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regclass.c (init_reg_sets): Move code that calculates tables dependent on reg_class_contents from here... 

* regclass.c (init_reg_sets): Move code that calculates tables
	dependent on reg_class_contents from here...
	(init_reg_sets_1): To here.

From-SVN: r23858
This commit is contained in:
J"orn Rennecke 1998-11-25 12:15:14 +00:00 committed by Joern Rennecke
parent 0b3d776a42
commit 910bc42d0d
3 changed files with 36 additions and 22 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Wed Nov 25 20:11:04 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* regclass.c (init_reg_sets): Move code that calculates tables
dependent on reg_class_contents from here...
(init_reg_sets_1): To here.
Wed Nov 25 14:54:46 1998 Zack Weinberg <zack@rabi.phys.columbia.edu>
* cpplib.h: Delete struct import_file. Add ihash element to

38
gcc/regclass.c
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@ -236,6 +236,25 @@ init_reg_sets ()
bcopy (initial_call_used_regs, call_used_regs, sizeof call_used_regs);
bzero (global_regs, sizeof global_regs);
/* Do any additional initialization regsets may need */
INIT_ONCE_REG_SET ();
}
/* After switches have been processed, which perhaps alter
`fixed_regs' and `call_used_regs', convert them to HARD_REG_SETs. */
static void
init_reg_sets_1 ()
{
register unsigned int i, j;
/* This macro allows the fixed or call-used registers
and the register classes to depend on target flags. */
#ifdef CONDITIONAL_REGISTER_USAGE
CONDITIONAL_REGISTER_USAGE;
#endif
/* Compute number of hard regs in each class. */
bzero ((char *) reg_class_size, sizeof reg_class_size);
@ -339,25 +358,6 @@ init_reg_sets ()
}
}
/* Do any additional initialization regsets may need */
INIT_ONCE_REG_SET ();
}
/* After switches have been processed, which perhaps alter
`fixed_regs' and `call_used_regs', convert them to HARD_REG_SETs. */
static void
init_reg_sets_1 ()
{
register unsigned int i, j;
/* This macro allows the fixed or call-used registers
to depend on target flags. */
#ifdef CONDITIONAL_REGISTER_USAGE
CONDITIONAL_REGISTER_USAGE;
#endif
/* Initialize "constant" tables. */
CLEAR_HARD_REG_SET (fixed_reg_set);

14
gcc/tm.texi
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@ -1357,9 +1357,17 @@ preserve the entire contents of a register across a call.
@findex fixed_regs
@findex call_used_regs
@item CONDITIONAL_REGISTER_USAGE
Zero or more C statements that may conditionally modify two variables
@code{fixed_regs} and @code{call_used_regs} (both of type @code{char
[]}) after they have been initialized from the two preceding macros.
Zero or more C statements that may conditionally modify four variables
@code{fixed_regs}, @code{call_used_regs}, @code{global_regs}
(these three are of type @code{char []}) and @code{reg_class_contents}
(of type @code{HARD_REG_SET}).
Before the macro is called @code{fixed_regs}, @code{call_used_regs}
and @code(reg_class_contents) have been initialized from
@code{FIXED_REGISTERS}, @code{CALL_USED_REGISTERS} and
@code{REG_CLASS_CONTENTS}, respectively,
@code{global_regs} has been cleared, and any @samp{-ffixed-@var{reg}},
@samp{-fcall-used-@var{reg}} and @samp{-fcall-saved-@var{reg}} command
options have been applied.
This is necessary in case the fixed or call-clobbered registers depend
on target flags.