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re PR middle-end/42898 (volatile structures and compound literal initializers)

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2010-02-08  Martin Jambor  <mjambor@suse.cz>

	PR middle-end/42898
	* tree-sra.c (build_accesses_from_assign): Do not mark in
	should_scalarize_away_bitmap if stmt has volatile ops.
	(sra_modify_assign): Do not process assigns piecemeal if if stmt
	has volatile ops.

From-SVN: r156599
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Martin Jambor 2010-02-08 14:24:12 +01:00 committed by Martin Jambor
parent 5d3579c539
commit d354552496
2 changed files with 13 additions and 2 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2010-02-08 Martin Jambor <mjambor@suse.cz>
PR middle-end/42898
* tree-sra.c (build_accesses_from_assign): Do not mark in
should_scalarize_away_bitmap if stmt has volatile ops.
(sra_modify_assign): Do not process assigns piecemeal if if stmt
has volatile ops.
2010-02-08 Joern Rennecke <joern.rennecke@embecosm.com>
* doc/tm.texi (TARGET_UNWIND_WORD_MODE): Document.

7
gcc/tree-sra.c
View File

@ -1023,7 +1023,8 @@ build_accesses_from_assign (gimple *stmt_ptr,
racc = build_access_from_expr_1 (rhs_ptr, stmt, false);
lacc = build_access_from_expr_1 (lhs_ptr, stmt, true);
if (should_scalarize_away_bitmap && racc && !is_gimple_reg_type (racc->type))
if (should_scalarize_away_bitmap && !gimple_has_volatile_ops (stmt)
&& racc && !is_gimple_reg_type (racc->type))
bitmap_set_bit (should_scalarize_away_bitmap, DECL_UID (racc->base));
if (lacc && racc
@ -2648,7 +2649,9 @@ sra_modify_assign (gimple *stmt, gimple_stmt_iterator *gsi,
there to do the copying and then load the scalar replacements of the LHS.
This is what the first branch does. */
if (contains_view_convert_expr_p (rhs) || contains_view_convert_expr_p (lhs)
if (gimple_has_volatile_ops (*stmt)
|| contains_view_convert_expr_p (rhs)
|| contains_view_convert_expr_p (lhs)
|| (access_has_children_p (racc)
&& !ref_expr_for_all_replacements_p (racc, lhs, racc->offset))
|| (access_has_children_p (lacc)