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From: "David E. O'Brien" <obrien@FreeBSD.org>
Date: Sat, 29 Jan 2000 05:06:33 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/contrib/gcc/config/i386 freebsd.h i386.c
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obrien      2000/01/29 05:06:33 PST

  Modified files:
    contrib/gcc/config/i386 freebsd.h i386.c 
  Log:
  Fix our -mprofiler-epilogue code.
  
  "The problem is that egcs/gcc-2.95's reorganisation of the prologue and
  epilogue code to use rtl instead of output_asm_insn() completely broke our
  hooks.  rtl is emitted in a different order, only after optimisation, while
  output_asm_insn() is emitted immediately.  rtl is presumably used so that
  the prologue and epilogue can be optimised.
  
  I couldn't find any good examples to copy.  gcc's own
  FUNCTION_BLOCK_PROFILER still uses output_asm_insn() and seems to be
  completely broken.  One of the XXX comments points to this.
  
  IIRC, the hacks here basically arrange to emit magic label names; then when
  the magic names are output, they are transformed into prologue and epilogue
  code."
  
  Submitted by:	bde
  
  Revision  Changes    Path
  1.34      +63 -24    src/contrib/gcc/config/i386/freebsd.h
  1.7       +14 -1     src/contrib/gcc/config/i386/i386.c



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