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| author | Richard Biener <rguenther@suse.de> | 2013-01-04 13:28:53 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-01-04 13:28:53 +0000 |
| commit | 361618ec53c981befde38b89365712c7ebe65abb (patch) | |
| tree | 961da44b194c088f5265f8dc8af40b304e171827 /gcc | |
| parent | 87eab55418a76e2912b8b2d1e1acb0f37c137017 (diff) | |
| download | gcc-361618ec53c981befde38b89365712c7ebe65abb.zip gcc-361618ec53c981befde38b89365712c7ebe65abb.tar.gz gcc-361618ec53c981befde38b89365712c7ebe65abb.tar.bz2 | |
re PR tree-optimization/55862 (ICE in compute_antic, at tree-ssa-pre.c:2495)
2013-01-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/55862
* tree-ssa-pre.c (phi_translate_1): Valueize SSA names after
translating them through PHI nodes.
* gcc.dg/torture/pr55862.c: New testcase.
From-SVN: r194906
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr55862.c | 31 | ||||
| -rw-r--r-- | gcc/tree-ssa-pre.c | 4 |
4 files changed, 46 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9a842c4..1c6e735 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-01-04 Richard Biener <rguenther@suse.de> + + PR tree-optimization/55862 + * tree-ssa-pre.c (phi_translate_1): Valueize SSA names after + translating them through PHI nodes. + 2013-01-04 Martin Jambor <mjambor@suse.cz> PR tree-optimization/55755 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c9c434b..1ce0571 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2013-01-04 Richard Biener <rguenther@suse.de> + + PR tree-optimization/55862 + * gcc.dg/torture/pr55862.c: New testcase. + 2013-01-04 Martin Jambor <mjambor@suse.cz> PR tree-optimization/55755 diff --git a/gcc/testsuite/gcc.dg/torture/pr55862.c b/gcc/testsuite/gcc.dg/torture/pr55862.c new file mode 100644 index 0000000..eb8dceb --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr55862.c @@ -0,0 +1,31 @@ +/* { dg-do compile } */
+
+int g, a, *b;
+
+void f(void)
+{
+ int *p;
+
+ if(g)
+ {
+ int **k = &p;
+
+ for(; g; p++)
+ for(a = 0; a < 1; a++)
+ {
+ int *c = p;
+label2:
+ if(a < 1)
+ *c = 0;
+ }
+
+ goto label1;
+
+ while(g++)
+ for(*b = 0; *b; b++)
+ label1:
+ ;
+ }
+
+ goto label2;
+}
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 9c72f33..ed89738 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -1729,6 +1729,10 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2, edge e = find_edge (pred, gimple_bb (def_stmt)); tree def = PHI_ARG_DEF (def_stmt, e->dest_idx); + /* Valueize it. */ + if (TREE_CODE (def) == SSA_NAME) + def = VN_INFO (def)->valnum; + /* Handle constant. */ if (is_gimple_min_invariant (def)) return get_or_alloc_expr_for_constant (def); |