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| author | Jakub Jelinek <jakub@redhat.com> | 2012-08-13 14:39:54 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-08-13 14:39:54 +0200 |
| commit | eb87c7c4890b87d5f228b9261c2e3b3a5b81acd7 (patch) | |
| tree | ad4832638401fe5e5c7f1ec4cd85012761658f24 /gcc/tree-ssa-loop-ivopts.c | |
| parent | 6a9573cc7b1d527e61f4ef7900c0a1c21203e24a (diff) | |
| download | gcc-eb87c7c4890b87d5f228b9261c2e3b3a5b81acd7.zip gcc-eb87c7c4890b87d5f228b9261c2e3b3a5b81acd7.tar.gz gcc-eb87c7c4890b87d5f228b9261c2e3b3a5b81acd7.tar.bz2 | |
re PR c/53968 (integer undefined behaviors in GCC)
PR c/53968
* tree.c (integer_pow2p): Avoid undefined signed overflows.
* simplify-rtx.c (neg_const_int): Likewise.
* expr.c (fixup_args_size_notes): Likewise.
* stor-layout.c (set_min_and_max_values_for_integral_type): Likewise.
* double-int.c (mul_double_wide_with_sign): Likewise.
(double_int_mask): Likewise.
* tree-ssa-loop-ivopts.c (get_address_cost): Likewise.
From-SVN: r190342
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index c44567f..81271a7 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -1,5 +1,5 @@ /* Induction variable optimizations. - Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. This file is part of GCC. @@ -3173,7 +3173,7 @@ get_address_cost (bool symbol_present, bool var_present, for (i = width; i >= 0; i--) { - off = -((HOST_WIDE_INT) 1 << i); + off = -((unsigned HOST_WIDE_INT) 1 << i); XEXP (addr, 1) = gen_int_mode (off, address_mode); if (memory_address_addr_space_p (mem_mode, addr, as)) break; @@ -3182,7 +3182,7 @@ get_address_cost (bool symbol_present, bool var_present, for (i = width; i >= 0; i--) { - off = ((HOST_WIDE_INT) 1 << i) - 1; + off = ((unsigned HOST_WIDE_INT) 1 << i) - 1; XEXP (addr, 1) = gen_int_mode (off, address_mode); if (memory_address_addr_space_p (mem_mode, addr, as)) break; |