hg: jdk7/hotspot-comp/hotspot: 6833879: Assigning positive zero is ignored when old value is negative zero

[changpeng.fang at sun.com]

Changeset: 36ee9b69616e
Author:    cfang
Date:      2009-05-05 11:02 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/36ee9b69616e

6833879: Assigning positive zero is ignored when old value is negative zero
Summary: Don't perform CMOVE identity optimization for floating point types
Reviewed-by: kvn, never

! src/share/vm/opto/connode.cpp