diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr82603.c | 24 | ||||
| -rw-r--r-- | gcc/tree-if-conv.c | 3 |
4 files changed, 37 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2bb52cf..87474af 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2017-10-20 Richard Biener <rguenther@suse.de> + PR tree-optimization/82603 + * tree-if-conv.c (predicate_mem_writes): Make sure to only + remove false predicated stores. + +2017-10-20 Richard Biener <rguenther@suse.de> + * graphite-isl-ast-to-gimple.c (translate_isl_ast_to_gimple::graphite_copy_stmts_from_block): Remove return value and simplify, dump copied stmt after lhs diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index fd7ce2e..2744146 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-10-20 Richard Biener <rguenther@suse.de> + + PR tree-optimization/82603 + * gcc.dg/torture/pr82603.c: New testcase. + 2017-10-20 Tom de Vries <tom@codesourcery.com> * gcc.dg/tree-ssa/ldist-27.c: Remove dg-require-stack-size. diff --git a/gcc/testsuite/gcc.dg/torture/pr82603.c b/gcc/testsuite/gcc.dg/torture/pr82603.c new file mode 100644 index 0000000..960a48b --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr82603.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-ftree-loop-vectorize" } */ + +int +mr (unsigned int lf, int ms) +{ + unsigned int sw = 0; + char *cu = (char *)&ms; + + while (ms < 1) + { + if (lf == 0) + ms = 0; + else + ms = 0; + ms += ((lf > 0) && ((lf > sw) ? 1 : ++*cu)); + } + + if (lf != 0) + cu = (char *)&sw; + *cu = lf; + + return ms; +} diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index e2fce3c..a1803ff 100644 --- a/gcc/tree-if-conv.c +++ b/gcc/tree-if-conv.c @@ -2214,7 +2214,8 @@ predicate_mem_writes (loop_p loop) { if (!gimple_assign_single_p (stmt = gsi_stmt (gsi))) ; - else if (is_false_predicate (cond)) + else if (is_false_predicate (cond) + && gimple_vdef (stmt)) { unlink_stmt_vdef (stmt); gsi_remove (&gsi, true); |