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| author | Eric Botcazou <ebotcazou@adacore.com> | 2010-11-14 11:24:47 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2010-11-14 11:24:47 +0000 |
| commit | ae788515d2b28952fdee5a83b010667dc9285732 (patch) | |
| tree | 97e1975467157f9597f21ef3b60596ea692c84ce /gcc/ipa-prop.c | |
| parent | 8926bd5d5c308154694122957e2a54c965ebee08 (diff) | |
| download | gcc-ae788515d2b28952fdee5a83b010667dc9285732.zip gcc-ae788515d2b28952fdee5a83b010667dc9285732.tar.gz gcc-ae788515d2b28952fdee5a83b010667dc9285732.tar.bz2 | |
re PR tree-optimization/45722 (FAIL: gcc.c-torture/execute/20040709-2.c execution at -O1 and -Os)
PR tree-optimization/45722
* tree-sra.c (build_ref_for_model): Always build a COMPONENT_REF if
this is a reference to a component.
* ipa-prop.c (ipa_get_member_ptr_load_param): Accept COMPONENT_REF.
(ipa_note_param_call): Adjust comment.
From-SVN: r166731
Diffstat (limited to 'gcc/ipa-prop.c')
| -rw-r--r-- | gcc/ipa-prop.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c index 473f483a..7c7df56 100644 --- a/gcc/ipa-prop.c +++ b/gcc/ipa-prop.c @@ -918,10 +918,15 @@ ipa_compute_jump_functions (struct cgraph_node *node, static tree ipa_get_member_ptr_load_param (tree rhs, bool use_delta) { - tree rec, ref_offset, fld_offset; - tree ptr_field; - tree delta_field; + tree rec, ref_field, ref_offset, fld, fld_offset, ptr_field, delta_field; + if (TREE_CODE (rhs) == COMPONENT_REF) + { + ref_field = TREE_OPERAND (rhs, 1); + rhs = TREE_OPERAND (rhs, 0); + } + else + ref_field = NULL_TREE; if (TREE_CODE (rhs) != MEM_REF) return NULL_TREE; rec = TREE_OPERAND (rhs, 0); @@ -933,6 +938,20 @@ ipa_get_member_ptr_load_param (tree rhs, bool use_delta) return NULL_TREE; ref_offset = TREE_OPERAND (rhs, 1); + + if (ref_field) + { + if (integer_nonzerop (ref_offset)) + return NULL_TREE; + + if (use_delta) + fld = delta_field; + else + fld = ptr_field; + + return ref_field == fld ? rec : NULL_TREE; + } + if (use_delta) fld_offset = byte_position (delta_field); else @@ -1005,10 +1024,15 @@ ipa_note_param_call (struct cgraph_node *node, int param_index, gimple stmt, below, the call is on the last line: <bb 2>: + f$__delta_5 = f.__delta; + f$__pfn_24 = f.__pfn; + + or + <bb 2>: f$__delta_5 = MEM[(struct *)&f]; f$__pfn_24 = MEM[(struct *)&f + 4B]; - ... + and a few lines below: <bb 5> D.2496_3 = (int) f$__pfn_24; |