disable of

3
gcc/reload.c
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@ -6940,7 +6940,8 @@ find_inc_amount (rtx x, rtx inced)
}
/* Return 1 if register REGNO is the subject of a clobber in insn INSN.
If SETS is nonzero, also consider SETs. */
If SETS is nonzero, also consider SETs. REGNO must refer to a hard
register. */
int
regno_clobbered_p (unsigned int regno, rtx insn, enum machine_mode mode,

3
gcc/reload1.c
View File

@ -6705,7 +6705,8 @@ emit_output_reload_insns (struct insn_chain *chain, struct reload *rl,
|| !(set = single_set (insn))
|| rtx_equal_p (old, SET_DEST (set))
|| !reg_mentioned_p (old, SET_SRC (set))
|| !regno_clobbered_p (REGNO (old), insn, rl->mode, 0))
|| !((REGNO (old) < FIRST_PSEUDO_REGISTER)
&& regno_clobbered_p (REGNO (old), insn, rl->mode, 0)))
gen_reload (old, reloadreg, rl->opnum,
rl->when_needed);
}