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| author | Kaz Kojima <kkojima@gcc.gnu.org> | 2007-05-08 22:22:49 +0000 |
|---|---|---|
| committer | Kaz Kojima <kkojima@gcc.gnu.org> | 2007-05-08 22:22:49 +0000 |
| commit | 10050f74a3151e7aa333bbbffb38dde95cb5e001 (patch) | |
| tree | bbacb408bfa0e6c90376ee5831eee0aa8f6664d4 | |
| parent | b4aaa77b1f090aa6377451d55f13d7467c30886f (diff) | |
| download | gcc-10050f74a3151e7aa333bbbffb38dde95cb5e001.zip gcc-10050f74a3151e7aa333bbbffb38dde95cb5e001.tar.gz gcc-10050f74a3151e7aa333bbbffb38dde95cb5e001.tar.bz2 | |
re PR rtl-optimization/28011 ([SH] g++ generates wrong code, if '-fno-exceptions' and '-O' options are specified)
PR rtl-optimization/28011
* reload.c (push_reload): Set dont_share if IN appears in OUT
also when IN is a PLUS rtx.
(reg_overlap_mentioned_for_reload_p): Return true if X and IN
are same PLUS rtx.
From-SVN: r124557
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/reload.c | 5 |
2 files changed, 11 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1a9281c..1d0e905 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2007-05-08 Kaz Kojima <kkojima@gcc.gnu.org> + + PR rtl-optimization/28011 + * reload.c (push_reload): Set dont_share if IN appears in OUT + also when IN is a PLUS rtx. + (reg_overlap_mentioned_for_reload_p): Return true if X and IN + are same PLUS rtx. + 2007-05-08 Kazu Hirata <kazu@codesourcery.com> * emit-rtl.c (unshare_all_rtl_1): Don't copy DECL_RTL. Don't diff --git a/gcc/reload.c b/gcc/reload.c index 8ed2f4b..bf220ef 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -1180,7 +1180,7 @@ push_reload (rtx in, rtx out, rtx *inloc, rtx *outloc, /* If IN appears in OUT, we can't share any input-only reload for IN. */ if (in != 0 && out != 0 && MEM_P (out) - && (REG_P (in) || MEM_P (in)) + && (REG_P (in) || MEM_P (in) || GET_CODE (in) == PLUS) && reg_overlap_mentioned_for_reload_p (in, XEXP (out, 0))) dont_share = 1; @@ -6516,7 +6516,8 @@ reg_overlap_mentioned_for_reload_p (rtx x, rtx in) if (REG_P (in)) return 0; else if (GET_CODE (in) == PLUS) - return (reg_overlap_mentioned_for_reload_p (x, XEXP (in, 0)) + return (rtx_equal_p (x, in) + || reg_overlap_mentioned_for_reload_p (x, XEXP (in, 0)) || reg_overlap_mentioned_for_reload_p (x, XEXP (in, 1))); else return (reg_overlap_mentioned_for_reload_p (XEXP (x, 0), in) || reg_overlap_mentioned_for_reload_p (XEXP (x, 1), in)); |