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| author | Richard Kenner <kenner@gcc.gnu.org> | 1997-07-25 08:36:27 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1997-07-25 08:36:27 -0400 |
| commit | 2d59d98e014a64f5a48cbb3033f25896b2d9ab79 (patch) | |
| tree | feb5fe8d378f43e5da57258b31614b95bfd1751f | |
| parent | 06f0e8f37cd12355aa5ce4e51024d3477d2970ac (diff) | |
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(expand_call): If -fstack-check and temp needed for arg is too large,
use alloca.
From-SVN: r14526
| -rw-r--r-- | gcc/calls.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index c510a33..35166a5 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1051,7 +1051,11 @@ expand_call (exp, target, ignore) rtx copy; if (TYPE_SIZE (type) == 0 - || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) + || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST + || (flag_stack_check && ! STACK_CHECK_BUILTIN + && (TREE_INT_CST_HIGH (TYPE_SIZE (type)) != 0 + || (TREE_INT_CST_LOW (TYPE_SIZE (type)) + > STACK_CHECK_MAX_VAR_SIZE * BITS_PER_UNIT)))) { /* This is a variable-sized object. Make space on the stack for it. */ |