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Reorganize optimization levels 4 and 5, to use --no-lazy-code, --use-local-vars

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Reorganize optimization levels 4 and 5, to use --no-lazy-code, --use-local-vars
and --delay-construct instead of --lazy-code and --optimize-value-number.

The new meanings of those optimization levels are the following:

	opt_level(4, _, [
		use_local_vars		-	bool(yes),
		inline_simple_threshold	-	int(8),
		inline_compound_threshold -	int(20),
		higher_order_size_limit -	int(30)
	]).

	opt_level(5, _, [
		optimize_repeat		-	int(5),
		delay_construct		-	bool(yes),
		inline_compound_threshold -	int(100),
		higher_order_size_limit -	int(40)
	]).

compiler/options.m:
	Implement the new scheme for optimization levels 4 and 5.
This commit is contained in:
Zoltan Somogyi
2001-04-27 03:41:15 +00:00
parent f84fa08d67
commit 1973132a96
1 changed files with 10 additions and 8 deletions
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18
compiler/options.m
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@@ -1534,13 +1534,13 @@ opt_level(3, _, [
% Optimization level 4: apply optimizations which may have some
% payoff even if they increase compilation time quite a bit
% Currently this enables value_number
% Currently this enables the use of local variables
% and increases the inlining thresholds
opt_level(4, _, [
delay_construct - bool(yes),
lazy_code - bool(yes),
optimize_value_number - bool(yes),
% lazy_code - bool(yes),
% optimize_value_number - bool(yes),
use_local_vars - bool(yes),
inline_simple_threshold - int(8),
inline_compound_threshold - int(20),
higher_order_size_limit - int(30)
@@ -1549,13 +1549,15 @@ opt_level(4, _, [
% Optimization level 5: apply optimizations which may have some
% payoff even if they increase compilation time a lot
% Currently this enables pred_value_number
% and runs a second pass of value numbering
% Currently this enables the search for construction unifications that can be
% delayed past failing computations, allows more passes of the low-level
% optimizations, and increases the inlining thresholds still further.
opt_level(5, _, [
pred_value_number - bool(yes),
% pred_value_number - bool(yes),
% optimize_vnrepeat - int(2),
optimize_repeat - int(5),
optimize_vnrepeat - int(2),
delay_construct - bool(yes),
inline_compound_threshold - int(100),
higher_order_size_limit - int(40)
]).