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947 Commits

Author SHA1 Message Date
Chris Lattner
0acd73e11f Move methods out of .h file 
llvm-svn: 12001
 2004-02-29 19:02:39 +00:00
Chris Lattner
b5f0e162c7 Eliminate the distinction between "real" and "unreal" instructions 
llvm-svn: 11986
 2004-02-29 06:31:16 +00:00
Chris Lattner
8b7ac81d2e int64_t -> int 
llvm-svn: 11977
 2004-02-29 05:07:02 +00:00
Alkis Evlogimenos
ddfd27ff97 Rename member function to be consistent with the rest. 
llvm-svn: 11898
 2004-02-27 06:11:15 +00:00
Alkis Evlogimenos
63fda9c474 Make spiller push stores right after the definition of a register so 
that they are as far away from the loads as possible.

llvm-svn: 11895
 2004-02-27 04:51:35 +00:00
Alkis Evlogimenos
3093de5bfb Fix crash caused by passing register 0 to 
MRegisterInfo::isPhysicalRegister().

llvm-svn: 11894
 2004-02-27 01:52:34 +00:00
Alkis Evlogimenos
cff0fc180c Clear maps right after basic block is processed. 
llvm-svn: 11892
 2004-02-26 23:22:23 +00:00
Alkis Evlogimenos
b15631fcfa Uncomment assertions that register# != 0 on calls to 
MRegisterInfo::is{Physical,Virtual}Register. Apply appropriate fixes
to relevant files.

llvm-svn: 11882
 2004-02-26 22:00:20 +00:00
Chris Lattner
ac94c441b6 No need to clear the map here, it will always be empty 
llvm-svn: 11868
 2004-02-26 05:21:21 +00:00
Alkis Evlogimenos
af42cbf42f Fix bugs found with recent addition of assertions in 
MRegisterInfo::is{Physical,Virtual}Register.

llvm-svn: 11849
 2004-02-25 23:21:52 +00:00
Brian Gaeke
4f0a829a68 Great sparc renaming fallout IV: Sparc --> SparcV9. 
llvm-svn: 11844
 2004-02-25 22:09:36 +00:00
Alkis Evlogimenos
2caa729f02 Remove asssert since it is breaking cases that it shouldn't. 
llvm-svn: 11841
 2004-02-25 22:01:06 +00:00
Alkis Evlogimenos
f1516015af Add DenseMap template and actually use it for for mapping virtual regs 
to objects.

llvm-svn: 11840
 2004-02-25 21:55:45 +00:00
Chris Lattner
ccae3f6d60 Add an assertion 
llvm-svn: 11830
 2004-02-25 19:37:44 +00:00
Brian Gaeke
eae0364189 FunctionLiveVarInfo.h moved: include/llvm/CodeGen -> lib/Target/Sparc/LiveVar 
llvm-svn: 11804
 2004-02-24 19:46:00 +00:00
Alkis Evlogimenos
6d7150e9bb Move machine code rewriter and spiller outside the register 
allocator.

The implementation is completely rewritten and now employs several
optimizations not exercised before. For example for 164.gzip we have
997 loads and 699 stores vs the 1221 loads and 880 stores we have
before.

llvm-svn: 11798
 2004-02-24 08:58:30 +00:00
Alkis Evlogimenos
042f01039b Add predicates for checking if a virtual register has a physical 
register mapping or a stack slot mapping.

llvm-svn: 11795
 2004-02-24 06:30:36 +00:00
Alkis Evlogimenos
0d0db88889 Make enum private as it is an implementation detail. 
llvm-svn: 11782
 2004-02-23 23:49:40 +00:00
Alkis Evlogimenos
9344a740be Remove '4Virt' from member function names as it is obvious. 
llvm-svn: 11781
 2004-02-23 23:47:10 +00:00
Alkis Evlogimenos
d192266264 Refactor VirtRegMap out of RegAllocLinearScan as the first part of bug 
251 (providing a generic machine code rewriter/spiller).

llvm-svn: 11780
 2004-02-23 23:08:11 +00:00
Alkis Evlogimenos
34f28e5d3f Add number of spilled registers statistic. 
llvm-svn: 11759
 2004-02-23 18:45:32 +00:00
Chris Lattner
82e1a3657d Fix bugs in finegrainification 
llvm-svn: 11758
 2004-02-23 18:40:08 +00:00
Chris Lattner
1bf9dde4a1 Finegrainify namespacification 
llvm-svn: 11757
 2004-02-23 18:38:20 +00:00
Alkis Evlogimenos
82a1d7d30e Use MachineBasicBlock::getParent(). 
llvm-svn: 11756
 2004-02-23 18:36:38 +00:00
Alkis Evlogimenos
2863fbd178 Remove implementation of default constructor as it is useless now. 
llvm-svn: 11755
 2004-02-23 18:28:35 +00:00
Alkis Evlogimenos
9b103024ef Refactor rewinding code for finding the first terminator of a basic 
block into MachineBasicBlock::getFirstTerminator().

This also fixes a bug in the implementation of the above in both
RegAllocLocal and InstrSched, where instructions where added after the
terminator if the basic block's only instruction was a terminator (it
shouldn't matter for RegAllocLocal since this case never occurs in
practice).

llvm-svn: 11748
 2004-02-23 18:14:48 +00:00
Alkis Evlogimenos
50598d1135 Improved PhysRegTracker interface. RegAlloc lazily allocates the register tracker using a std::auto_ptr 
llvm-svn: 11738
 2004-02-23 06:10:13 +00:00
Alkis Evlogimenos
99af6ca36b Simplify iterator usage now that we have next(). Also don't pass iterators by reference now that MachineInstr* are in an ilist 
llvm-svn: 11732
 2004-02-23 04:12:30 +00:00
Alkis Evlogimenos
976f485826 Some code cleanups from Chris 
llvm-svn: 11724
 2004-02-23 01:57:39 +00:00
Alkis Evlogimenos
1525e120a6 Fix comments in PhysRegTracker and rename isPhysRegAvail to isRegAvail to be consistent with the other two 
llvm-svn: 11723
 2004-02-23 01:25:05 +00:00
Alkis Evlogimenos
ee3ef42726 Move LiveIntervals.h up to be the first included header 
llvm-svn: 11721
 2004-02-23 01:01:21 +00:00
Alkis Evlogimenos
ba2b9aec71 Pull PhysRegTracker out of RegAllocLinearScan as it can be used by other allocators as well 
llvm-svn: 11720
 2004-02-23 00:53:31 +00:00
Alkis Evlogimenos
850bd0819f Move LiveIntervals.h to lib/CodeGen since it shouldn't be exposed to other parts of the compiler 
llvm-svn: 11719
 2004-02-23 00:50:15 +00:00
Chris Lattner
5485375e5d Another bug fix for empty MBB's 
llvm-svn: 11716
 2004-02-22 19:37:31 +00:00
Chris Lattner
56a7886c8a Fix a bug where we were implicitly assuming that there would be at least 
one terminator instruction in each basic block.

llvm-svn: 11714
 2004-02-22 19:08:15 +00:00
Alkis Evlogimenos
ba33a0ab9b Print basic block boundaries in machine instruction debug output. 
llvm-svn: 11704
 2004-02-22 05:46:04 +00:00
Alkis Evlogimenos
32d12d31ae Abstract merging of ranges away from number of slots per instruction. 
Also make it less aggressive as the current implementation breaks in
some cases.

llvm-svn: 11696
 2004-02-22 04:05:13 +00:00
Alkis Evlogimenos
e39c21cc93 Make 'fold' statistic's description the same in both allocators. 
llvm-svn: 11687
 2004-02-21 18:07:33 +00:00
Alkis Evlogimenos
43431e117e Some more statistics improvements. 
llvm-svn: 11676
 2004-02-20 20:53:26 +00:00
Alkis Evlogimenos
6d57ed784f Disambiguate statistic descriptions. 
llvm-svn: 11675
 2004-02-20 20:46:49 +00:00
Alkis Evlogimenos
70f547d06e Rename statistic and add another one. 
llvm-svn: 11674
 2004-02-20 20:43:08 +00:00
Alkis Evlogimenos
168e4bf455 Fix crash in debug output. 
llvm-svn: 11659
 2004-02-20 06:41:12 +00:00
Alkis Evlogimenos
16744f2860 Fix instruction numbering in debug output. 
llvm-svn: 11655
 2004-02-20 06:29:51 +00:00
Alkis Evlogimenos
f32239a5c6 Too many changes in one commit: 
1. LiveIntervals now implement a 4 slot per instruction model. Load,
   Use, Def and a Store slot. This is required in order to correctly
   represent caller saved register clobbering on function calls,
   register reuse in the same instruction (def resues last use) and
   also spill code added later by the allocator. The previous
   representation (2 slots per instruction) was insufficient and as a
   result was causing subtle bugs.

2. Fixes in spill code generation. This was the major cause of
   failures in the test suite.

3. Linear scan now has core support for folding memory operands. This
   is untested and not enabled (the live interval update function does
   not attempt to fold loads/stores in instructions).

4. Lots of improvements in the debugging output of both live intervals
   and linear scan. Give it a try... it is beautiful :-)

In summary the above fixes all the issues with the recent reserved
register elimination changes and get the allocator very close to the
next big step: folding memory operands.

llvm-svn: 11654
 2004-02-20 06:15:40 +00:00
Alkis Evlogimenos
eed4727191 Fix RA::verifyAssignment() 
llvm-svn: 11629
 2004-02-19 19:24:17 +00:00
Chris Lattner
c37073f249 Fix problem fusing spill code into instructions: we didn't update the live 
variable information to take into account the change of instruction
address.

llvm-svn: 11628
 2004-02-19 18:34:02 +00:00
Chris Lattner
266206caed Fix an iterator invalidation problem. :( 
llvm-svn: 11627
 2004-02-19 18:32:29 +00:00
Chris Lattner
6b0030105e Add method to update livevar when an instruction moves 
llvm-svn: 11625
 2004-02-19 18:28:02 +00:00
Chris Lattner
8a9be6b652 Fix a __LONG__ term annoyance of mine: symbolic registers weren't being printed 
by operator<< on MachineInstr's, and looking up what register "24" is all of the
time was greatly annoying.

llvm-svn: 11623
 2004-02-19 16:17:08 +00:00
Chris Lattner
436ab13009 Add a MachineBasicBlock::getParent() method 
llvm-svn: 11622
 2004-02-19 16:13:54 +00:00