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| author | Richard Guenther <rguenther@suse.de> | 2008-03-06 12:08:23 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-03-06 12:08:23 +0000 |
| commit | fc0f49f351977cd44ac55551e4cb0fc92477eef7 (patch) | |
| tree | bebeb96faecfdcf797f71dee5229fe073b7e2e3e /gcc/tree.def | |
| parent | e186ff694e3233b58c8b7d04e90f223f84b9d691 (diff) | |
| download | gcc-fc0f49f351977cd44ac55551e4cb0fc92477eef7.zip gcc-fc0f49f351977cd44ac55551e4cb0fc92477eef7.tar.gz gcc-fc0f49f351977cd44ac55551e4cb0fc92477eef7.tar.bz2 | |
tree.def (BIT_FIELD_REF): Constrain result type and its precision.
2008-03-06 Richard Guenther <rguenther@suse.de>
* tree.def (BIT_FIELD_REF): Constrain result type and its precision.
* tree-cfg.c (verify_expr): Verify BIT_FIELD_REF constraints on
result type and precision.
* expr.c (get_inner_reference): Set unsignedp based on the result
type of BIT_FIELD_REF.
* tree.h (BIT_FIELD_REF_UNSIGNED): Remove.
* tree-sra.c (instantiate_element): Do not set BIT_FIELD_REF_UNSIGNED.
(try_instantiate_multiple_fields): Likewise. Use the correct type
for BIT_FIELD_REF.
(sra_build_assignment): Likewise.
(sra_build_elt_assignment): Likewise.
(sra_explode_bitfield_assignment): Likewise.
* print-tree.c (print_node): Do not check BIT_FIELD_REF_UNSIGNED.
* tree-vect-transform.c (vect_create_epilog_for_reduction): Do not
set BIT_FIELD_REF_UNSIGNED.
(vectorizable_load): Likewise.
From-SVN: r132969
Diffstat (limited to 'gcc/tree.def')
| -rw-r--r-- | gcc/tree.def | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index aac9d56..4a55ee0 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -391,8 +391,9 @@ DEFTREECODE (COMPONENT_REF, "component_ref", tcc_reference, 3) Operand 0 is the structure or union expression; operand 1 is a tree giving the constant number of bits being referenced; operand 2 is a tree giving the constant position of the first referenced bit. - The field can be either a signed or unsigned field; - BIT_FIELD_REF_UNSIGNED says which. */ + The result type width has to match the number of bits referenced. + If the result type is integral, its signedness specifies how it is extended + to its mode width. */ DEFTREECODE (BIT_FIELD_REF, "bit_field_ref", tcc_reference, 3) /* The ordering of the following codes is optimized for the checking |