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| author | Jakub Jelinek <jakub@redhat.com> | 2008-06-24 12:06:17 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2008-06-24 12:06:17 +0200 |
| commit | a80a27015e7a09109ace946db74b780532267f66 (patch) | |
| tree | 492ca505f095f3121d8bf401e35946ec7b71fd17 /gcc | |
| parent | 190a9bd7ee25cd212923a48cae0cb390a96099bb (diff) | |
| download | gcc-a80a27015e7a09109ace946db74b780532267f66.zip gcc-a80a27015e7a09109ace946db74b780532267f66.tar.gz gcc-a80a27015e7a09109ace946db74b780532267f66.tar.bz2 | |
re PR tree-optimization/36504 (ICE when building xorg-server with -O3 -fprefetch-loop-arrays)
PR tree-optimization/36504
* tree-ssa-loop-prefetch.c (gather_memory_references_ref): Skip
references without base address.
* gcc.dg/pr36504.c: New test.
From-SVN: r137061
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr36504.c | 25 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 3 |
4 files changed, 39 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9ab80e0..4a88491 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-06-24 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/36504 + * tree-ssa-loop-prefetch.c (gather_memory_references_ref): Skip + references without base address. + 2008-06-23 Uros Bizjak <ubizjak@gmail.com> PR middle-end/PR36584 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a377829..c7a7cd2 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-06-24 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/36504 + * gcc.dg/pr36504.c: New test. + 2008-06-23 Uros Bizjak <ubizjak@gmail.com> PR middle-end/PR36584 diff --git a/gcc/testsuite/gcc.dg/pr36504.c b/gcc/testsuite/gcc.dg/pr36504.c new file mode 100644 index 0000000..0db6ebc --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr36504.c @@ -0,0 +1,25 @@ +/* PR tree-optimization/36504 */ +/* { dg-do compile } */ +/* { dg-options "-O3 -fprefetch-loop-arrays" } */ + +struct A { struct { int a; } b[8]; }; +struct B { int c; int d; }; +struct C { struct B d; }; + +void bar (struct C *, int); + +struct B +foo (struct C *p, struct A *e, int b) +{ + struct B q; + bar (p, e->b[b].a); + return q; +} + +void +baz (int b, struct A *e) +{ + struct C p; + for (; b; ++b) + p.d = foo (&p, e, b); +} diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index 651ccbb..14044c4 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -457,6 +457,9 @@ gather_memory_references_ref (struct loop *loop, struct mem_ref_group **refs, HOST_WIDE_INT step, delta; struct mem_ref_group *agrp; + if (get_base_address (ref) == NULL) + return false; + if (!analyze_ref (loop, &ref, &base, &step, &delta, stmt)) return false; |