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| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-09-03 14:56:53 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-09-03 14:56:53 +0000 |
| commit | 0a4cd568b37db01d1dc2c160935faee75561aa37 (patch) | |
| tree | cd3c3578717b3ddf37c3ceddfbcd16e8ecd43868 /gcc/tree-ssa-ccp.c | |
| parent | fb14449c7c426053a7909a94720c2499d80dc516 (diff) | |
| download | gcc-0a4cd568b37db01d1dc2c160935faee75561aa37.tar.gz | |
* cfgexpand.c (add_stack_var): Assert that the alignment is not zero.
* tree-ssa-ccp.c (fold_builtin_alloca_for_var): Revert latest change.
Force at least BITS_PER_UNIT alignment on the new variable.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@178499 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index fc8d74780ea..fc59d386cad 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -1708,8 +1708,6 @@ fold_builtin_alloca_for_var (gimple stmt) return NULL_TREE; size = TREE_INT_CST_LOW (arg); - if (size == 0) - return NULL_TREE; /* Heuristic: don't fold large vlas. */ threshold = (unsigned HOST_WIDE_INT)PARAM_VALUE (PARAM_LARGE_STACK_FRAME); @@ -1726,6 +1724,8 @@ fold_builtin_alloca_for_var (gimple stmt) elem_type = build_nonstandard_integer_type (BITS_PER_UNIT, 1); n_elem = size * 8 / BITS_PER_UNIT; align = MIN (size * 8, BIGGEST_ALIGNMENT); + if (align < BITS_PER_UNIT) + align = BITS_PER_UNIT; array_type = build_array_type_nelts (elem_type, n_elem); var = create_tmp_var (array_type, NULL); DECL_ALIGN (var) = align; |