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| author | Mark Mitchell <mark@codesourcery.com> | 2005-06-24 03:38:05 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 2005-06-24 03:38:05 +0000 |
| commit | 305a132148b9ced8ec6a6cf33a3d4635729fde9d (patch) | |
| tree | 5f35b0ac794937a9cfc60ea88d3484d5cc3b6fb2 /gcc/tree-ssa-operands.c | |
| parent | a3504e64abf8db7b538c95d5a10890c21c22b28f (diff) | |
| download | gcc-305a132148b9ced8ec6a6cf33a3d4635729fde9d.zip gcc-305a132148b9ced8ec6a6cf33a3d4635729fde9d.tar.gz gcc-305a132148b9ced8ec6a6cf33a3d4635729fde9d.tar.bz2 | |
re PR tree-optimization/22000 (Read from volatile member of struct is optimized away)
PR 22000
* tree-ssa-operands.c (get_expr_operands): Check the volatility of
the FIELD_DECL and set s_ann->has_volatile_ops accordingly.
From-SVN: r101289
Diffstat (limited to 'gcc/tree-ssa-operands.c')
| -rw-r--r-- | gcc/tree-ssa-operands.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c index 12bfc78..2e263cf 100644 --- a/gcc/tree-ssa-operands.c +++ b/gcc/tree-ssa-operands.c @@ -1346,7 +1346,11 @@ get_expr_operands (tree stmt, tree *expr_p, int flags) flags & ~opf_kill_def); if (code == COMPONENT_REF) - get_expr_operands (stmt, &TREE_OPERAND (expr, 2), opf_none); + { + if (TREE_THIS_VOLATILE (TREE_OPERAND (expr, 1))) + s_ann->has_volatile_ops = true; + get_expr_operands (stmt, &TREE_OPERAND (expr, 2), opf_none); + } return; } case WITH_SIZE_EXPR: |