2014-06-26 Martin Jambor <mjambor@suse.cz>

* params.def (PARAM_ALLOW_LOAD_DATA_RACES)
	(PARAM_ALLOW_PACKED_LOAD_DATA_RACES)
	(PARAM_ALLOW_PACKED_STORE_DATA_RACES): Removed.
	(PARAM_ALLOW_STORE_DATA_RACES): Set default to zero.
	* opts.c (default_options_optimization): Set
	PARAM_ALLOW_STORE_DATA_RACES to one at -Ofast.
	* doc/invoke.texi (allow-load-data-races)
	(allow-packed-load-data-races, allow-packed-store-data-races):
	Removed.
	(allow-store-data-races): Document the new default.

testsuite/
	* g++.dg/simulate-thread/bitfields-2.C: Remove allow-load-data-races
	parameter.
	* g++.dg/simulate-thread/bitfields.C: Likewise.
	* gcc.dg/simulate-thread/strict-align-global.c: Remove
	allow-packed-store-data-races parameter.
	* gcc.dg/simulate-thread/subfields.c: Likewise.
	* gcc.dg/tree-ssa/20050314-1.c: Set parameter allow-store-data-races
	to one.

From-SVN: r212034
This commit is contained in:
Martin Jambor 2014-06-26 16:54:59 +02:00 committed by Martin Jambor
parent a5ad7492f8
commit 680a5a7c02
10 changed files with 36 additions and 37 deletions

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@ -1,3 +1,16 @@
2014-06-26 Martin Jambor <mjambor@suse.cz>
* params.def (PARAM_ALLOW_LOAD_DATA_RACES)
(PARAM_ALLOW_PACKED_LOAD_DATA_RACES)
(PARAM_ALLOW_PACKED_STORE_DATA_RACES): Removed.
(PARAM_ALLOW_STORE_DATA_RACES): Set default to zero.
* opts.c (default_options_optimization): Set
PARAM_ALLOW_STORE_DATA_RACES to one at -Ofast.
* doc/invoke.texi (allow-load-data-races)
(allow-packed-load-data-races, allow-packed-store-data-races):
Removed.
(allow-store-data-races): Document the new default.
2014-06-26 Martin Jambor <mjambor@suse.cz>
* ipa-prop.c (ipa_impossible_devirt_target): No longer static,

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@ -10176,25 +10176,10 @@ The maximum number of conditional stores paires that can be sunk. Set to 0
if either vectorization (@option{-ftree-vectorize}) or if-conversion
(@option{-ftree-loop-if-convert}) is disabled. The default is 2.
@item allow-load-data-races
Allow optimizers to introduce new data races on loads.
Set to 1 to allow, otherwise to 0. This option is enabled by default
unless implicitly set by the @option{-fmemory-model=} option.
@item allow-store-data-races
Allow optimizers to introduce new data races on stores.
Set to 1 to allow, otherwise to 0. This option is enabled by default
unless implicitly set by the @option{-fmemory-model=} option.
@item allow-packed-load-data-races
Allow optimizers to introduce new data races on packed data loads.
Set to 1 to allow, otherwise to 0. This option is enabled by default
unless implicitly set by the @option{-fmemory-model=} option.
@item allow-packed-store-data-races
Allow optimizers to introduce new data races on packed data stores.
Set to 1 to allow, otherwise to 0. This option is enabled by default
unless implicitly set by the @option{-fmemory-model=} option.
at optimization level @option{-Ofast}.
@item case-values-threshold
The smallest number of different values for which it is best to use a

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@ -620,6 +620,13 @@ default_options_optimization (struct gcc_options *opts,
opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
opts->x_param_values, opts_set->x_param_values);
/* At -Ofast, allow store motion to introduce potential race conditions. */
maybe_set_param_value
(PARAM_ALLOW_STORE_DATA_RACES,
opts->x_optimize_fast ? 1
: default_param_value (PARAM_ALLOW_STORE_DATA_RACES),
opts->x_param_values, opts_set->x_param_values);
if (opts->x_optimize_size)
/* We want to crossjump as much as possible. */
maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1,

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@ -1002,25 +1002,10 @@ DEFPARAM (PARAM_CASE_VALUES_THRESHOLD,
0, 0, 0)
/* Data race flags for C++0x memory model compliance. */
DEFPARAM (PARAM_ALLOW_LOAD_DATA_RACES,
"allow-load-data-races",
"Allow new data races on loads to be introduced",
1, 0, 1)
DEFPARAM (PARAM_ALLOW_STORE_DATA_RACES,
"allow-store-data-races",
"Allow new data races on stores to be introduced",
1, 0, 1)
DEFPARAM (PARAM_ALLOW_PACKED_LOAD_DATA_RACES,
"allow-packed-load-data-races",
"Allow new data races on packed data loads to be introduced",
1, 0, 1)
DEFPARAM (PARAM_ALLOW_PACKED_STORE_DATA_RACES,
"allow-packed-store-data-races",
"Allow new data races on packed data stores to be introduced",
1, 0, 1)
0, 0, 1)
/* Reassociation width to be used by tree reassoc optimization. */
DEFPARAM (PARAM_TREE_REASSOC_WIDTH,

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@ -1,3 +1,14 @@
2014-06-26 Martin Jambor <mjambor@suse.cz>
* g++.dg/simulate-thread/bitfields-2.C: Remove allow-load-data-races
parameter.
* g++.dg/simulate-thread/bitfields.C: Likewise.
* gcc.dg/simulate-thread/strict-align-global.c: Remove
allow-packed-store-data-races parameter.
* gcc.dg/simulate-thread/subfields.c: Likewise.
* gcc.dg/tree-ssa/20050314-1.c: Set parameter allow-store-data-races
to one.
2014-06-26 Martin Jambor <mjambor@suse.cz>
* g++.dg/ipa/pr60600.C: Fix typo.

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@ -1,5 +1,5 @@
/* { dg-do link } */
/* { dg-options "--param allow-load-data-races=0 --param allow-store-data-races=0" } */
/* { dg-options "--param allow-store-data-races=0" } */
/* { dg-final { simulate-thread } } */
/* Test that setting <var.a> does not touch either <var.b> or <var.c>.

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@ -1,5 +1,5 @@
/* { dg-do link } */
/* { dg-options "--param allow-load-data-races=0 --param allow-store-data-races=0" } */
/* { dg-options "--param allow-store-data-races=0" } */
/* { dg-final { simulate-thread } } */
/* Test that setting <var.a> does not touch either <var.b> or <var.c>.

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@ -1,5 +1,4 @@
/* { dg-do link } */
/* { dg-options "--param allow-packed-store-data-races=0" } */
/* { dg-final { simulate-thread } } */
#include <stdio.h>

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@ -1,5 +1,4 @@
/* { dg-do link } */
/* { dg-options "--param allow-packed-store-data-races=0" } */
/* { dg-final { simulate-thread } } */
#include <stdio.h>

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@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-lim1-details" } */
/* { dg-options "-O1 -fdump-tree-lim1-details --param allow-store-data-races=1" } */
float a[100];