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[Bug target/14471] Workaround for errata regarding multiplication bug
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Mar 2004 00:38:34 -0000
- Subject: [Bug target/14471] Workaround for errata regarding multiplication bug
- References: <20040307221631.14471.hp@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-03-08 00:38 -------
Subject: Bug 14471
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: hp@gcc.gnu.org 2004-03-08 00:38:31
Modified files:
gcc : configure.ac
Log message:
PR target/14471
* configure.ac (Target-specific assembler checks) <cris-*-*>: New
case, checking for -no-mul-bug-abort option.
* configure, config.in: Regenerate.
* doc/invoke.texi (CRIS Options): Document -mmul-bug-workaround
and -mno-mul-bug-workaround.
* config/cris/cris.md ("smulsi3_highpart", "umulsi3_highpart")
("mulsidi3", "umulsidi3"): Prefix output template with "%!".
("umulhisi3", "umulqihi3", "mulsi3", "mulqihi3", "mulhisi3"):
Ditto. Make attribute "slottable" dependent on TARGET_MUL_BUG.
* config/cris/mulsi3.asm (__Mul) [__CRIS_arch_version >= 10]: Make
sure mulu.d is not last on cache-line.
* config/cris/cris.h (ASM_SPEC): Translate -mno-mul-bug-workaround
into -no-mul-bug-abort depending on HAVE_AS_MUL_BUG_ABORT_OPTION.
(TARGET_MASK_MUL_BUG, TARGET_MUL_BUG): New macros.
(TARGET_SWITCHES): New options -mmul-bug-workaround and
-mno-mul-bug-workaround.
(TARGET_DEFAULT): Include TARGET_MASK_MUL_BUG.
(PRINT_OPERAND_PUNCT_VALID_P): Include '!'.
* config/cris/cris.c (cris_operand_extend_operator): Clarify
relation to MULT in head comment.
(cris_op_str): Abort for MULT.
(cris_print_operand) <case '!'>: New case.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/configure.ac.diff?cvsroot=gcc&r1=2.20&r2=2.21
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14471