2012-11-06 Robert Dewar <dewar@adacore.com>
* par_sco.adb, bindgen.adb, exp_vfpt.adb, exp_vfpt.ads, exp_ch2.adb,
errout.adb, sem_ch8.adb: Minor reformatting.
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* einfo.adb: Include Loop_Entry_Attributes to the list of
Node/List/Elist10 usage.
(Loop_Entry_Attributes): New routine.
(Set_Loop_Entry_Attributes): New routine.
(Write_Field10_Name): Add an output string for Loop_Entry_Attributes.
* einfo.ads: Define new attribute Loop_Entry_Attributes along
with its usage in nodes.
(Loop_Entry_Attributes): New routine and dedicated pragma Inline.
(Set_Loop_Entry_Attributes): New routine and dedicated pragma Inline.
* exp_attr.adb (Expand_N_Attribute_Reference): Do not expand
Attribute_Loop_Entry here.
* exp_ch5.adb: Add with and use clause for Elists;
(Expand_Loop_Entry_Attributes): New routine.
(Expand_N_Loop_Statement): Add a call to Expand_Loop_Entry_Attributes.
* exp_prag.adb (Expand_Pragma_Loop_Assertion): Specialize the
search to include multiple nested loops produced by the expansion
of Ada 2012 array iterator.
* sem_attr.adb: Add with and use clause for Elists.
(Analyze_Attribute): Check the legality of attribute Loop_Entry.
(Resolve_Attribute): Nothing to do for Loop_Entry.
(S14_Attribute): New routine.
* snames.ads-tmpl: Add a comment on entries marked with
HiLite. Add new name Name_Loop_Entry. Add new attribute
Attribute_Loop_Entry.
From-SVN: r193227
2012-11-06 Geert Bosch <bosch@adacore.com>
* eval_fat.adb (Machine, Succ): Fix front end to support static
evaluation of attributes on targets with both VAX and IEEE float.
* sem_util.ads, sem_util.adb (Has_Denormals, Has_Signed_Zeros):
New type-specific functions. Previously we used Denorm_On_Target
and Signed_Zeros_On_Target directly, but that doesn't work well
for OpenVMS where a single target supports both floating point
with and without signed zeros.
* sem_attr.adb (Attribute_Denorm, Attribute_Signed_Zeros): Use
new Has_Denormals and Has_Signed_Zeros functions to support both
IEEE and VAX floating point on a single target.
2012-11-06 Tristan Gingold <gingold@adacore.com>
* bindgen.adb (System_Interrupts_Used): New variable.
(Gen_Adainit): Declare and call
Install_Restricted_Handlers_Sequential if System.Interrupts is
used when elaboration policy is sequential.
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* sem_ch8.adb: Complete previous change.
From-SVN: r193225
2012-11-06 Tristan Gingold <gingold@adacore.com>
* fe.h (Get_Vax_Real_Literal_As_Signed): Declare.
* eval_fat.adb, eval_fat.ads (Decompose_Int): Move spec in package spec.
* exp_vfpt.adb, exp_vfpt.ads (Vax_Real_Literal_As_Signed): New function.
(Expand_Vax_Real_Literal): Remove.
* exp_ch2.adb (Expand_N_Real_Literal): Do nothing.
* sem_eval.adb (Expr_Value_R): Remove special Vax float case,
as this is not anymore a special case.
2012-11-06 Yannick Moy <moy@adacore.com>
* uintp.ads: Minor correction of typo in comment.
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* sem_prag.adb (Analyze_Pragnma, case Unchecked_Union): remove
requirement that discriminants of an unchecked_union must have
defaults.
2012-11-06 Vasiliy Fofanov <fofanov@adacore.com>
* projects.texi: Minor wordsmithing.
From-SVN: r193224
2012-11-06 Yannick Moy <moy@adacore.com>
* s-bignum.adb (Div_Rem): Fix another bug in step D3.
2012-11-06 Tristan Gingold <gingold@adacore.com>
* s-tarest.adb (Create_Restricted_Task): Call
Create_Restricted_Task_Sequential in sequential case.
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* exp_prag.adb (Expand_Pragma_Loop_Assertion): Do not rewrite the
pragma into a null statement as its presence is desirable in -gnatG
output.
From-SVN: r193219
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* sem_ch8.adb (Check_Constrained_Object): Do nothing if the
renamed object is a limited record.
2012-11-06 Bernard Banner <banner@adacore.com>
* sysdep.c (_getpagesize): New. Minor reformatting.
From-SVN: r193218
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* exp_prag.adb (Expand_Pragma_Loop_Assertion): Update the comment
on intended expansion. Reimplement the logic which expands the
termination variants.
(Process_Increase_Decrease): Update the parameter profile and the
comment related to it. Accommodate the new aggregate-like appearance of
the termination variants.
* sem_prag.adb (Analyze_Pragma): Update the syntax of pragma
Loop_Assertion. Reimplement the semantic analysis of the pragma
to accommodate the new aggregate-like variant.
(Check_Variant): New routine.
* snames.ads-tmpl: Change names Name_Decreases and Name_Increases
to Name_Decreasing and Name_Increasing respectively. Add name
Variant.
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* sem_eval.adb: Static evaluation of case expressions.
From-SVN: r193216
2012-11-06 Robert Dewar <dewar@adacore.com>
* exp_prag.adb, impunit.adb, exp_ch9.adb, par-ch4.adb,
s-tarest.adb: Minor reformatting.
2012-11-06 Tristan Gingold <gingold@adacore.com>
* s-tposen.ads: Minor comment update.
2012-11-06 Arnaud Charlet <charlet@adacore.com>
* sysdep.c: Rename sig* wrappers to use unique names.
2012-11-06 Yannick Moy <moy@adacore.com>
* exp_dbug.adb (Qualify_Entity_Name): Mark entity as having a qualified
name after being treated, in formal verification mode.
2012-11-06 Fedor Rybin <frybin@adacore.com>
* gnat_ugn.texi: Updating gnattest section to reflect changes
in default behaviour of the tool.
From-SVN: r193215
2012-11-06 Thomas Quinot <quinot@adacore.com>
* s-oscons-tmplt.c: Interfaces.C now needs to be WITH'd even
on platforms that do not support sockets (for the benefit of
subtype IOCTL_Req_T).
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* par-ch4.adb (P_Primary): if-expressions, case-expressions,
and quantified expressions are legal if surrounded by parentheses
from an enclosing context, such as a call or an instantiation.
2012-11-06 Yannick Moy <moy@adacore.com>
* impunit.adb (Get_Kind_Of_Unit): Return appropriate kind for
predefined implementation files, instead of returning
Not_Predefined_Unit on all .adb files.
2012-11-06 Tristan Gingold <gingold@adacore.com>
* exp_ch9.adb (Build_Activation_Chain_Entity): Return immediately if
partition elaboration policy is sequential.
(Build_Task_Activation_Call): Likewise. Use
Activate_Restricted_Tasks on restricted profile.
(Make_Task_Create_Call): Do not use the _Chain
parameter if elaboration policy is sequential. Call
Create_Restricted_Task_Sequential in that case.
* exp_ch3.adb (Build_Initialization_Call): Change condition to
support concurrent elaboration policy.
(Build_Record_Init_Proc): Likewise.
(Init_Formals): Likewise.
* bindgen.adb (Gen_Adainit): Declare Partition_Elaboration_Policy
and set it in generated code if the elaboration policy is
sequential. The procedure called to activate all tasks is now
named __gnat_activate_all_tasks.
* rtsfind.adb (RE_Activate_Restricted_Task,
RE_Create_Restricted_Task_Sequential): New RE_Id literals.
* s-tarest.adb (Create_Restricted_Task): Added to create a task without
adding it on an activation chain.
(Activate_Tasks): Has now a Chain parameter.
(Activate_All_Tasks_Sequential): Added. Called by the binder to
activate all tasks.
(Activate_Restricted_Tasks): Added. Called during elaboration to
activate tasks of the units.
* s-tarest.ads: Remove pragma Partition_Elaboration_Policy.
(Partition_Elaboration_Policy): New variable (set by the binder).
(Create_Restricted_Task): Revert removal of the chain parameter.
(Create_Restricted_Task_Sequential): New procedure.
(Activate_Restricted_Tasks): Revert removal.
(Activate_All_Tasks_Sequential): New procedure.
From-SVN: r193214
* adaint.c Add file macro definitions missing on Android.
* adaint.h Avoid definitions related to task affinity and CPU
sets since this functionality is missing on the Android
* errno.c (__set_errno): Android already contains such a named
procedure so do include again.
* gsocket.h: Sockets not supported on Android.
* init.c: Avoid linux related code not supported on Android.
* sysdep.c (sigismember, sigaddset, sigdelset, sigemptyset,
sigfillset): wrapper functions since sig routines are defined
as inline macros on Android.
* terminals.c: Add stubs for terminal related functions not
supported on Android.
From-SVN: r193213
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* sem_prag.adb (Analyze_Pragma): Do not
output the characters of an illegal argument as it may not have
characters to begin with.
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* exp_prag.adb (Expand_Pragma_Loop_Assertion):
Change the order of argument processing to avoid disappearing
increase / decrease expressions.
From-SVN: r193212
2012-11-06 Hristian Kirtchev <kirtchev@adacore.com>
* exp_prag.adb: Add with and use clause for Sem_Ch8.
(Expand_N_Pragma): Add a new variant to expand pragma Loop_Assertion.
(Expand_Pragma_Loop_Assertion): New routine.
* par-prag.adb (Prag): The semantic analysis of pragma
Loop_Assertion is carried out by Analyze_Pragma. No need for
checks in the parser.
* sem_prag.adb: Add a reference position value for pragma
Loop_Assertion in Sig_Flags.
(Analyze_Pragma): Add semantic analysis for pragma Loop_Assertion.
* snames.ads-tmpl: Add the following new names:
Name_Decreases Name_Increases Name_Loop_Assertion.
Add new pragma id Pragma_Loop_Assertion.
2012-11-06 Ed Schonberg <schonberg@adacore.com>
* exp_ch5.adb: Identifier in iterator must have debug
information.
From-SVN: r193211
PR target/41993
* mode-switching.c (create_pre_exit): Set return_copy to
last_insn when copy_start is a pseudo reg.
Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>
From-SVN: r193210
========================
Sriraman Tallam, tmsriram@google.com
Overview of the patch which adds support to specify function versions. This is
only enabled for target i386.
Example:
int foo (); /* Default version */
int foo () __attribute__ ((target("avx,popcnt")));/*Specialized for avx and popcnt */
int foo () __attribute__ ((target("arch=core2,ssse3")));/*Specialized for core2 and ssse3*/
int main ()
{
int (*p)() = &foo;
return foo () + (*p)();
}
int foo ()
{
return 0;
}
int __attribute__ ((target("avx,popcnt")))
foo ()
{
return 0;
}
int __attribute__ ((target("arch=core2,ssse3")))
foo ()
{
return 0;
}
The above example has foo defined 3 times, but all 3 definitions of foo are
different versions of the same function. The call to foo in main, directly and
via a pointer, are calls to the multi-versioned function foo which is dispatched
to the right foo at run-time.
Front-end changes:
The front-end changes are calls at appropriate places to target hooks that
determine the following:
* Determine if two function decls with the same signature are versions.
* Determine the assembler name of a function version.
* Generate the dispatcher function for a set of function versions.
* Compare versions to see if one has a higher priority over the other.
All the implementation happens in the target-specific config/i386/i386.c.
What does the patch do?
* Tracking decls that correspond to function versions of function
name, say "foo":
When the front-end sees more than one decl for "foo", it calls a target hook to
determine if they are versions. To prevent duplicate definition errors with
other versions of "foo", "decls_match" function in cp/decl.c is made to return
false when 2 decls have are deemed versions by the target. This will make all
function versions of "foo" to be added to the overload list of "foo".
* Change the assembler names of the function versions.
For i386, the target changes the assembler names of the function versions by
suffixing the sorted list of args to "target" to the function name of "foo".
For example, the assembler name of
"void foo () __attribute__ ((target ("sse4")))" will
become _Z3foov.sse4. The target hook mangle_decl_assembler_name is used
for this.
* Overload resolution:
Function "build_over_call" in cp/call.c sees a call to function
"foo", which is multi-versioned. The overload resolution happens in
function "joust" in "cp/call.c". Here, the call to "foo" has all
possible versions of "foo" as candidates. All the candidates of "foo" are
stored in the cgraph side data structure. Each version of foo is chained in a
doubly-linked list with the default function as the first element. This allows
any pass to access all the semantically identical versions. A call to a
multi-versioned function will be replaced by a call to a dispatcher function,
determined by a target hook, to execute the right function version at run-time.
Optimization to directly call a version when possible:
Also, in joust, where overload resolution happens, a multiversioned function
resolution is made to return the most specialized version. This is the version
that will be checked for dispatching first and is determined by the target.
Now, if the caller can inline this function version then a direct call is made
to this function version rather than go through the dispatcher. When a direct
call cannot be made, a call to the dispatcher function is created.
* Creating the dispatcher body.
The dispatcher body, called the resolver is made only when there is a call to a
multiversioned function dispatcher or the address of a function is taken. This
is generated during cgraph_analyze_function. This is done by another target hook.
* Dispatch ordering.
The order in which the function versions are checked during dispatch is based
on a priority value assigned for the ISA that is catered. More specialized
versions are checked for dispatching first. This is to mitigate the ambiguity
that can arise when more than one function version is valid for execution on
a particular platform. This is not a perfect solution, and in future the user
should be allowed to assign a dispatching priority value to each version.
Function MV in the Intel compiler:
The intel compiler supports function multiversioning and the syntax is
similar to the patch proposed here. Here is an example of how to
generate multiple function versions with the intel compiler.
/* Create a stub function to specify the various versions of function that
will be created, using declspec attribute cpu_dispatch. */
__declspec (cpu_dispatch (core_i7_sse4_2, atom, generic))
void foo () {};
/* Bodies of each function version. */
/* Intel Corei7 processor + SSE4.2 version. */
__declspec (cpu_specific(core_i7_sse4_2))
void foo ()
{
printf ("corei7 + sse4.2");
}
/* Atom processor. */
__declspec (cpu_specific(atom))
void foo ()
{
printf ("atom");
}
/* The generic or the default version. */
__declspec (cpu_specific(generic))
void foo ()
{
printf ("This is generic");
}
A new function version is generated by defining a new function with the same
signature but with a different cpu_specific declspec attribute string. The
set of cpu_specific strings that are allowed is the following:
"core_2nd_gen_avx"
"core_aes_pclmulqdq"
"core_i7_sse4_2"
"core_2_duo_sse4_1"
"core_2_duo_ssse3"
"atom"
"pentium_4_sse3"
"pentium_4"
"pentium_m"
"pentium_iii"
"generic"
Comparison with the GCC MV implementation in this patch:
* Version creation syntax:
The implementation in this patch also has a similar syntax to specify function
versions. The first stub function is not needed. Here is the code to generate
the function versions with this patch:
/* Intel Corei7 processor + SSE4.2 version. */
__attribute__ ((target ("arch=corei7, sse4.2")))
void foo ()
{
printf ("corei7 + sse4.2");
}
/* Atom processor. */
__attribute__ ((target ("arch=atom")))
void foo ()
{
printf ("atom");
}
void foo ()
{
}
The target attribute can have one of the following arch names:
"amd"
"intel"
"atom"
"core2"
"corei7"
"nehalem"
"westmere"
"sandybridge"
"amdfam10h"
"barcelona"
"shanghai"
"istanbul"
"amdfam15h"
"bdver1"
"bdver2"
and any number of the following ISA names:
"cmov"
"mmx"
"popcnt"
"sse"
"sse2"
"sse3"
"ssse3"
"sse4.1"
"sse4.2"
"avx"
"avx2"
* doc/tm.texi.in (TARGET_OPTION_FUNCTION_VERSIONS): New hook
description.
* (TARGET_COMPARE_VERSION_PRIORITY): New hook description.
* (TARGET_GET_FUNCTION_VERSIONS_DISPATCHER): New hook description.
* (TARGET_GENERATE_VERSION_DISPATCHER_BODY): New hook description.
* doc/tm.texi: Regenerate.
* target.def (compare_version_priority): New target hook.
* (generate_version_dispatcher_body): New target hook.
* (get_function_versions_dispatcher): New target hook.
* (function_versions): New target hook.
* cgraph.c (cgraph_fnver_htab): New htab.
(cgraph_fn_ver_htab_hash): New function.
(cgraph_fn_ver_htab_eq): New function.
(version_info_node): New pointer.
(insert_new_cgraph_node_version): New function.
(get_cgraph_node_version): New function.
(delete_function_version): New function.
(record_function_versions): New function.
* cgraph.h (cgraph_node): New bitfield dispatcher_function.
(cgraph_function_version_info): New struct.
(get_cgraph_node_version): New function.
(insert_new_cgraph_node_version): New function.
(record_function_versions): New function.
(delete_function_version): New function.
(init_lowered_empty_function): Expose function.
* tree.h (DECL_FUNCTION_VERSIONED): New macro.
(tree_function_decl): New bit-field versioned_function.
* cgraphunit.c (cgraph_analyze_function): Generate body of multiversion
function dispatcher.
(cgraph_analyze_functions): Analyze dispatcher function.
(init_lowered_empty_function): Make non-static. New parameter in_ssa.
(assemble_thunk): Add parameter to call to init_lowered_empty_function.
* config/i386/i386.c (add_condition_to_bb): New function.
(get_builtin_code_for_version): New function.
(ix86_compare_version_priority): New function.
(feature_compare): New function.
(dispatch_function_versions): New function.
(ix86_function_versions): New function.
(attr_strcmp): New function.
(ix86_mangle_function_version_assembler_name): New function.
(ix86_mangle_decl_assembler_name): New function.
(make_name): New function.
(make_dispatcher_decl): New function.
(is_function_default_version): New function.
(ix86_get_function_versions_dispatcher): New function.
(make_attribute): New function.
(make_resolver_func): New function.
(ix86_generate_version_dispatcher_body): New function.
(fold_builtin_cpu): Return integer for cpu builtins.
(TARGET_MANGLE_DECL_ASSEMBLER_NAME): New macro.
(TARGET_COMPARE_VERSION_PRIORITY): New macro.
(TARGET_GENERATE_VERSION_DISPATCHER_BODY): New macro.
(TARGET_GET_FUNCTION_VERSIONS_DISPATCHER): New macro.
(TARGET_OPTION_FUNCTION_VERSIONS): New macro.
* class.c (add_method): Change assembler names of function versions.
(mark_versions_used): New static function.
(resolve_address_of_overloaded_function): Create dispatcher decl and
return address of dispatcher instead.
* decl.c (decls_match): Make decls unmatched for versioned
functions.
(duplicate_decls): Remove ambiguity for versioned functions.
Delete versioned function data for merged decls.
* decl2.c (check_classfn): Check attributes of versioned functions
for match.
* call.c (get_function_version_dispatcher): New function.
(mark_versions_used): New static function.
(build_over_call): Make calls to multiversioned functions
to call the dispatcher.
(joust): For calls to multi-versioned functions, make the most
specialized function version win.
* testsuite/g++.dg/mv1.C: New test.
* testsuite/g++.dg/mv2.C: New test.
* testsuite/g++.dg/mv3.C: New test.
* testsuite/g++.dg/mv4.C: New test.
* testsuite/g++.dg/mv5.C: New test.
* testsuite/g++.dg/mv6.C: New test.
From-SVN: r193204
PR tree-optimization/54986
* gimple-fold.c (canonicalize_constructor_val): Strip again all no-op
conversions on entry but add them back on exit if needed.
From-SVN: r193188
* gcc/final.c (final_scan_insn) [HAVE_cc0]: Handle all comparison
codes in non-jump and cmove insn.
* gcc/testsuite/gcc.dg/torture/fp-compare.c: New testcase.
From-SVN: r193187
2012-10-05 François Dumont <fdumont@gcc.gnu.org>
* include/ext/throw_allocator.h (__throw_value_base): Add move
semantic, not throwing.
(__throw_value_limit): Likewise.
(__throw_value_random): Likewise.
* testsuite/util/exception/safety.h: Add validation of C++11
methods emplace/emplace_front/emplace_back/emplace_hint.
* testsuite/util/testsuite_container_traits.h: Signal emplace
support on deque, forward_list, list and vector.
* testsuite/23_containers/deque/requirements/exception/
propagation_consistent.cc: Remove dg-do run fail.
From-SVN: r193184
* mode-switching.c (create_pre_exit): Force late switching if
__builtin_{apply,return} emitted a load that require mode,
other than MODE_EXIT.
Co-Authored-By: Vladimir Yakovlev <vladimir.b.yakovlev@intel.com>
From-SVN: r193182
* gcc.dg/const-1.c: Update.
* gcc.dg/pure-1.c: Update.
* tree-ssa-loop-niter.c (finite_loop_p): Revamp to be just wrapper of
max_loop_iterations.
From-SVN: r193175
2012-11-05 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/55151
* lra-constraints.c (process_alt_operands): Permit putting reg
value into memory. Increase reject for this case.
2012-11-05 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/55151
* gcc.dg/pr55151.c: New test.
From-SVN: r193170
2012-11-05 Dehao Chen <dehao@google.com>
* final.c (reemit_insn_block_notes): Do not change scope if insn
location is UNKNOWN_LOCATION.
From-SVN: r193169
* doc/md.texi (Defining Attributes): Document that we are defining
HAVE_ATTR_name macors as 1 for defined attributes, and as 0
for undefined special attributes.
* final.c (asm_insn_count, align_fuzz): Always define.
(insn_current_reference_address): Likewise.
(init_insn_lengths): Use if (HAVE_ATTR_length) instead of
#ifdef HAVE_ATTR_length.
(get_attr_length_1, shorten_branches, final): Likewise.
(final_scan_insn, output_asm_name): Likewise.
* genattr.c (gen_attr): Define HAVE_ATTR_name macros for
defined attributes as 1.
Remove ancient get_attr_alternative compatibility code.
For special purpose attributes not provided, define HAVE_ATTR_name
as 0.
In case no length attribute is given, provide stub definitions
for insn_*_length* functions, and also include insn-addr.h.
In case no enabled attribute is given, provide stub definition.
* genattrtab.c (write_length_unit_log): Always write a definition.
* hooks.c (hook_int_rtx_1, hook_int_rtx_unreachable): New functions.
* hooks.h (hook_int_rtx_1, hook_int_rtx_unreachable): Declare.
* lra-int.h (struct lra_insn_recog_data): Make member
alternative_enabled_p unconditional.
* lra.c (free_insn_recog_data): Use if (HAVE_ATTR_length) instead of
#ifdef HAVE_ATTR_length.
(lra_set_insn_recog_data): Likewise. Make initialization of
alternative_enabled_p unconditional.
(lra_update_insn_recog_data): Use #if instead of #ifdef for
HAVE_ATTR_enabled.
* recog.c [!HAVE_ATTR_enabled] (get_attr_enabled): Don't define.
(extract_insn): Check HAVE_ATTR_enabled.
(gate_handle_split_before_regstack): Use #if instead of
#if defined for HAVE_ATTR_length.
From-SVN: r193168
* ipa-inline.c (compute_uninlined_call_time,
compute_inlined_call_time): New functions.
(RELATIVE_TIME_BENEFIT_RANGE): New macro.
(relative_time_benefit): Rewrite.
(edge_badness): Rewrite path with guessed profile and estimated profile.
* ipa-inline.h (INLINE_HINT_declared_inline, INLINE_HINT_cross_module):
New hints.
(struct inline_summary): Add GROWTH filed.
* ipa-inline-analysis.c (dump_inline_hints): Update.
(reset_inline_summary): Update.
(dump_inline_summary): Update.
(will_be_nonconstant_predicate): Cleanup to use gimple_store_p and
gimple_assign_load_p predicates.
(estimate_node_size_and_time): Drop INLINE_HINT_declared_inline hint.
(simple_edge_hints): New function.
(do_estimate_edge_time): Return time of invocation of callee rather
than the time scaled by edge frequency; update hints code.
(do_estimate_edge_hints): Update.
(do_estimate_growth): Cleanup.
From-SVN: r193161
* tree-ssa-loop-niter.c (find_loop_niter): Remove just_once_each_iteration_p.
(maybe_lower_iteration_bound): Initialize not_executed_last_iteration to NULL
* tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables): Skip
just_once_each_iteration_p; record estimated bound when loop has only one
likely exit; test just_once_each_iteration_p before IV canon itself.
From-SVN: r193159
