5196 The cw wrapper restricts gcc to -O2

*** 18,27 ****
--- 18,28 ----
  #
  # CDDL HEADER END
  #
  
  #
+ # Copyright 2014 Gary Mills
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
  include $(SRC)/cmd/Makefile.cmd
*** 56,66 ****
  
  # The DTrace tests rely on "normal" behaviour from the compiler which
  # agressive optimization of small, simple, one compilation-unit programs may
  # utterly subvert.  We force the compiler to not optimize rather than engage
  # in an arms race with increasingly belligerent optimizers.
! COPTFLAG=       -xO0
  
  CERRWARN +=     -_gcc=-Wno-switch
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
  CERRWARN +=     -_gcc=-Wno-unused-function
--- 57,67 ----
  
  # The DTrace tests rely on "normal" behaviour from the compiler which
  # agressive optimization of small, simple, one compilation-unit programs may
  # utterly subvert.  We force the compiler to not optimize rather than engage
  # in an arms race with increasingly belligerent optimizers.
! COPTFLAG=       -_cc=-xO0 -_gcc=-O0
  
  CERRWARN +=     -_gcc=-Wno-switch
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
  CERRWARN +=     -_gcc=-Wno-unused-function