This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
[PATCH] - comparison generation fix for archs without cc0
- From: "Igor Shevlyakov" <igor at microunity dot com>
- To: <gcc-patches at gcc dot gnu dot org>
- Date: Thu, 23 May 2002 15:03:04 -0700
- Subject: [PATCH] - comparison generation fix for archs without cc0
- Organization: Microunity
Even if there is no patterns in .md file which use cc0 and HAVE_cc0 is
not defined, compare_from_rtx still generates comparison between cc0 and
0.
Generated insn will not be later matched to any pattern. So comparison
between op0 and op1 should be generated instead if HAVE_cc0 is not
defined.
======= ChangeLog entry =======
2002-05-23 Igor Shevlyakov <igor@microunity.com>
* expr.c (compare_from_rtx): generate comparison between op0 and
op1
rather than cc0 and 0 in a case when HAVE_cc0 is not defined.
======= patch ===============
Index: expr.c
===================================================================
RCS file: /cvsroot/gcc/gcc/gcc/expr.c,v
retrieving revision 1.452
diff -c -3 -p -r1.452 expr.c
*** expr.c 7 May 2002 05:44:26 -0000 1.452
--- expr.c 10 May 2002 18:35:45 -0000
*************** compare_from_rtx (op0, op1, code, unsign
*** 9978,9984 ****
--- 9978,9988 ----
emit_cmp_insn (op0, op1, code, size, mode, unsignedp);
+ #if HAVE_cc0
return gen_rtx_fmt_ee (code, VOIDmode, cc0_rtx, const0_rtx);
+ #else
+ return gen_rtx_fmt_ee (code, VOIDmode, op0, op1);
+ #endif
}
/* Like do_compare_and_jump but expects the values to compare as two
rtx's.