From f522930c8fe1554c4af6f4d87b6529be1b716ffc Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Thu, 12 Feb 2015 15:28:41 -0500
Subject: common.opt (-flifetime-dse): New.

gcc/
	* common.opt (-flifetime-dse): New.
gcc/cp/
	* decl.c (begin_destructor_body): Condition clobber on
	-flifetime-dse.

From-SVN: r220657
---
 gcc/common.opt | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'gcc/common.opt')

diff --git a/gcc/common.opt b/gcc/common.opt
index cf4e503..6e65757 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1856,6 +1856,11 @@ fregmove
 Common Ignore
 Does nothing. Preserved for backward compatibility.
 
+flifetime-dse
+Common Report Var(flag_lifetime_dse) Init(1) Optimization
+Tell DSE that the storage for a C++ object is dead when the constructor
+starts and when the destructor finishes.
+
 flive-range-shrinkage
 Common Report Var(flag_live_range_shrinkage) Init(0) Optimization
 Relief of register pressure through live range shrinkage
-- 
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