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| author | Richard Guenther <rguenther@suse.de> | 2011-01-11 14:23:20 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-01-11 14:23:20 +0000 |
| commit | e98965af89226abc5926aa12a360b5fe32cf2ace (patch) | |
| tree | d3fbfa09b4e46d2f7f3c93fdf49e3af511c1267d /gcc | |
| parent | 9f9ca914cc827c34816c71afb04e920ad5243156 (diff) | |
| download | gcc-e98965af89226abc5926aa12a360b5fe32cf2ace.zip gcc-e98965af89226abc5926aa12a360b5fe32cf2ace.tar.gz gcc-e98965af89226abc5926aa12a360b5fe32cf2ace.tar.bz2 | |
re PR tree-optimization/47239 ((int)&func & 3 is always optimized to 0 on some targets)
2011-01-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47239
* tree-ssa-ccp.c (get_value_from_alignment): Punt for FUNCTION_DECLs.
From-SVN: r168661
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b372b6c..1a910c4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-01-11 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/47239 + * tree-ssa-ccp.c (get_value_from_alignment): Punt for FUNCTION_DECLs. + 2011-01-11 Jeff Law <law@redhat.com> * PR tree-optimization/47086 diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index b2494d7..57fc56d 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -522,6 +522,10 @@ get_value_from_alignment (tree expr) val = bit_value_binop (PLUS_EXPR, TREE_TYPE (expr), TREE_OPERAND (base, 0), TREE_OPERAND (base, 1)); else if (base + /* ??? While function decls have DECL_ALIGN their addresses + may encode extra information in the lower bits on some + targets (PR47239). Simply punt for function decls for now. */ + && TREE_CODE (base) != FUNCTION_DECL && ((align = get_object_alignment (base, BIGGEST_ALIGNMENT)) > BITS_PER_UNIT)) { |