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| author | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2014-06-13 03:17:02 +0000 |
|---|---|---|
| committer | Thomas Preud'homme <thopre01@gcc.gnu.org> | 2014-06-13 03:17:02 +0000 |
| commit | ca6cbdca8a7223e9b7ed828306b09f80db92fdb7 (patch) | |
| tree | 00dc9bc1a5848830de25e289b8e25e3225dafefb /gcc/tree-ssa-math-opts.c | |
| parent | 9aa1bac557c40373654ca4c15f3502ecb9b8b951 (diff) | |
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re PR tree-optimization/61375 (ICE in int_cst_value at -O3 in tree-ssa pass when compiling a reference to an __int128 value)
2014-06-13 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
PR tree-optimization/61375
* tree-ssa-math-opts.c (init_symbolic_number): Cancel optimization if
symbolic number cannot be represented in an uint64_t.
(find_bswap_or_nop_1): Likewise.
gcc/testsuite/
PR tree-optimization/61375
* gcc.c-torture/execute/pr61375-1.c: New test.
From-SVN: r211604
Diffstat (limited to 'gcc/tree-ssa-math-opts.c')
| -rw-r--r-- | gcc/tree-ssa-math-opts.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c index c868e92..066548d 100644 --- a/gcc/tree-ssa-math-opts.c +++ b/gcc/tree-ssa-math-opts.c @@ -1725,6 +1725,8 @@ init_symbolic_number (struct symbolic_number *n, tree src) if (size % BITS_PER_UNIT != 0) return false; size /= BITS_PER_UNIT; + if (size > (int)sizeof (uint64_t)) + return false; n->range = size; n->n = CMPNOP; @@ -1894,6 +1896,8 @@ find_bswap_or_nop_1 (gimple stmt, struct symbolic_number *n, int limit) type_size = TYPE_PRECISION (type); if (type_size % BITS_PER_UNIT != 0) return NULL_TREE; + if (type_size > (int)sizeof (uint64_t) * 8) + return NULL_TREE; /* Sign extension: result is dependent on the value. */ old_type_size = TYPE_PRECISION (n->type); |