diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0259-2011-05-12-Richard-Guenther-rguenther-suse.de.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0259-2011-05-12-Richard-Guenther-rguenther-suse.de.patch | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0259-2011-05-12-Richard-Guenther-rguenther-suse.de.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0259-2011-05-12-Richard-Guenther-rguenther-suse.de.patch deleted file mode 100644 index 4754ace97..000000000 --- a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0259-2011-05-12-Richard-Guenther-rguenther-suse.de.patch +++ /dev/null @@ -1,100 +0,0 @@ -From 32e55402bb0fc442831d775a516f2def4f948f93 Mon Sep 17 00:00:00 2001 -From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> -Date: Thu, 12 May 2011 14:08:00 +0000 -Subject: [PATCH] 2011-05-12 Richard Guenther <rguenther@suse.de> - - Backport from mainline - 2011-05-02 Richard Guenther <rguenther@suse.de> - - PR tree-optimization/48822 - * tree-ssa-sccvn.c (set_ssa_val_to): Never go up the lattice. - (process_scc): Indicate which iteration we start. - - * gcc.dg/torture/pr48822.c: New testcase. - - -git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@173705 138bc75d-0d04-0410-961f-82ee72b054a4 - -index be253f4..81b52db 100644 -new file mode 100644 -index 0000000..b619f36 ---- /dev/null -+++ b/gcc/testsuite/gcc.dg/torture/pr48822.c -@@ -0,0 +1,20 @@ -+/* { dg-do compile } */ -+ -+void foo (int *, int *); -+int bar () -+{ -+ int a = 0; -+ int b = 0; -+ if (b != 0) -+ { -+ int ax = a; -+ int bx = b; -+ while (bx != 0) -+ { -+ int tem = ax % bx; -+ ax = bx; -+ bx = tem; -+ } -+ } -+ foo (&a, &b); -+} -diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c -index 9222cb5..eb88969 100644 ---- a/gcc/tree-ssa-sccvn.c -+++ b/gcc/tree-ssa-sccvn.c -@@ -2103,12 +2103,26 @@ print_scc (FILE *out, VEC (tree, heap) *scc) - static inline bool - set_ssa_val_to (tree from, tree to) - { -- tree currval; -+ tree currval = SSA_VAL (from); - -- if (from != to -- && TREE_CODE (to) == SSA_NAME -- && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (to)) -- to = from; -+ if (from != to) -+ { -+ if (currval == from) -+ { -+ if (dump_file && (dump_flags & TDF_DETAILS)) -+ { -+ fprintf (dump_file, "Not changing value number of "); -+ print_generic_expr (dump_file, from, 0); -+ fprintf (dump_file, " from VARYING to "); -+ print_generic_expr (dump_file, to, 0); -+ fprintf (dump_file, "\n"); -+ } -+ return false; -+ } -+ else if (TREE_CODE (to) == SSA_NAME -+ && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (to)) -+ to = from; -+ } - - /* The only thing we allow as value numbers are VN_TOP, ssa_names - and invariants. So assert that here. */ -@@ -2125,8 +2139,6 @@ set_ssa_val_to (tree from, tree to) - print_generic_expr (dump_file, to, 0); - } - -- currval = SSA_VAL (from); -- - if (currval != to && !operand_equal_p (currval, to, OEP_PURE_SAME)) - { - VN_INFO (from)->valnum = to; -@@ -3124,6 +3136,8 @@ process_scc (VEC (tree, heap) *scc) - { - changed = false; - iterations++; -+ if (dump_file && (dump_flags & TDF_DETAILS)) -+ fprintf (dump_file, "Starting iteration %d\n", iterations); - /* As we are value-numbering optimistically we have to - clear the expression tables and the simplified expressions - in each iteration until we converge. */ --- -1.7.0.4 - |