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| author |   Ryan Hill <rhill@gentoo.org> | 2011-04-13 01:06:26 +0000 |
|---|---|---|
| committer | Ryan Hill <rhill@gentoo.org> | 2011-04-13 01:06:26 +0000 |
| commit | 5ba60ac2c3854bc3b2aa405b76a77efd7afaf149 (patch) | |
| tree | 603932e0af0bbacb71e317ec4788909158ee54c7 /4.6.0 | |
| parent | Make preprocessor spec rules work again. Go back to using spec rules for _FO... (diff) | |
| download | gcc-patches-5ba60ac2c3854bc3b2aa405b76a77efd7afaf149.tar.gz gcc-patches-5ba60ac2c3854bc3b2aa405b76a77efd7afaf149.tar.bz2 gcc-patches-5ba60ac2c3854bc3b2aa405b76a77efd7afaf149.zip | |
Add patch for PR48377.
Diffstat (limited to '4.6.0')
| -rw-r--r-- | 4.6.0/gentoo/76_all_pr48377_4.6.1_O3-wrong-code.patch | 52 | ||||
| -rw-r--r-- | 4.6.0/gentoo/README.history | 1 |
2 files changed, 53 insertions, 0 deletions
diff --git a/4.6.0/gentoo/76_all_pr48377_4.6.1_O3-wrong-code.patch b/4.6.0/gentoo/76_all_pr48377_4.6.1_O3-wrong-code.patch new file mode 100644 index 0000000..dc8cf8d --- /dev/null +++ b/4.6.0/gentoo/76_all_pr48377_4.6.1_O3-wrong-code.patch @@ -0,0 +1,52 @@ +Wrong alignment with vectorization. + +http://gcc.gnu.org/PR48377 + + +--- /dev/null ++++ b/gcc/testsuite/gcc.dg/vect/pr48377.c +@@ -0,0 +1,25 @@ ++/* PR tree-optimization/48377 */ ++/* { dg-do run } */ ++ ++typedef unsigned int U __attribute__((__aligned__ (1), __may_alias__)); ++ ++__attribute__((noinline, noclone)) unsigned int ++foo (const char *s, int len) ++{ ++ const U *p = (const U *) s; ++ unsigned int f = len / sizeof (unsigned int), hash = len, i; ++ ++ for (i = 0; i < f; ++i) ++ hash += *p++; ++ return hash; ++} ++ ++char buf[64] __attribute__((aligned (32))); ++ ++int ++main (void) ++{ ++ return foo (buf + 1, 26) != 26; ++} ++ ++/* { dg-final { cleanup-tree-dump "vect" } } */ +--- a/gcc/tree-vect-data-refs.c ++++ b/gcc/tree-vect-data-refs.c +@@ -1,5 +1,5 @@ + /* Data References Analysis and Manipulation Utilities for Vectorization. +- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 ++ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + Free Software Foundation, Inc. + Contributed by Dorit Naishlos <dorit@il.ibm.com> + and Ira Rosen <irar@il.ibm.com> +@@ -1143,6 +1143,9 @@ vector_alignment_reachable_p (struct data_reference *dr) + if (ba) + is_packed = contains_packed_reference (ba); + ++ if (compare_tree_int (TYPE_SIZE (type), TYPE_ALIGN (type)) > 0) ++ is_packed = true; ++ + if (vect_print_dump_info (REPORT_DETAILS)) + fprintf (vect_dump, "Unknown misalignment, is_packed = %d",is_packed); + if (targetm.vectorize.vector_alignment_reachable (type, is_packed)) diff --git a/4.6.0/gentoo/README.history b/4.6.0/gentoo/README.history index 73a194b..67c4973 100644 --- a/4.6.0/gentoo/README.history +++ b/4.6.0/gentoo/README.history @@ -2,6 +2,7 @@ + 01_all_joined-cpp-defs.patch U 10_all_default-fortify-source.patch + 75_all_pr48335-4.6.1-ICE.patch + + 76_all_pr48377_4.6.1_O3-wrong-code.patch 1.1 2011-04-03 U 10_all_default-fortify-source.patch |