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| author | Jakub Jelinek <jakub@redhat.com> | 2011-01-20 17:40:36 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-01-20 17:40:36 +0100 |
| commit | 583ac69ceb5c573aa3fd016f209f222b8ad704cb (patch) | |
| tree | 0b38a75908809e609122b64e553250403bfc82e0 /gcc/cfgexpand.c | |
| parent | 55429b8eb7922b9f016b93591f1dd8cf98546446 (diff) | |
| download | gcc-583ac69ceb5c573aa3fd016f209f222b8ad704cb.zip gcc-583ac69ceb5c573aa3fd016f209f222b8ad704cb.tar.gz gcc-583ac69ceb5c573aa3fd016f209f222b8ad704cb.tar.bz2 | |
re PR debug/47283 (ICE in refs_may_alias_p_1, at tree-ssa-alias.c)
PR debug/47283
* cfgexpand.c (expand_debug_expr): Instead of generating
(mem (debug_implicit_ptr)) for MEM_REFs use COMPONENT_REF
etc. handling.
* g++.dg/debug/pr47283.C: New test.
From-SVN: r169057
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index 81e988b..aeb2361 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -2567,6 +2567,13 @@ expand_debug_expr (tree exp) if (TREE_CODE (exp) == MEM_REF) { + if (GET_CODE (op0) == DEBUG_IMPLICIT_PTR + || (GET_CODE (op0) == PLUS + && GET_CODE (XEXP (op0, 0)) == DEBUG_IMPLICIT_PTR)) + /* (mem (debug_implicit_ptr)) might confuse aliasing. + Instead just use get_inner_reference. */ + goto component_ref; + op1 = expand_debug_expr (TREE_OPERAND (exp, 1)); if (!op1 || !CONST_INT_P (op1)) return NULL; @@ -2605,6 +2612,7 @@ expand_debug_expr (tree exp) return op0; + component_ref: case ARRAY_REF: case ARRAY_RANGE_REF: case COMPONENT_REF: |