diff options
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index d86c406..914009b 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -1175,6 +1175,28 @@ reload (first, global, dumpfile) warning ("frame size too large for reliable stack checking"); } + /* If we are doing stack checking, give a warning if this function's + frame size is larger than we expect. */ + if (flag_stack_check && ! STACK_CHECK_BUILTIN) + { + HOST_WIDE_INT size = get_frame_size () + STACK_CHECK_FIXED_FRAME_SIZE; + static int verbose_warned = 0; + + for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) + if (regs_ever_live[i] && ! fixed_regs[i] && call_used_regs[i]) + size += UNITS_PER_WORD; + + if (size > STACK_CHECK_MAX_FRAME_SIZE) + { + warning ("frame size too large for reliable stack checking"); + if (! verbose_warned) + { + warning ("try reducing the number of local variables"); + verbose_warned = 1; + } + } + } + /* Indicate that we no longer have known memory locations or constants. */ if (reg_equiv_constant) free (reg_equiv_constant); |