diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-21 10:46:19 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-21 10:46:19 +0000 |
| commit | 6681da888194d79208610e3663fa7891f8d50e95 (patch) | |
| tree | a77de3b81e20c024d21b4b08032b956431e6ca31 | |
| parent | abe018600833c48e4af752263907f5b18aaab523 (diff) | |
| download | gcc-6681da888194d79208610e3663fa7891f8d50e95.tar.gz | |
2012-05-21 Richard Guenther <rguenther@suse.de>
* tree-loop-distribution.c (can_generate_builtin): Reject
volatile stmts.
* gcc.dg/torture/ldist-1.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@187707 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/ldist-1.c | 12 | ||||
| -rw-r--r-- | gcc/tree-loop-distribution.c | 4 |
4 files changed, 24 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b142f2baa8f..7d50aa4ebd9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-05-21 Richard Guenther <rguenther@suse.de> + + * tree-loop-distribution.c (can_generate_builtin): Reject + volatile stmts. + 2012-05-21 Chung-Lin Tang <cltang@codesourcery.com> * Makefile.in (options.c): Add options.h to included header diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 0e4edf5ca2e..33aaeb01061 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2012-05-21 Richard Guenther <rguenther@suse.de> + + * gcc.dg/torture/ldist-1.c: New testcase. + 2012-05-20 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/lto13.adb: New test. diff --git a/gcc/testsuite/gcc.dg/torture/ldist-1.c b/gcc/testsuite/gcc.dg/torture/ldist-1.c new file mode 100644 index 00000000000..b6a0f28bac8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/ldist-1.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-ftree-loop-distribute-patterns" } */ + +void foo (volatile int *p, int n) +{ + int i; + for (i = 0; i < n; ++i) + p[i] = 0; +} + +/* { dg-final { scan-assembler-not "memset" } } */ +/* { dg-final { cleanup-tree-dump "ldist" } } */ diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index d7506e69b04..f4b03bd8394 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -822,8 +822,10 @@ can_generate_builtin (struct graph *rdg, bitmap partition) nb_reads++; else if (RDG_MEM_WRITE_STMT (rdg, i)) { + gimple stmt = RDG_STMT (rdg, i); nb_writes++; - if (stmt_with_adjacent_zero_store_dr_p (RDG_STMT (rdg, i))) + if (!gimple_has_volatile_ops (stmt) + && stmt_with_adjacent_zero_store_dr_p (stmt)) stores_zero++; } |