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sparc.h (BRANCH_COST): Define. 

2002-04-18  David S. Miller  <davem@redhat.com>

	* config/sparc/sparc.h (BRANCH_COST): Define.

	* fold-const.c (BRANCH_COST): Don't provide default here, expr.h
	does it.

From-SVN: r52499
This commit is contained in:
David S. Miller 2002-04-18 16:34:11 -07:00 committed by David S. Miller
parent 5154135f4e
commit 938490a28c
3 changed files with 24 additions and 4 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2002-04-18 David S. Miller <davem@redhat.com>
* config/sparc/sparc.h (BRANCH_COST): Define.
* fold-const.c (BRANCH_COST): Don't provide default here, expr.h
does it.
2002-04-18 Richard Henderson <rth@redhat.com>
* config/ia64/ia64.c (ia64_function_arg_pass_by_reference): New.

17
gcc/config/sparc/sparc.h
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@ -2619,6 +2619,23 @@ do { \
|| (CLASS1) == FPCC_REGS || (CLASS2) == FPCC_REGS) \
? (sparc_cpu == PROCESSOR_ULTRASPARC ? 12 : 6) : 2)
/* Provide the cost of a branch. For pre-v9 processors we use
a value of 3 to take into account the potential annulling of
the delay slot (which ends up being a bubble in the pipeline slot)
plus a cycle to take into consideration the instruction cache
effects.
On v9 and later, which have branch prediction facilities, we set
it to the depth of the pipeline as that is the cost of a
mispredicted branch.
??? Set to 9 when PROCESSOR_ULTRASPARC3 is added */
#define BRANCH_COST \
((sparc_cpu == PROCESSOR_V9 \
|| sparc_cpu == PROCESSOR_ULTRASPARC) \
? 7 : 3)
/* Provide the costs of a rtl expression. This is in the body of a
switch on CODE. The purpose for the cost of MULT is to encourage
`synth_mult' to find a synthetic multiply when reasonable.

4
gcc/fold-const.c
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@ -109,10 +109,6 @@ static int count_cond PARAMS ((tree, int));
static tree fold_binary_op_with_conditional_arg
PARAMS ((enum tree_code, tree, tree, tree, int));
#ifndef BRANCH_COST
#define BRANCH_COST 1
#endif
#if defined(HOST_EBCDIC)
/* bit 8 is significant in EBCDIC */
#define CHARMASK 0xff