diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-05 08:51:32 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-05 08:51:32 +0000 |
| commit | 8c9c312599ad7ea97348d8afaa8f430dd0b5cdda (patch) | |
| tree | dd78b3fcb7149b6b1f01919954805387f20f2265 | |
| parent | 1c579c0e17cba22beb7bd87244d1148784c52dab (diff) | |
| download | gcc-8c9c312599ad7ea97348d8afaa8f430dd0b5cdda.tar.gz | |
PR tree-optimization/83605
* gimple-ssa-strength-reduction.c: Include tree-eh.h.
(find_candidates_dom_walker::before_dom_children): Ignore stmts that
can throw.
* gcc.dg/pr83605.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256274 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/gimple-ssa-strength-reduction.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr83605.c | 20 |
4 files changed, 36 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1fcf203c2ef..14cd939eb3f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2018-01-05 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/83605 + * gimple-ssa-strength-reduction.c: Include tree-eh.h. + (find_candidates_dom_walker::before_dom_children): Ignore stmts that + can throw. + 2018-01-05 Sebastian Huber <sebastian.huber@embedded-brains.de> * config.gcc (epiphany-*-elf*): Add (epiphany-*-rtems*) configuration. diff --git a/gcc/gimple-ssa-strength-reduction.c b/gcc/gimple-ssa-strength-reduction.c index 521d7e942f3..1c00f094db8 100644 --- a/gcc/gimple-ssa-strength-reduction.c +++ b/gcc/gimple-ssa-strength-reduction.c @@ -55,6 +55,7 @@ along with GCC; see the file COPYING3. If not see #include "params.h" #include "tree-ssa-address.h" #include "tree-affine.h" +#include "tree-eh.h" #include "builtins.h" /* Information about a strength reduction candidate. Each statement @@ -1747,6 +1748,9 @@ find_candidates_dom_walker::before_dom_children (basic_block bb) { gimple *gs = gsi_stmt (gsi); + if (stmt_could_throw_p (gs)) + continue; + if (gimple_vuse (gs) && gimple_assign_single_p (gs)) slsr_process_ref (gs); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 90f4d5740c5..990cefa3452 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-01-05 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/83605 + * gcc.dg/pr83605.c: New test. + 2018-01-04 Jakub Jelinek <jakub@redhat.com> PR target/83554 diff --git a/gcc/testsuite/gcc.dg/pr83605.c b/gcc/testsuite/gcc.dg/pr83605.c new file mode 100644 index 00000000000..c680f0ce91f --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr83605.c @@ -0,0 +1,20 @@ +/* PR tree-optimization/83605 */ +/* { dg-do compile } */ +/* { dg-options "-O1 -ftrapv -fexceptions -fnon-call-exceptions" } */ + +int a; + +int +foo (int x) +{ + int b = a; + { + int c; + int *d = (x == 0) ? &c : &b; + + for (a = 0; a < 2; ++a) + c = (x + b) < a; + + return *d; + } +} |