[Bug target/42542] Vectorizer produces incorrect results on max/min of unsigned intergers
------- Comment #18 from hjl at gcc dot gnu dot org 2010-01-07 19:58 -------
Subject: Bug 42542
Author: hjl
Date: Thu Jan 7 19:58:16 2010
New Revision: 155709
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155709
Log:
Properly convert GTU to GT for V4SI and V2DI
gcc/
2010-01-07 H.J. Lu <hongjiu.lu@intel.com>
Backport from mainline
2010-01-05 Paolo Bonzini <bonzinI@gnu.rg>
H.J. Lu <hongjiu.lu@intel.com>
PR target/42542
* config/i386/i386.c (ix86_expand_int_vcond): Convert GTU to GT
for V4SI and V2DI by subtracting (-(INT MAX) - 1) from both
operands to make them signed.
gcc/testsuite/
2010-01-07 H.J. Lu <hongjiu.lu@intel.com>
Backport from mainline
2010-01-05 H.J. Lu <hongjiu.lu@intel.com>
PR target/42542
* gcc.target/i386/pr42542-1.c: New.
* gcc.target/i386/pr42542-1a.c: Likewise.
* gcc.target/i386/pr42542-1b.c: Likewise.
* gcc.target/i386/pr42542-2.c: Likewise.
* gcc.target/i386/pr42542-2a.c: Likewise.
* gcc.target/i386/pr42542-2b.c: Likewise.
* gcc.target/i386/pr42542-3.c: Likewise.
* gcc.target/i386/pr42542-3a.c: Likewise.
Added:
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-1.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-1a.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-1b.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-2.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-2a.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-2b.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-3.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42542-3a.c
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/config/i386/i386.c
branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42542
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