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invoke.texi (-fisolate-erroneous-paths): Document.

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* doc/invoke.texi (-fisolate-erroneous-paths): Document.

	* gimple-ssa-isolate-paths.c (gate_isolate_erroneous_paths):
	No longer check if we have __builtin_trap, assume it's
	available.

java/

	* builtins.c (initialize_builtins): Provide __builtin_trap.

From-SVN: r204533
This commit is contained in:
Jeff Law 2013-11-07 10:05:18 -07:00 • committed by Jeff Law
parent 0d40ed4302
commit 89d3d605c3
5 changed files with 23 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2013-11-07 Jeff Law <law@redhat.com>
* doc/invoke.texi (-fisolate-erroneous-paths): Document.
* gimple-ssa-isolate-paths.c (gate_isolate_erroneous_paths):
No longer check if we have __builtin_trap, assume it's
available.
2013-11-07 Thomas Schwinge <thomas@codesourcery.com>
* doc/sourcebuild.texi (Top Level) <lto-plugin>: GNU ld can use

7
gcc/doc/invoke.texi
View file

@ -377,6 +377,7 @@ Objective-C and Objective-C++ Dialects}.
-fira-region=@var{region} -fira-hoist-pressure @gol
-fira-loop-pressure -fno-ira-share-save-slots @gol
-fno-ira-share-spill-slots -fira-verbose=@var{n} @gol
-fisolate-erroneous-paths
-fivopts -fkeep-inline-functions -fkeep-static-consts -flive-range-shrinkage @gol
-floop-block -floop-interchange -floop-strip-mine -floop-nest-optimize @gol
-floop-parallelize-all -flto -flto-compression-level @gol
@ -6742,6 +6743,7 @@ also turns on the following optimization flags:
-finline-small-functions @gol
-findirect-inlining @gol
-fipa-sra @gol
-fisolate-erroneous-paths @gol
-foptimize-sibling-calls @gol
-fpartial-inlining @gol
-fpeephole2 @gol
@ -7635,6 +7637,11 @@ it may significantly increase code size
(see @option{--param ipcp-unit-growth=@var{value}}).
This flag is enabled by default at @option{-O3}.
@item -fisolate-erroneous-paths
Detect paths which trigger erroneous or undefined behaviour. Isolate those
paths from the main control flow and turn the statement with erroneous or
undefined behaviour into a trap.
@item -ftree-sink
@opindex ftree-sink
Perform forward store motion on trees. This flag is

3
gcc/gimple-ssa-isolate-paths.c
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@ -283,8 +283,7 @@ gate_isolate_erroneous_paths (void)
{
/* If we do not have a suitable builtin function for the trap statement,
then do not perform the optimization. */
return (flag_isolate_erroneous_paths != 0
&& builtin_decl_explicit (BUILT_IN_TRAP) != NULL);
return (flag_isolate_erroneous_paths != 0);
}
namespace {

4
gcc/java/ChangeLog
View file

@ -1,3 +1,7 @@
2013-11-07 Jeff Law <law@redhat.com>
* builtins.c (initialize_builtins): Provide __builtin_trap.
2013-10-29 David Malcolm <dmalcolm@redhat.com>
Patch autogenerated by refactor_symtab.py from

4
gcc/java/builtins.c
View file

@ -579,7 +579,9 @@ initialize_builtins (void)
define_builtin (BUILT_IN_RETURN_ADDRESS, "__builtin_return_address",
build_function_type_list (ptr_type_node, int_type_node, NULL_TREE),
"__builtin_return_address", ECF_NOTHROW | ECF_LEAF);
define_builtin (BUILT_IN_TRAP, "__builtin_trap",
build_function_type_list (void_type_node, NULL_TREE),
"__builtin_trap", ECF_NOTHROW | ECF_LEAF | ECF_NORETURN);
build_common_builtin_nodes ();
}