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36 Commits

Author SHA1 Message Date
Pete Cooper 1175945710 Change MCSchedModel to be a struct of statically initialized data. 
This removes static initializers from the backends which generate this data, and also makes this struct match the other Tablegen generated structs in behaviour

Reviewed by Andy Trick and Chandler C

llvm-svn: 216919
 2014-09-02 17:43:54 +00:00
Eric Christopher fc6de428c8 Have MachineFunction cache a pointer to the subtarget to make lookups 
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838
 2014-08-05 02:39:49 +00:00
Eric Christopher d913448b38 Remove the TargetMachine forwards for TargetSubtargetInfo based 
information and update all callers. No functional change.

llvm-svn: 214781
 2014-08-04 21:25:23 +00:00
Eric Christopher 9eff5178f1 Return false if we're not going to do anything. 
llvm-svn: 209455
 2014-05-22 17:49:33 +00:00
Eric Christopher 3470bbbd54 Fix compilation issues. 
llvm-svn: 209342
 2014-05-21 23:51:57 +00:00
Eric Christopher 6b0fcfee36 Make early if conversion dependent upon the subtarget and add 
a subtarget hook to enable. Unconditionally add to the pass pipeline
for targets that might want to use it. No functional change.

llvm-svn: 209340
 2014-05-21 23:40:26 +00:00
Chandler Carruth 1b9dde087e [Modules] Remove potential ODR violations by sinking the DEBUG_TYPE 
define below all header includes in the lib/CodeGen/... tree. While the
current modules implementation doesn't check for this kind of ODR
violation yet, it is likely to grow support for it in the future. It
also removes one layer of macro pollution across all the included
headers.

Other sub-trees will follow.

llvm-svn: 206837
 2014-04-22 02:02:50 +00:00
Craig Topper c0196b1b40 [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 
llvm-svn: 206142
 2014-04-14 00:51:57 +00:00
Craig Topper 4584cd54e3 [C++11] Add 'override' keyword to virtual methods that override their base class. 
llvm-svn: 203220
 2014-03-07 09:26:03 +00:00
Benjamin Kramer b6d0bd48bd [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 
Remove the old functions.

llvm-svn: 202636
 2014-03-02 12:27:27 +00:00
Jakob Stoklund Olesen aeb69a5481 Allow MachineTraceMetrics to be used when the model has no resources. 
It it still possible to extract information from itineraries, for
example.

llvm-svn: 178582
 2013-04-02 22:27:45 +00:00
Jakob Stoklund Olesen 8fbfc59164 Don't attempt MTM heuristics without a scheduling model present. 
This should fix the PPC buildbots.

llvm-svn: 178558
 2013-04-02 18:26:45 +00:00
Jakob Stoklund Olesen 1001673865 Remove wrong and unnecessary assertion. 
PHIs are allowed to have multiple operand pairs per predecessor, and
this code works just fine when it happens.

llvm-svn: 176734
 2013-03-08 23:00:13 +00:00
Jakob Stoklund Olesen bed165422f Add a getPassName() method. 
llvm-svn: 176669
 2013-03-07 23:55:51 +00:00
Jakob Stoklund Olesen 965665bb48 Move MachineTraceMetrics.h into include/llvm/CodeGen. 
Let targets use it.

llvm-svn: 172688
 2013-01-17 01:06:04 +00:00
Chandler Carruth ed0881b2a6 Use the new script to sort the includes of every file under lib. 
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
 2012-12-03 16:50:05 +00:00
Jakob Stoklund Olesen 9004798da8 Stop running the machine code verifier unconditionally. 
llvm-svn: 166646
 2012-10-25 00:05:39 +00:00
Jakob Stoklund Olesen 878d386b9a Get MCSchedModel directly from the subtarget. 
Not all targets have itineraries, but the subtarget always has an
MCSchedModel.

llvm-svn: 165236
 2012-10-04 17:30:43 +00:00
David Blaikie c8c2920a3f Tidy up a few more uses of MF.getFunction()->getName(). 
Based on CR feedback from r162301 and Craig Topper's refactoring in r162347
here are a few other places that could use the same API (& in one instance drop
a Function.h dependency).

llvm-svn: 162367
 2012-08-22 17:18:53 +00:00
Jakob Stoklund Olesen d0af1d9657 Count triangles and diamonds in early if-conversion. 
llvm-svn: 161783
 2012-08-13 21:03:27 +00:00
Jakob Stoklund Olesen 62a097d134 Delete dead typedef. 
llvm-svn: 161782
 2012-08-13 21:03:25 +00:00
Jakob Stoklund Olesen 83a927d84a Handle extra Tail predecessors in if-conversion. 
It is still possible to if-convert if the tail block has extra
predecessors, but the tail phis must be rewritten instead of being
removed.

llvm-svn: 161781
 2012-08-13 20:49:04 +00:00
Jakob Stoklund Olesen bc55bfde03 Add a proper if-conversion cost model. 
Detect when there is not enough available ILP, so if-conversion can't
speculate instructions for free.

Compute the lengthening of the critical path when inserting a select
instruction that depends on the condition as well as both sides of the
if.

Reject conversions that would stretch the critical path by more than
half a mispredict penalty.

llvm-svn: 161713
 2012-08-10 22:27:31 +00:00
Jakob Stoklund Olesen 0a99062cf6 Add getTPred() and getFPred() functions. 
They identify the PHI predecessors in both diamonds and triangles.

llvm-svn: 161689
 2012-08-10 20:19:17 +00:00
Jakob Stoklund Olesen fa8a26f9df Heed -stress-early-ifcvt. 
llvm-svn: 161513
 2012-08-08 18:24:23 +00:00