diff options
| author | Richard Biener <rguenther@suse.de> | 2016-07-19 14:16:54 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-07-19 14:16:54 +0000 |
| commit | 13e889530d0da219afcbcd78c768688593dd5257 (patch) | |
| tree | 30e3412617c2b0809920e06ce7f81591d03f4515 /gcc/gimple-fold.c | |
| parent | 1caf0482104f4b8a3ea0109ae95dd19cf39c52a2 (diff) | |
| download | gcc-13e889530d0da219afcbcd78c768688593dd5257.zip gcc-13e889530d0da219afcbcd78c768688593dd5257.tar.gz gcc-13e889530d0da219afcbcd78c768688593dd5257.tar.bz2 | |
gimple-fold.c (get_base_constructor): Add VIEW_CONVERT case, handle all tcc_constant bases and valueize SSA names.
2016-07-19 Richard Biener <rguenther@suse.de>
* gimple-fold.c (get_base_constructor): Add VIEW_CONVERT case,
handle all tcc_constant bases and valueize SSA names.
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Handle
tcc_constant bases.
* c-c++-common/vector-subscript-6.c: New testcase.
* c-c++-common/vector-subscript-7.c: Likewise.
From-SVN: r238475
Diffstat (limited to 'gcc/gimple-fold.c')
| -rw-r--r-- | gcc/gimple-fold.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index cbfcc2f..3a50088 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -5508,6 +5508,9 @@ get_base_constructor (tree base, HOST_WIDE_INT *bit_offset, return NULL_TREE; base = TREE_OPERAND (base, 0); } + else if (valueize + && TREE_CODE (base) == SSA_NAME) + base = valueize (base); /* Get a CONSTRUCTOR. If BASE is a VAR_DECL, get its DECL_INITIAL. If BASE is a nested reference into another @@ -5529,6 +5532,10 @@ get_base_constructor (tree base, HOST_WIDE_INT *bit_offset, return init; } + case VIEW_CONVERT_EXPR: + return get_base_constructor (TREE_OPERAND (base, 0), + bit_offset, valueize); + case ARRAY_REF: case COMPONENT_REF: base = get_ref_base_and_extent (base, &bit_offset2, &size, &max_size, @@ -5538,11 +5545,13 @@ get_base_constructor (tree base, HOST_WIDE_INT *bit_offset, *bit_offset += bit_offset2; return get_base_constructor (base, bit_offset, valueize); - case STRING_CST: case CONSTRUCTOR: return base; default: + if (CONSTANT_CLASS_P (base)) + return base; + return NULL_TREE; } } |