5196 The cw wrapper restricts gcc to -O2

*** 21,30 ****
--- 21,31 ----
  
  #
  # Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
  # Copyright (c) 2012 by Delphix. All rights reserved.
  # Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ # Copyright 2014 Gary Mills
  #
  
  #
  # Makefile.master, global definitions for system source
  #
*** 384,393 ****
--- 385,397 ----
  CERRWARN += -_gcc=-Wno-missing-field-initializers
  
  # Unfortunately, this option can misfire very easily and unfixably.
  CERRWARN +=     -_gcc=-Wno-array-bounds
  
+ # Suppress it: this warning generates many false alarms
+ CERRWARN +=     -_gcc=-Wno-uninitialized
+ 
  # DEBUG v. -nd make for frequent unused variables, empty conditions, etc. in
  # -nd builds
  $(RELEASE_BUILD)CERRWARN += -_gcc=-Wno-unused
  $(RELEASE_BUILD)CERRWARN += -_gcc=-Wno-empty-body
  
*** 412,426 ****
  sparc_ASFLAGS=  $(sparc_AS_XARCH)
  sparcv9_ASFLAGS=$(sparcv9_AS_XARCH)
  i386_ASFLAGS=   $(i386_AS_XARCH)
  amd64_ASFLAGS=  $(amd64_AS_XARCH)
  
  #
! sparc_COPTFLAG=         -xO3
! sparcv9_COPTFLAG=       -xO3
! i386_COPTFLAG=          -O
! amd64_COPTFLAG=         -xO3
  
  COPTFLAG= $($(MACH)_COPTFLAG)
  COPTFLAG64= $($(MACH64)_COPTFLAG)
  
  # When -g is used, the compiler globalizes static objects
--- 416,433 ----
  sparc_ASFLAGS=  $(sparc_AS_XARCH)
  sparcv9_ASFLAGS=$(sparcv9_AS_XARCH)
  i386_ASFLAGS=   $(i386_AS_XARCH)
  amd64_ASFLAGS=  $(amd64_AS_XARCH)
  
+ # Adjustments to specified optimization level
+ ADJUST_COPT=            -_gcc=-fno-strict-aliasing -_gcc=-fno-tree-vrp
+ 
  #
! sparc_COPTFLAG=         $(ADJUST_COPT) -xO3
! sparcv9_COPTFLAG=       $(ADJUST_COPT) -xO3
! i386_COPTFLAG=          $(ADJUST_COPT) -O
! amd64_COPTFLAG=         $(ADJUST_COPT) -xO3
  
  COPTFLAG= $($(MACH)_COPTFLAG)
  COPTFLAG64= $($(MACH64)_COPTFLAG)
  
  # When -g is used, the compiler globalizes static objects