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| author | Richard Biener <rguenther@suse.de> | 2017-07-21 11:32:01 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-07-21 11:32:01 +0000 |
| commit | 9af7f3731b0ddffb3aa75b78a0ede411d36a3b09 (patch) | |
| tree | e717addc450ca3667b9854cfe21f2530cd0b9686 /gcc | |
| parent | 8c38aed722cbd17db8bcab50087acb9e40493c73 (diff) | |
| download | gcc-9af7f3731b0ddffb3aa75b78a0ede411d36a3b09.zip gcc-9af7f3731b0ddffb3aa75b78a0ede411d36a3b09.tar.gz gcc-9af7f3731b0ddffb3aa75b78a0ede411d36a3b09.tar.bz2 | |
re PR tree-optimization/81500 (ICE with -O3 in process_use, at tree-vect-stmts.c:506)
2017-06-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/81500
* tree-vect-loop.c (vect_is_simple_reduction): Properly fail if
we didn't identify a reduction path.
* gcc.dg/torture/pr81500.c: New testcase.
From-SVN: r250423
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/pr81500.c | 13 | ||||
| -rw-r--r-- | gcc/tree-vect-loop.c | 6 |
4 files changed, 26 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a2bc6e7..59d59b8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2017-06-21 Richard Biener <rguenther@suse.de> + + PR tree-optimization/81500 + * tree-vect-loop.c (vect_is_simple_reduction): Properly fail if + we didn't identify a reduction path. + 2017-07-21 Tom de Vries <tom@codesourcery.com> Cesar Philippidis <cesar@codesourcery.com> diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 482b8dd..148bb42 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-06-21 Richard Biener <rguenther@suse.de> + + PR tree-optimization/81500 + * gcc.dg/torture/pr81500.c: New testcase. + 2017-07-20 Nathan Sidwell <nathan@acm.org> * g++.dg/ext/anon-struct6.C: Adjust diag. diff --git a/gcc/testsuite/gcc.dg/torture/pr81500.c b/gcc/testsuite/gcc.dg/torture/pr81500.c new file mode 100644 index 0000000..7aaec21 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr81500.c @@ -0,0 +1,13 @@ +/* { dg-do compile } */ + +typedef int a; +void c(int *b) +{ + int d; + a e, f, *g, *h = b; + for (; d; d--) { + f = *g & 1; + *h-- = *g-- | e; + e = f; + } +} diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 64d8699..931f1b5 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -3243,7 +3243,7 @@ pop: } /* Check whether the reduction path detected is valid. */ - bool fail = false; + bool fail = path.length () == 0; bool neg = false; for (unsigned i = 1; i < path.length (); ++i) { @@ -3276,9 +3276,7 @@ pop: if (dump_enabled_p ()) { - report_vect_op (MSG_MISSED_OPTIMIZATION, - SSA_NAME_DEF_STMT - (USE_FROM_PTR (path[path.length ()-1].second)), + report_vect_op (MSG_MISSED_OPTIMIZATION, def_stmt, "reduction: unknown pattern: "); } |