diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/shrink-wrap.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr103860.c | 31 |
2 files changed, 35 insertions, 1 deletions
diff --git a/gcc/shrink-wrap.c b/gcc/shrink-wrap.c index 5e60f34..35149ec 100644 --- a/gcc/shrink-wrap.c +++ b/gcc/shrink-wrap.c @@ -781,7 +781,7 @@ try_shrink_wrapping (edge *entry_edge, rtx_insn *prologue_seq) unsigned max_grow_size = get_uncond_jump_length (); max_grow_size *= param_max_grow_copy_bb_insns; - while (!vec.is_empty () && pro != entry) + while (pro != entry) { while (pro != entry && !can_get_prologue (pro, prologue_clobbered)) { @@ -791,6 +791,9 @@ try_shrink_wrapping (edge *entry_edge, rtx_insn *prologue_seq) vec.quick_push (pro); } + if (vec.is_empty ()) + break; + basic_block bb = vec.pop (); if (!can_dup_for_shrink_wrapping (bb, pro, max_grow_size)) while (!dominated_by_p (CDI_DOMINATORS, bb, pro)) diff --git a/gcc/testsuite/gcc.dg/pr103860.c b/gcc/testsuite/gcc.dg/pr103860.c new file mode 100644 index 0000000..15eee55 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr103860.c @@ -0,0 +1,31 @@ +/* PR rtl-optimization/103860 */ +/* { dg-do run } */ +/* { dg-options "-O3" } */ +/* { dg-additional-options "-fPIC" { target fpic } } */ + +static int d, *e; +int f; + +__attribute__((noinline)) signed char +foo (signed char b, signed char c) +{ + return b + c; +} + +int +main () +{ + signed char l; + for (l = -1; l; l = foo (l, 1)) + { + while (d < 0) + ; + if (d > 0) + { + f = 0; + *e = 0; + } + } + d = 0; + return 0; +} |