diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-07 10:13:25 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-07 10:13:25 +0000 |
| commit | 6d72287b7ad40b4ebac984afcab7c2ee3577aed4 (patch) | |
| tree | 73257bbd69a5a06f1b84a4d755f735c5fa36e36c /gcc/emit-rtl.c | |
| parent | b2e3737c0119de5dde1b562d6c40cc86f6b9e6bb (diff) | |
| download | gcc-6d72287b7ad40b4ebac984afcab7c2ee3577aed4.tar.gz | |
2010-04-07 Richard Guenther <rguenther@suse.de>
PR middle-end/42617
* emit-rtl.c (set_mem_attributes_minus_bitpos): Do not
discard plain indirect references.
* fold-const.c (operand_equal_p): Guard against NULL_TREE
type.
* tree.c (tree_nop_conversion): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158045 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 6e1f9490614..dda2b0f0f70 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1750,6 +1750,7 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp, /* ??? Any reason the field size would be different than the size we got from the type? */ } + else if (flag_argument_noalias > 1 && (INDIRECT_REF_P (t2)) && TREE_CODE (TREE_OPERAND (t2, 0)) == PARM_DECL) @@ -1757,6 +1758,15 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp, expr = t2; offset = NULL; } + + /* If this is an indirect reference, record it. */ + else if (TREE_CODE (t) == INDIRECT_REF + || TREE_CODE (t) == MISALIGNED_INDIRECT_REF) + { + expr = t; + offset = const0_rtx; + apply_bitpos = bitpos; + } } /* If this is a Fortran indirect argument reference, record the @@ -1769,6 +1779,15 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp, offset = NULL; } + /* If this is an indirect reference, record it. */ + else if (TREE_CODE (t) == INDIRECT_REF + || TREE_CODE (t) == MISALIGNED_INDIRECT_REF) + { + expr = t; + offset = const0_rtx; + apply_bitpos = bitpos; + } + if (!align_computed && !INDIRECT_REF_P (t)) { unsigned int obj_align |