From f01ca8b338ca9d4c7dd2f6c5bc0988364bbc2c7f Mon Sep 17 00:00:00 2001 From: rguenth Date: Fri, 29 Nov 2013 10:47:52 +0000 Subject: [PATCH] 2013-11-29 Richard Biener PR tree-optimization/59334 * tree-ssa-dce.c (eliminate_unnecessary_stmts): Fix bug in previous commit. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205515 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/tree-ssa-dce.c | 3 ++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 035ab85fef4..fdd9485adcb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-11-29 Richard Biener + + PR tree-optimization/59334 + * tree-ssa-dce.c (eliminate_unnecessary_stmts): Fix bug + in previous commit. + 2013-11-29 Jakub Jelinek Richard Biener diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index e2177fed99c..8fc6fce3ec2 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -1200,7 +1200,8 @@ eliminate_unnecessary_stmts (void) if (TREE_CODE (ptr) == SSA_NAME) { gimple def_stmt = SSA_NAME_DEF_STMT (ptr); - if (!gimple_plf (def_stmt, STMT_NECESSARY)) + if (!gimple_nop_p (def_stmt) + && !gimple_plf (def_stmt, STMT_NECESSARY)) gimple_set_plf (stmt, STMT_NECESSARY, false); } } -- 2.11.4.GIT