diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr81832.c | 22 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-ch.c | 5 |
4 files changed, 37 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6cd2ea6..eb32772 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2017-08-16 Bin Cheng <bin.cheng@arm.com> + + PR tree-optimization/81832 + * tree-ssa-loop-ch.c (should_duplicate_loop_header_p): Don't + copy loop header which has IFN_LOOP_DIST_ALIAS call. + 2017-08-16 Marek Polacek <polacek@redhat.com> PR middle/81695 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index fe2ea02..717e951 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-08-16 Bin Cheng <bin.cheng@arm.com> + + PR tree-optimization/81832 + * gcc.dg/tree-ssa/pr81832.c: New test. + 2017-08-16 Richard Sandiford <richard.sandiford@linaro.org> PR tree-optimization/81835 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr81832.c b/gcc/testsuite/gcc.dg/tree-ssa/pr81832.c new file mode 100644 index 0000000..893124e --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr81832.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O3" } */ + +int a, b, *c; +void d(void) +{ + int **e; + for(;;) + for(int f = 1; f <= 6; f++) + { + b = 0; + if(a) +g: + while(a++); + if (**e); + else + { + *c = a; + goto g; + } + } +} diff --git a/gcc/tree-ssa-loop-ch.c b/gcc/tree-ssa-loop-ch.c index 14cc6d8d..6bb0220 100644 --- a/gcc/tree-ssa-loop-ch.c +++ b/gcc/tree-ssa-loop-ch.c @@ -119,7 +119,10 @@ should_duplicate_loop_header_p (basic_block header, struct loop *loop, continue; if (gimple_code (last) == GIMPLE_CALL - && !gimple_inexpensive_call_p (as_a <gcall *> (last))) + && (!gimple_inexpensive_call_p (as_a <gcall *> (last)) + /* IFN_LOOP_DIST_ALIAS means that inner loop is distributed + at current loop's header. Don't copy in this case. */ + || gimple_call_internal_p (last, IFN_LOOP_DIST_ALIAS))) { if (dump_file && (dump_flags & TDF_DETAILS)) fprintf (dump_file, |