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[Bug target/25554] [3.4/4.0/4.1/4.2 Regression] unrecognizable insn on x86_64 with -O2 -ftracer ( -fno-tree-dominator-opts on the mainline)
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Jan 2006 09:17:24 -0000
- Subject: [Bug target/25554] [3.4/4.0/4.1/4.2 Regression] unrecognizable insn on x86_64 with -O2 -ftracer ( -fno-tree-dominator-opts on the mainline)
- References: <bug-25554-10332@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from jakub at gcc dot gnu dot org 2006-01-04 09:17 -------
Subject: Bug 25554
Author: jakub
Date: Wed Jan 4 09:17:16 2006
New Revision: 109321
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109321
Log:
PR target/25554
* config/i386/i386.md (testqi_ext_3): Ensure len is positive
and pos non-negative and pos + len <= 32.
(testqi_ext_3_rex64): Ensure len is positive and pos non-negative,
drop pos + len < HOST_BITS_PER_WIDE_INT test.
(testqi_ext_3* splitter): Handle pos + len == HOST_BITS_PER_WIDE_INT.
* gcc.c-torture/compile/20051228-1.c: New test.
Added:
branches/gcc-4_1-branch/gcc/testsuite/gcc.c-torture/compile/20051228-1.c
Modified:
branches/gcc-4_1-branch/gcc/ChangeLog
branches/gcc-4_1-branch/gcc/config/i386/i386.md
branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25554