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Date: Sat, 7 Sep 1996 14:06:46 -0700 (PDT)
From: Bruce Evans <bde>
Message-Id: <199609072106.OAA10556@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/i386/boot/biosboot sys.c
Sender: owner-cvs-sys@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

bde         96/09/07 14:06:45

  Modified:    sys/i386/boot/biosboot  sys.c
  Log:
  Saved 48 bytes (46 before padding) using assorted nano-optimizations:
  
  - avoiding strcmp("?" saved 12 bytes.  gcc inlined the strcmp()
    but this takes as much or more code as a function call.  The
    inlining was bogus because the strcmp() in the bootstrap isn't
    standard.
  
  - using a char instead of an int for the boolean `last_only' saved 8
    bytes.  Booleans should usually be represented as chars on the i386.
  
  - simplifying the return tests saved 9 bytes.
  
  - using putc instead of printf to print a newline saved 3 bytes of code
    and 2 bytes of const data.
  
  - avoiding `else's by always doing the else clause and fixing it up
    saved 4+8 bytes.
  
  Revision  Changes    Path
  1.12      +14 -13    src/sys/i386/boot/biosboot/sys.c