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(reload): If checking stack, verify frame small enough.

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From-SVN: r14471
This commit is contained in:
Richard Kenner 1997-07-17 11:26:10 -04:00
parent 11044f6690
commit 76e0d2113d
1 changed files with 14 additions and 0 deletions
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14
gcc/reload1.c
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@ -2162,6 +2162,20 @@ reload (first, global, dumpfile)
}
#endif
/* 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;
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");
}
/* Indicate that we no longer have known memory locations or constants. */
reg_equiv_constant = 0;
reg_equiv_memory_loc = 0;