diff options
Diffstat (limited to 'gcc/reg-stack.c')
| -rw-r--r-- | gcc/reg-stack.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c index 793c6b58ec4..49c733eb742 100644 --- a/gcc/reg-stack.c +++ b/gcc/reg-stack.c @@ -315,10 +315,16 @@ stack_regs_mentioned (rtx insn) max = VEC_length (char, stack_regs_mentioned_data); if (uid >= max) { + char *p; + unsigned int old_max = max; + /* Allocate some extra size to avoid too many reallocs, but do not grow too quickly. */ max = uid + uid / 20 + 1; - VEC_safe_grow_cleared (char, heap, stack_regs_mentioned_data, max); + VEC_safe_grow (char, heap, stack_regs_mentioned_data, max); + p = VEC_address (char, stack_regs_mentioned_data); + memset (&p[old_max], 0, + sizeof (char) * (max - old_max)); } test = VEC_index (char, stack_regs_mentioned_data, uid); |