diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/graphite.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/graphite/pr83563.c | 15 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b91925a..f8d2b34 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2018-01-08 Richard Biener <rguenther@suse.de> + PR tree-optimization/83563 + * graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV + cache. + +2018-01-08 Richard Biener <rguenther@suse.de> + PR middle-end/83713 * convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks. diff --git a/gcc/graphite.c b/gcc/graphite.c index fb8437c..8208d3d 100644 --- a/gcc/graphite.c +++ b/gcc/graphite.c @@ -322,6 +322,10 @@ canonicalize_loop_closed_ssa_form (void) FOR_EACH_LOOP (loop, LI_FROM_INNERMOST) canonicalize_loop_closed_ssa (loop); + /* We can end up releasing duplicate exit PHIs and also introduce + additional copies so the cached information isn't correct anymore. */ + scev_reset (); + checking_verify_loop_closed_ssa (true); } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d5fd96d..562b5a0 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2018-01-08 Richard Biener <rguenther@suse.de> + PR tree-optimization/83563 + * gcc.dg/graphite/pr83563.c: New testcase. + +2018-01-08 Richard Biener <rguenther@suse.de> + PR middle-end/83713 * g++.dg/torture/pr83713.C: New testcase. diff --git a/gcc/testsuite/gcc.dg/graphite/pr83563.c b/gcc/testsuite/gcc.dg/graphite/pr83563.c new file mode 100644 index 0000000..c1ca39e --- /dev/null +++ b/gcc/testsuite/gcc.dg/graphite/pr83563.c @@ -0,0 +1,15 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fgraphite -ftree-loop-distribution -fno-tree-dominator-opts -fno-tree-sink -fno-tree-dce" } */ + +void +sy (void) +{ + int hb; + + for (hb = 1; hb != 0; hb += hb) + { + } + + while (hb < 1) + ++hb; +} |