From 4f72f5dad75eb24a699f691088eb6ea3cc907aff Mon Sep 17 00:00:00 2001 From: Jeffrey A Law Date: Wed, 6 Jan 1999 21:44:21 +0000 Subject: [PATCH] pa.h (DONT_RECORD_EQUIVALENCE): Kill. * pa.h (DONT_RECORD_EQUIVALENCE): Kill. * local-alloc.c (update_equiv_regs): Corresponding changes. * tm.texi (DONT_RECORD_EQUIVALENCE): Kill. From-SVN: r24541 --- gcc/ChangeLog | 4 ++++ gcc/config/pa/pa.h | 16 +--------------- gcc/local-alloc.c | 16 ---------------- gcc/tm.texi | 12 +----------- 4 files changed, 6 insertions(+), 42 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3c8a8b472032..56a362c672eb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -12,6 +12,10 @@ Wed Jan 6 17:55:19 1999 Robert Lipe Wed Jan 6 16:08:54 1999 Jeffrey A Law (law@cygnus.com) + * pa.h (DONT_RECORD_EQUIVALENCE): Kill. + * local-alloc.c (update_equiv_regs): Corresponding changes. + * tm.texi (DONT_RECORD_EQUIVALENCE): Kill. + * calls.c (special_function_p): Push alloca test inside the large conditional which excludes functions not at file scope or not extern. diff --git a/gcc/config/pa/pa.h b/gcc/config/pa/pa.h index 7d31381791b1..a0f9ff005170 100644 --- a/gcc/config/pa/pa.h +++ b/gcc/config/pa/pa.h @@ -1,5 +1,5 @@ /* Definitions of target machine for GNU compiler, for the HP Spectrum. - Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. + Copyright (C) 1992, 93-98, 1999 Free Software Foundation, Inc. Contributed by Michael Tiemann (tiemann@cygnus.com) of Cygnus Support and Tim Moore (moore@defmacro.cs.utah.edu) of the Center for Software Science at the University of Utah. @@ -810,20 +810,6 @@ int zdepi_cint_p (); #define CLASS_MAX_NREGS(CLASS, MODE) \ (!TARGET_SNAKE && (CLASS) == FP_REGS ? 1 : \ ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) - -/* We do not want to record equivalences for expressions which are - likely to cause a spill of %r1 if they are used by reload. - - Nor do we want to record an equivalence of a constant expression - that the target can not handle appearing in an insn, but which - also must be accepted by LEGITIMATE_CONSTANT_P. - - On the PA, these two goals are the same -- don't record any equivalences - for symbolic operands that are not read_only_operands. */ -#define DONT_RECORD_EQUIVALENCE(NOTE) \ - (symbolic_operand (XEXP (NOTE, 0), VOIDmode) \ - && !read_only_operand (XEXP (NOTE, 0), VOIDmode)) - /* Stack layout; function entry, exit and calling. */ diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 85cb8af555b4..0c7e2480eddc 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -796,22 +796,6 @@ update_equiv_regs () note = find_reg_note (insn, REG_EQUAL, NULL_RTX); -#ifdef DONT_RECORD_EQUIVALENCE - /* Allow the target to reject promotions of some REG_EQUAL notes to - REG_EQUIV notes. - - In some cases this can improve register allocation if the existence - of the REG_EQUIV note is likely to increase the lifetime of a register - that is likely to be spilled. - - It may also be necessary if the target can't handle certain constant - expressions appearing randomly in insns, but for whatever reason - those expressions must be considered legitimate constant expressions - to prevent them from being forced into memory. */ - if (note && DONT_RECORD_EQUIVALENCE (note)) - note = NULL; -#endif - if (REG_N_SETS (regno) != 1 && (! note || ! function_invariant_p (XEXP (note, 0)) diff --git a/gcc/tm.texi b/gcc/tm.texi index 738ec162bcf9..f08cbf9574c4 100644 --- a/gcc/tm.texi +++ b/gcc/tm.texi @@ -1,4 +1,4 @@ -@c Copyright (C) 1988,89,92,93,94,96,97,1998 Free Software Foundation, Inc. +@c Copyright (C) 1988,89,92,93,94,96,97,98,1999 Free Software Foundation, Inc. @c This is part of the GCC manual. @c For copying conditions, see the file gcc.texi. @@ -4389,16 +4389,6 @@ an immediate operand on the target machine. You can assume that @var{x} satisfies @code{CONSTANT_P}, so you need not check this. In fact, @samp{1} is a suitable definition for this macro on machines where anything @code{CONSTANT_P} is valid.@refill - -@findex DONT_RECORD_EQUIVALENCE -@item DONT_RECORD_EQUIVALENCE (@var{note}) -A C expression that is nonzero if the @code{REG_EQUAL} note @var{x} should not -be promoted to a @code{REG_EQUIV} note. - -Define this macro if @var{note} refers to a constant that must be accepted -by @code{LEGITIMATE_CONSTANT_P}, but must not appear as an immediate operand. - -Most machine descriptions do not need to define this macro. @end table @node Condition Code