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| author | Richard Kenner <kenner@gcc.gnu.org> | 1997-07-17 11:26:10 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1997-07-17 11:26:10 -0400 |
| commit | 76e0d2113de257d2505bba2cb82f9117ca74034c (patch) | |
| tree | 5589ec2fb0d9cd51eec2cbedc6dda78ab317468a /gcc/reload1.c | |
| parent | 11044f6690c12aa40ed84655c9949e0e3ab16bd1 (diff) | |
| download | gcc-76e0d2113de257d2505bba2cb82f9117ca74034c.zip gcc-76e0d2113de257d2505bba2cb82f9117ca74034c.tar.gz gcc-76e0d2113de257d2505bba2cb82f9117ca74034c.tar.bz2 | |
(reload): If checking stack, verify frame small enough.
From-SVN: r14471
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index ca61d97..8ad19a6 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -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; |