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| author | Roger Sayle <roger@eyesopen.com> | 2005-01-02 00:15:01 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2005-01-02 00:15:01 +0000 |
| commit | 0ca5fbc0cacad02f25e24d7736f20571554199ed (patch) | |
| tree | 7c808e0f9b99a5e60249250ee8aeb7d54e1559e0 | |
| parent | d13cebdee68c964ce7f48557b57f396b51ef5757 (diff) | |
| download | gcc-0ca5fbc0cacad02f25e24d7736f20571554199ed.zip gcc-0ca5fbc0cacad02f25e24d7736f20571554199ed.tar.gz gcc-0ca5fbc0cacad02f25e24d7736f20571554199ed.tar.bz2 | |
re PR rtl-optimization/12092 (ICE: Floating point exception)
PR rtl-optimization/12092
* loop.c (emit_prefetch_instructions): Do nothing if PREFETCH_BLOCK
is zero.
* gcc.dg/pr12092-1.c: New test case.
Co-Authored-By: Andrew Pinski <pinskia@physics.uc.edu>
Co-Authored-By: James E Wilson <wilson@specifixinc.com>
From-SVN: r92794
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/loop.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr12092-1.c | 12 |
4 files changed, 30 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 503f153..5f5d96e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,12 @@ 2005-01-01 Roger Sayle <roger@eyesopen.com> + Andrew Pinski <pinskia@physics.uc.edu> + James E. Wilson <wilson@specifixinc.com> + + PR rtl-optimization/12092 + * loop.c (emit_prefetch_instructions): Do nothing if PREFETCH_BLOCK + is zero. + +2005-01-01 Roger Sayle <roger@eyesopen.com> Olivier Hainque <hainque@act-europe.fr> * tree.c (int_fits_type_p): A narrower type always fits in a @@ -1,6 +1,7 @@ /* Perform various loop optimizations, including strength reduction. - Copyright (C) 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + Copyright (C) 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995, + 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 + Free Software Foundation, Inc. This file is part of GCC. @@ -4116,7 +4117,7 @@ emit_prefetch_instructions (struct loop *loop) struct prefetch_info info[MAX_PREFETCHES]; struct loop_ivs *ivs = LOOP_IVS (loop); - if (!HAVE_prefetch) + if (!HAVE_prefetch || PREFETCH_BLOCK == 0) return; /* Consider only loops w/o calls. When a call is done, the loop is probably diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 97400f7..7d2bcc0 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2005-01-01 Roger Sayle <roger@eyesopen.com> + Andrew Pinski <pinskia@physics.uc.edu> + + PR rtl-optimization/12092 + * gcc.dg/pr12092-1.c: New test case. + 2005-01-01 Geoffrey Keating <geoffk@geoffk.org> * g++.old-deja/g++.abi/cxa_vec.C: Add -flat_namespace on Darwin diff --git a/gcc/testsuite/gcc.dg/pr12092-1.c b/gcc/testsuite/gcc.dg/pr12092-1.c new file mode 100644 index 0000000..3b13c56 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr12092-1.c @@ -0,0 +1,12 @@ +/* PR rtl-optimization/12092 */ +/* Test case reduced by Andrew Pinski <pinskia@physics.uc.edu> */ +/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ +/* { dg-options "-O2 -mtune=i486 -march=pentium4 -fprefetch-loop-arrays" } */ + +void DecodeAC(int index,int *matrix) +{ + int *mptr; + + for(mptr=matrix+index;mptr<matrix+64;mptr++) {*mptr = 0;} +} + |