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854 Commits

Author SHA1 Message Date
Chris Lattner e62a2a76e5 Minor cleanups 
llvm-svn: 7619
 2003-08-05 22:03:27 +00:00
Chris Lattner b05d3508d6 Physical registers no longer live in the regsUsed set for each machine instr 
llvm-svn: 7618
 2003-08-05 21:55:58 +00:00
Chris Lattner 020b544cbc Do not insert physical regsiters into the regsUsed set 
llvm-svn: 7617
 2003-08-05 21:55:20 +00:00
Chris Lattner cd4f4320b0 All callers of these methods actually wanted them to preserve the flags, 
so get rid of the def/use parameters that were getting passed in.

**** This now changes the semantics of these methods to preserve the flags,
     not clobber them!

llvm-svn: 7602
 2003-08-05 16:58:46 +00:00
Chris Lattner 92a199dca7 Fix bugs handling ESP in alloca references 
llvm-svn: 7591
 2003-08-05 04:13:58 +00:00
Chris Lattner 506fa6843e Revert previous change, and be really anal about what physical registers can do. 
llvm-svn: 7588
 2003-08-05 00:49:09 +00:00
Chris Lattner 4b637cc666 Don't bother calculating info unless its needed. May reduce number of stack slots created. 
llvm-svn: 7584
 2003-08-04 23:42:37 +00:00
Chris Lattner 815b85e3ba * Fix spelling of 'necessary' 
* Add a lot more DEBUG output, which is better structured than before
* Fix bug: Jello/2003-08-04-PhysRegLiveFailure.llx

llvm-svn: 7583
 2003-08-04 23:36:39 +00:00
Chris Lattner 41a894de77 Simplify code, eliminating the need for the X86 isVoid target instr flag 
llvm-svn: 7534
 2003-08-03 21:51:45 +00:00
Chris Lattner 74e4e9b44f Set debug types 
llvm-svn: 7533
 2003-08-03 21:47:31 +00:00
Chris Lattner 1789d23990 Remove using decl 
llvm-svn: 7531
 2003-08-03 20:24:29 +00:00
Chris Lattner 6cce665888 Wrap at 80 columns 
llvm-svn: 7503
 2003-08-03 13:49:03 +00:00
Chris Lattner 1007f033d4 Move DEBUG to Debug.h 
llvm-svn: 7497
 2003-08-01 22:21:34 +00:00
Vikram S. Adve 9143f1962e All constant-evaluation code now unified into 
TargetInstrInfo::ConvertConstantToIntType().

llvm-svn: 7390
 2003-07-29 19:50:12 +00:00
Vikram S. Adve c9cb319bcb 1. Bug fix: Don't use branch operand reg. as temp. reg. when 
spilling values used by an instruction in the delay slot of the branch
   (which will eventually be moved before the branch).
2. Bug fix:  Delete the delay slot instr, not the branch instr, when
   moving delay slot instr. out!!!!
3. Move code to insert caller-saves moved here from SparcRegInfo:
   it is now machine-independent.

llvm-svn: 7389
 2003-07-29 19:49:21 +00:00
Vikram S. Adve e2ef34a818 Add const version of getLiveRangeForValue(). 
llvm-svn: 7386
 2003-07-29 19:38:22 +00:00
Vikram S. Adve 91e75d87d2 Code to insert caller-saves moved here from SparcRegInfo: it is now 
machine-independent.
Fix problem with using branch operand reg. as temp. reg. when
spilling values used by an instruction in the delay slot of the branch
(which will eventually be moved before the branch).

llvm-svn: 7385
 2003-07-29 19:37:41 +00:00
Chris Lattner 0c8de4bfca Making this code const-correct would be a pain, so I'll hack it. 
llvm-svn: 7350
 2003-07-26 23:29:51 +00:00
Chris Lattner 414832fea6 Const correctness fixes 
llvm-svn: 7349
 2003-07-26 23:24:56 +00:00
Chris Lattner 0ed86aca71 Be const correct 
llvm-svn: 7348
 2003-07-26 23:23:41 +00:00
Chris Lattner 1316383267 Hrm, another necesary one :( 
llvm-svn: 7347
 2003-07-26 23:22:19 +00:00
Chris Lattner 824398ec6d Remove #include 
llvm-svn: 7342
 2003-07-26 23:01:04 +00:00
Chris Lattner 981e585021 Remove extraneous #includes 
llvm-svn: 7341
 2003-07-26 23:00:29 +00:00
Vikram S. Adve 45766ab682 (1) Change the way unused regs. are marked and found to consider regType 
info (since multiple reg types may share the same reg class).
(2) Remove machine-specific regalloc. methods that are no longer needed.
    In particular, arguments and return value from a call do not need
    machine-specific code for allocation.
(3) Rename TargetRegInfo::getRegType variants to avoid unintentional
    overloading when an include file is omitted.

llvm-svn: 7329
 2003-07-25 21:06:09 +00:00
Vikram S. Adve abcd8d75ff Remove unused field. Change the way unused regs. are marked and 
found to consider regType info (since multiple reg types may share
the same reg class, e.g., single and double on Sparc).

llvm-svn: 7327
 2003-07-25 21:00:13 +00:00
Chris Lattner 79f22fe02f Remove unnecessary casts 
llvm-svn: 7250
 2003-07-23 15:17:51 +00:00
Chris Lattner b976da9ecf Random cleanups 
llvm-svn: 7247
 2003-07-23 14:59:40 +00:00
Chris Lattner 0470412961 Remove using decl 
llvm-svn: 7246
 2003-07-23 14:55:59 +00:00
Vikram S. Adve e2e50f2880 Values stored in CallArgsDescriptor cannot be const. 
llvm-svn: 7156
 2003-07-10 19:46:15 +00:00
Vikram S. Adve abf331db03 isMarkedForSpill() should be const. 
llvm-svn: 7155
 2003-07-10 19:45:28 +00:00
Vikram S. Adve 689adb19b0 Change interface to MachineInstr::substituteValue to specify more precisely 
which args can be substituted: defsOnly, defsAndUses or usesOnly.

llvm-svn: 7154
 2003-07-10 19:45:07 +00:00
Vikram S. Adve 39587d6264 Print out all neighbors in interference graph, not just higher-numbered ones. 
llvm-svn: 7153
 2003-07-10 19:43:33 +00:00
Vikram S. Adve 5224b19deb Several fixes to handling of int CC register: 
(1) An int CC live range must be spilled if there are any interferences,
    even if no other "neighbour" in the interf. graph has been allocated
    that reg. yet.  This is actually true of any class with only one reg!

(2) SparcIntCCRegClass::colorIGNode sets the color even if the LR must
    be spilled so that the machine-independent spill code doesn't have to
    make the machine-dependent decision of which CC name to use based on
    operand type: %xcc or %icc.  (These are two halves of the same
register.)

(3) LR->isMarkedForSpill() is no longer the same as LR->hasColor().
    These should never have been the same, and this is necessary now for #2.

(4) All RDCCR and WRCCR instructions are directly generated with the
    phony number for %ccr so that EmitAssembly/EmitBinary doesn't have to
    deal with this.

llvm-svn: 7152
 2003-07-10 19:42:55 +00:00
Vikram S. Adve 3bb921e8df Choose register instead of immediate for ConstantExpr in ChooseRegOrImmed. 
llvm-svn: 7112
 2003-07-06 20:33:21 +00:00
Vikram S. Adve 1fce4cfa95 Minor beautification: fold a couple of lines of code. 
llvm-svn: 7054
 2003-07-02 01:24:00 +00:00
Vikram S. Adve fa1dde06aa A def. operand of a machine instruction may be an ordinary Value*, 
not just an Instruction*, at least in one unfortunate case:
the first operand to the va_arg instruction.
Modify ValueToDefVecMap to map from Value*, not Instruction*.

llvm-svn: 7052
 2003-07-02 01:16:01 +00:00
John Criswell 3ef61afb76 Merged in autoconf branch. This provides configuration via the autoconf 
system.

llvm-svn: 7014
 2003-06-30 21:59:07 +00:00
Chris Lattner 52de05c6b3 Remove a ton of extraneous #includes 
llvm-svn: 6842
 2003-06-22 03:08:05 +00:00
Chris Lattner 55491774bb Actually, change it to use explicit new/delete, which is more likely to be 
optimized INTO an alloca

llvm-svn: 6727
 2003-06-16 22:29:09 +00:00
Chris Lattner 5b7e3cae42 Remove two using decls 
Remove usage of alloca

llvm-svn: 6725
 2003-06-16 22:18:28 +00:00
Brian Gaeke 7a719ed20c Isolate machine-dependent use of <alloca.h> in "Support/Alloca.h", 
so that we can easily change its use to be conditional on the result of
an autoconf test later.

llvm-svn: 6723
 2003-06-16 21:54:01 +00:00
John Criswell cfac736363 Included assert.h so that the code compiles under newer versions of GCC. 
llvm-svn: 6682
 2003-06-11 14:01:36 +00:00
Guochun Shi c40f66c928 add some comments 
add a function ModuloScheduling::dumpFinalSchedule() to print out final schedule

llvm-svn: 6677
 2003-06-10 20:04:30 +00:00
Guochun Shi f6b88e55ed add an brief instruction what this pass is 
llvm-svn: 6676
 2003-06-10 20:03:39 +00:00
Guochun Shi d2656536f5 a simple introduction to this pass 
llvm-svn: 6675
 2003-06-10 20:02:16 +00:00
Guochun Shi 9766f8c3a2 cleaned code 
add some comments

llvm-svn: 6674
 2003-06-10 19:09:00 +00:00
Guochun Shi 2ee8c115d8 delete useless functions 
add comment

llvm-svn: 6673
 2003-06-08 23:16:07 +00:00
Guochun Shi 1ecd0e0228 change DEBUG to DEBUG_PRINT 
llvm-svn: 6672
 2003-06-08 20:40:47 +00:00
Misha Brukman 366494ab0d Do not hastily change the Opcode from 'r' to 'i' type if we're not actually 
SETTING the operand to be an immediate or have verified that one of the operands
is really a SignExtended or Unextended immediate value already, which warrants
an 'i' opcode.

llvm-svn: 6662
 2003-06-07 02:34:43 +00:00
Chris Lattner a7c5e0fba3 Fix bug: Jello/2003-06-04-bzip2-bug.ll 
llvm-svn: 6624
 2003-06-05 17:15:04 +00:00
Misha Brukman 4e7bad01ff I have finally seen the light. The code to change the opcode must live higher in 
the loop, and in both cases. In the first case, it is a VReg that is a constant
so it may be actually converted to a constant. In the second case, it is already
a constant, but then if it doesn't change its type (e.g. to become a register
and have the value loaded from memory if it is too large to live in its
instruction field), we must change the opcode BEFORE the 'continue', otherwise
we miss the opportunity.

llvm-svn: 6602
 2003-06-04 04:54:06 +00:00
Misha Brukman a6c3f896da Pass through the emitConstantPool() call to the real emitter. 
llvm-svn: 6590
 2003-06-03 20:00:49 +00:00
Misha Brukman 0cf667165e Moved code to modify the opcode from 'reg' to 'imm' form to a more logical place. 
llvm-svn: 6563
 2003-06-03 03:18:20 +00:00
Misha Brukman e7021ad033 Moved FInfo.cpp to lib/Target/Sparc as it is Sparc-specific. 
llvm-svn: 6554
 2003-06-02 23:27:09 +00:00
Chris Lattner 17776f432e Minor cleanups. 
This pass should be moved to lib/Target/Sparc since it's sparc specific
It also needs a file comment.

llvm-svn: 6553
 2003-06-02 22:57:41 +00:00
Chris Lattner 396680793c Remove usage of noncopyable classes to clean up doxygen output. 
In particular these classes are the last that link the noncopyable classes
with the hash_map, vector, and list classes.

llvm-svn: 6552
 2003-06-02 22:45:07 +00:00
Chris Lattner a0a3ef8d21 Add #include 
llvm-svn: 6550
 2003-06-02 22:05:13 +00:00
Misha Brukman 155bdf6993 Removed a useless ofstream. 
llvm-svn: 6547
 2003-06-02 20:49:09 +00:00
Guochun Shi 8dfdb0f68e compiled with the new SchedGraphCommon 
llvm-svn: 6545
 2003-06-02 17:48:56 +00:00
Misha Brukman 6fd0681010 Remove spurious assert() 
llvm-svn: 6529
 2003-06-02 04:10:41 +00:00
Chris Lattner 0c1475caf0 Changes to be compatible with MachineCodeEmitter.h 
llvm-svn: 6515
 2003-06-01 23:22:11 +00:00
Vikram S. Adve 24ce4d8eb8 Minor changes. 
llvm-svn: 6470
 2003-05-31 07:41:54 +00:00
Vikram S. Adve ad83684c77 Added MachineCodeForInstruction object as an argument to 
TmpInstruction constructors because every TmpInstruction object has
to be registered with a MachineCodeForInstruction to prevent leaks.
This simplifies the user's code.

llvm-svn: 6469
 2003-05-31 07:41:24 +00:00
Vikram S. Adve c468882155 Allow explicit physical registers for implicit operands. 
llvm-svn: 6468
 2003-05-31 07:39:06 +00:00
Vikram S. Adve 465f9b6738 Changes to allow explicit physical register arguments that have been 
preallocated.  While reg-to-reg dependences were already handled, this
change required new code for adding edges to/from call instructions.
This was part of the extensive changes to the way code generation occurs
for function call arguments and return values.
See log for CodeGen/PhyRegAlloc.cpp.

llvm-svn: 6467
 2003-05-31 07:37:05 +00:00
Vikram S. Adve a83804a29a Extensive changes to the way code generation occurs for function 
call arguments and return values:
Now all copy operations before and after a call are generated during
selection instead of during register allocation.
The values are copied to virtual registers (or to the stack), but
in the former case these operands are marked with the correct physical
registers according to the calling convention.
Although this complicates scheduling and does not work well with
live range analysis, it simplifies the machine-dependent part of
register allocation.

llvm-svn: 6465
 2003-05-31 07:32:01 +00:00
Misha Brukman 736e6172dc When converting virtual registers to immediate constants, change the opcode. 
llvm-svn: 6452
 2003-05-30 20:36:27 +00:00
Misha Brukman 94908b010e Added saveBBreferences() for BasicBlock resolution. 
llvm-svn: 6451
 2003-05-30 20:32:45 +00:00
Guochun Shi 856ee9154f so far everything compiles 
llvm-svn: 6423
 2003-05-30 00:17:09 +00:00
Misha Brukman df88104198 Correctly write out binary data as chars, before they're cast to ints. 
llvm-svn: 6385
 2003-05-28 18:27:19 +00:00
Misha Brukman cbd4678663 Added a debugging code emitter that prints code to a file, debug to std::cerr, 
and passes the real code to a memory-outputting code emitter. This may be
removed at a later point in development.

llvm-svn: 6379
 2003-05-27 22:43:19 +00:00
Vikram S. Adve 7366fa1aa6 (1) Added special register class containing (for now) %fsr. 
Fixed spilling of %fcc[0-3] which are part of %fsr.

(2) Moved some machine-independent reg-class code to class TargetRegInfo
    from SparcReg{Class,}Info.

(3) Renamed MachienOperand::opIsDef to MachineOperand::opIsDefOnly()
    and related functions and flags.  Fixed several bugs where only
    "isDef" was being checked, not "isDefAndUse".

llvm-svn: 6341
 2003-05-27 00:05:23 +00:00
Misha Brukman 7ca74ef252 Cleaned up code layout. No functional changes. 
llvm-svn: 6304
 2003-05-22 21:49:18 +00:00
Misha Brukman b674a1b95b Kill `using' directives. 
llvm-svn: 6301
 2003-05-22 21:24:35 +00:00
Chris Lattner 1103e8349d Use a kill, not a dead definition, update comment 
llvm-svn: 6131
 2003-05-12 17:37:30 +00:00
Chris Lattner 51ae817fd6 * Keep LiveVariable information more up-to-date and consistent 
* *** Finally mark values that are inputs to PHIs as killed when appropriate.
   This should make the generated code quite a bit better.  For example, the
   local-ra will not have to spill PHI inputs at the end of predecessor BB's
   anymore.

llvm-svn: 6117
 2003-05-12 14:28:28 +00:00
Chris Lattner 2e50ac75a0 Fix bug where we could iterate off the end of a basic block 
llvm-svn: 6116
 2003-05-12 14:26:38 +00:00
Chris Lattner 584bae4733 * Keep the BBMap around as long as the pass is live 
* Change getVarInfo to take real virtual register numbers and offset them
  itself.  This has caused me so much grief, it's not even funny.

llvm-svn: 6115
 2003-05-12 14:24:00 +00:00
Chris Lattner bd854dafec Fix N^2 algorithm 
llvm-svn: 6112
 2003-05-12 04:08:54 +00:00
Chris Lattner 00ee7cfa83 * Fix several comments 
* Update LiveVar info better, fixing bug: Jello/2003-05-11-PHIRegAllocBug.ll

llvm-svn: 6110
 2003-05-12 03:55:21 +00:00
Chris Lattner 5a78ee85c6 Fix tab infestation! 
llvm-svn: 6109
 2003-05-12 03:54:14 +00:00
Chris Lattner 2274c71150 Allow const functions 
llvm-svn: 6056
 2003-05-09 03:27:41 +00:00
Chris Lattner c9a4f4c6b4 Add methods for stub function generation 
llvm-svn: 6054
 2003-05-08 21:54:18 +00:00
Chris Lattner 5ab42e5739 Add a vector to keep track of which registers are allocatable. Remove FIXMEs 
llvm-svn: 6015
 2003-05-07 20:08:36 +00:00
Chris Lattner 9eb2172176 Re-add gross hack, it's still necessary. :( 
llvm-svn: 6012
 2003-05-06 21:44:54 +00:00
Chris Lattner 824698b891 Remove hideously nasty hack 
llvm-svn: 6011
 2003-05-06 21:32:39 +00:00
Misha Brukman e842da3dcc Debug output should go to cerr, not cout, because that's where bytecode goes. 
llvm-svn: 6002
 2003-05-04 22:51:30 +00:00
Chris Lattner f22d1f5912 Fix a bug which occurred with empty basic blocks 
llvm-svn: 5982
 2003-05-02 18:44:42 +00:00
Chris Lattner f641fd08bc Minor cleanup 
llvm-svn: 5976
 2003-05-01 21:18:47 +00:00
Chris Lattner 6ee2cf5d89 Remove unneccesary &* 
llvm-svn: 5871
 2003-04-23 16:36:11 +00:00
Misha Brukman 3b78995848 Just some code beautification changes I had sitting around in my tree. 
llvm-svn: 5859
 2003-04-22 23:00:08 +00:00
Misha Brukman a45606276d Fixed compilation errors, command-line argument declarations, cleaned up code to 
look nicer and removed useless stuff.

Also renamed a few variables, moved them into namespaces, converted outputting
to a file into a print to std::cerr with a DEBUG() guard, as all passes should
do anyway.

No functional changes have been made. However, this code now compiles.

llvm-svn: 5769
 2003-04-10 19:19:23 +00:00
Misha Brukman 218a732724 Made the code readable: 
* Lines must be wrapped at 80 chars. This is a hard limit.
* Consistent style on functions, braces, if, for, etc. Code must be readable.

No functional changes have been made, even though I added a new typedef.

llvm-svn: 5768
 2003-04-09 21:51:34 +00:00
Guochun Shi b250dc6909 change the include file names and some class names to make it compile 
llvm-svn: 5764
 2003-04-06 23:56:19 +00:00
Guochun Shi 45d8f3279e *** empty log message *** 
llvm-svn: 5755
 2003-03-27 17:57:44 +00:00
Chris Lattner eb45c982ae Print machine frame objects with the frame offset intrinsic to the machine 
llvm-svn: 5329
 2003-01-16 18:35:57 +00:00
Chris Lattner 176866caed Fix problems with empty basic blocks 
llvm-svn: 5326
 2003-01-16 18:06:43 +00:00
Chris Lattner c52c791806 Arg, fix bugs in previous checkin... 
llvm-svn: 5322
 2003-01-16 02:24:20 +00:00
Chris Lattner 910ee768d0 Add assertion 
llvm-svn: 5321
 2003-01-16 02:22:08 +00:00
Chris Lattner 86ee825bce * Insert prolog/epilog code before rewriting indexes 
* Fix calculation of frame offsets when there is an offset.

llvm-svn: 5318
 2003-01-15 22:52:34 +00:00
Chris Lattner dea36ca100 Move sparc specific code into the Sparc backend 
llvm-svn: 5317
 2003-01-15 21:36:50 +00:00
Chris Lattner 1ff57d914c Adjust to new interfaces 
llvm-svn: 5314
 2003-01-15 21:14:01 +00:00
Chris Lattner e46165fcf0 Move headers around 
llvm-svn: 5312
 2003-01-15 21:02:16 +00:00
Chris Lattner 14802a539d Header is moved into local directory 
llvm-svn: 5311
 2003-01-15 21:00:02 +00:00
Chris Lattner 5f738161ae Fix bug in previous checkin 
llvm-svn: 5310
 2003-01-15 20:32:15 +00:00
Chris Lattner c75dc4856e Add new method 
llvm-svn: 5309
 2003-01-15 20:28:36 +00:00
Chris Lattner a23969b669 #include RegClass.h explicitly 
llvm-svn: 5307
 2003-01-15 19:57:07 +00:00
Chris Lattner 19a7cb2240 Remvoe dependency on RegClass.h 
llvm-svn: 5306
 2003-01-15 19:56:21 +00:00
Chris Lattner d840ccd2e0 Prune #includes 
llvm-svn: 5303
 2003-01-15 19:48:13 +00:00
Chris Lattner 46d4d231c5 Minor changes 
llvm-svn: 5302
 2003-01-15 19:47:53 +00:00
Chris Lattner 5da071b265 Remove obsolete ctor 
llvm-svn: 5301
 2003-01-15 19:47:02 +00:00
Chris Lattner 4f7088f6a2 Remove dead code 
llvm-svn: 5298
 2003-01-15 19:22:38 +00:00
Chris Lattner 8128936c33 Use buildmi not MI ctor directly 
llvm-svn: 5293
 2003-01-15 18:08:07 +00:00
Chris Lattner 24c1d5e551 Rename llvm/Analysis/LiveVar/FunctionLiveVarInfo.h -> llvm/CodeGen/FunctionLiveVarInfo.h 
llvm-svn: 5284
 2003-01-14 23:05:08 +00:00
Chris Lattner de1d729747 Move llvm/Analysis/LiveVar/ValueSet.h to CodeGen/ValueSet.h 
llvm-svn: 5282
 2003-01-14 22:56:37 +00:00
Chris Lattner b4d58d7f9e Rename MachineInstrInfo -> TargetInstrInfo 
llvm-svn: 5272
 2003-01-14 22:00:31 +00:00
Chris Lattner cab0b442f2 New files 
llvm-svn: 5262
 2003-01-13 20:01:16 +00:00
Chris Lattner cbedb8b400 * Use the PHI Elimination pass 
llvm-svn: 5220
 2003-01-13 00:26:08 +00:00
Chris Lattner bfa5319eb2 * Convert to use LiveVariable analysis 
* Convert to use PHIElimination pass
* Don't spill values which have just been reloaded (big win reducing spills)
* Add experimental support for eliminating spills before TwoAddress
  instructions.  It currently is broken so it is #ifdef'd out.
* Use new "is terminator" flag on instructions instead of looking for
  branches and returns explicitly.

llvm-svn: 5219
 2003-01-13 00:25:40 +00:00
Chris Lattner 8d2a07ab2f Convert to MachineFunctionPass 
llvm-svn: 5218
 2003-01-13 00:23:41 +00:00
Chris Lattner a2ad874c95 Add support for 3 new forms of MachineOperand 
llvm-svn: 5217
 2003-01-13 00:23:24 +00:00
Chris Lattner c6807e8f5d Add support for constant pool 
Add helper methods for MachineFrameInfo

llvm-svn: 5216
 2003-01-13 00:23:03 +00:00
Chris Lattner 6178ee9b36 Add support for global address by string and constant pool values 
llvm-svn: 5215
 2003-01-13 00:22:37 +00:00
Chris Lattner f9781b59ab More renamings of Target/Machine*Info to Target/Target*Info 
llvm-svn: 5204
 2002-12-29 03:13:05 +00:00
Chris Lattner 42d59219c7 Rename MachineOptInfo to TargetoptInfo 
Rename MachineCacheInfo to TargetCacheInfo

llvm-svn: 5203
 2002-12-29 02:50:35 +00:00
Chris Lattner ca4362fee7 Rename FunctionFrameInfo to MachineFrameInfo 
llvm-svn: 5200
 2002-12-28 21:08:26 +00:00
Chris Lattner 871e591e34 Rename MachineFrameInfo to TargetFrameInfo.h 
llvm-svn: 5199
 2002-12-28 21:00:25 +00:00
Chris Lattner c8b36e6362 Initial checkin of Prolog/Epilog code inserter, which is an important part 
of the abstract frame representation

llvm-svn: 5198
 2002-12-28 20:43:30 +00:00
Chris Lattner bf9d12ac8b * Convert to be a MachineFunctionPass instance 
* Use new FunctionFrameInfo object to manage stack slots instead of doing
  it directly
* Adjust to new MRegisterInfo API
* Don't take a TM as a ctor argument
* Don't keep track of which callee saved registers are modified
* Don't emit prolog/epilog code or spill/restore code for callee saved regs
* Use new allocation_order_begin/end iterators to simplify dramatically the
  logic for picking registers to allocate
* Machine PHI nodes can no longer contain constant arguments

* Use a bitvector to keep track of registers used instead of a set
* Fix problem where explicitly referenced registers would be added to
  regsused set and never removed

llvm-svn: 5196
 2002-12-28 20:42:14 +00:00
Chris Lattner b4e4111d75 * Convert to be a MachineFunctionPass instance 
* Use new FunctionFrameInfo object to manage stack slots instead of doing
  it directly
* Adjust to new MRegisterInfo API
* Don't take a TM as a ctor argument
* Don't keep track of which callee saved registers are modified
* Don't emit prolog/epilog code or spill/restore code for callee saved regs
* Use new allocation_order_begin/end iterators to simplify dramatically the
  logic for picking registers to allocate
* Machine PHI nodes can no longer contain constant arguments

llvm-svn: 5195
 2002-12-28 20:40:43 +00:00
Chris Lattner fd1ecadb1d * Add printing support for FrameIndex operands 
llvm-svn: 5194
 2002-12-28 20:37:37 +00:00
Chris Lattner 32525647e1 * A bunch of functionality and data was removed from MachineFunction and put 
into a new MachineFunctionInfo class
* Implement new FunctionFrameInfo class

llvm-svn: 5193
 2002-12-28 20:37:16 +00:00
Chris Lattner 0733616ec7 Frame info moved out of MachineFunction into a seperate object 
llvm-svn: 5192
 2002-12-28 20:35:34 +00:00
Chris Lattner 42714ec1bd Adjust to simpler spill interface 
Only spill and reload caller saved registers that are actually modified.

llvm-svn: 5145
 2002-12-25 05:05:46 +00:00
Chris Lattner ee73450749 Adjustments to work with the simpler spill interface 
llvm-svn: 5144
 2002-12-25 05:04:20 +00:00
Chris Lattner 448fb45b2d Remove dependency on SSARegMap.h by MachineFunction.h 
llvm-svn: 5143
 2002-12-25 05:03:22 +00:00
Chris Lattner 763729c5cd Substantial fixes to live range handling, fixing several problems, getting 
strtol to not miscompile, and fixing bug: 2002-12-23-LocalRAProblem.llx

llvm-svn: 5132
 2002-12-24 00:04:55 +00:00
Chris Lattner 095eac8109 Fix compilation on GCC 2.96 
llvm-svn: 5113
 2002-12-23 23:44:04 +00:00
Chris Lattner d4627093de * Fix several register aliasing bugs 
* Add a new option to eliminate spilling of registers that are only used
  within a basic block.

llvm-svn: 5106
 2002-12-18 08:14:26 +00:00
Chris Lattner dc451c6d27 Implicit defs/uses list may be empty. 
llvm-svn: 5103
 2002-12-18 01:11:14 +00:00
Chris Lattner ac5f3b3ed3 Use new reginfo interface 
llvm-svn: 5099
 2002-12-17 04:19:40 +00:00
Chris Lattner 0ea32b8dd3 Add prolog/epilog spills/reloads to counters 
Move X86 specific alignment gunk to X86 files

llvm-svn: 5096
 2002-12-17 03:16:10 +00:00
Chris Lattner 4664bd5798 Fix many bugs, regallocator now saves callee-save registers instead of target 
llvm-svn: 5093
 2002-12-17 02:50:10 +00:00
Chris Lattner 0129b86d55 * Fix a gross X86 hack that was intended to avoid allocating SP and BP 
* Implement register alias set support

llvm-svn: 5082
 2002-12-16 17:44:42 +00:00
Chris Lattner 1d84f0a461 Keep the stack frame aligned. 
llvm-svn: 5081
 2002-12-16 17:42:40 +00:00
Chris Lattner 101b8cd9b6 Initial checkin of "local" register allocator. Bugs are still present. 
llvm-svn: 5078
 2002-12-16 16:15:28 +00:00
Chris Lattner c63d63a7c7 Rename createSimpleX86RegisterAllocator to createSimpleRegisterAllocator. 
Remvoe some dead code

llvm-svn: 5070
 2002-12-16 14:37:00 +00:00
Chris Lattner bc1e6700eb Some simpliciations to the spill/reload interface 
llvm-svn: 5067
 2002-12-15 23:01:26 +00:00
Chris Lattner 4e560ee65b Simplify PHI node elimination significantly by doing it as a prepass to 
register allocation

llvm-svn: 5066
 2002-12-15 22:39:53 +00:00
Chris Lattner 292083aaf5 Variety of small or trivial simplifications to the code, completely eliminated 
the dependence on PhysRegClassMap

llvm-svn: 5064
 2002-12-15 22:19:19 +00:00
Chris Lattner 2af545d034 Remove unused savePhysRegToStack method 
llvm-svn: 5061
 2002-12-15 21:33:51 +00:00
Chris Lattner ed594b6b20 Localize a map, remove another 
llvm-svn: 5060
 2002-12-15 21:24:30 +00:00
Chris Lattner 1499e5a92c Give simple reg allocator a nice Pass Name 
llvm-svn: 5058
 2002-12-15 21:13:12 +00:00
Chris Lattner 2979a85984 Add a big assert making sure 2 address instructions are formed right 
llvm-svn: 5057
 2002-12-15 21:02:20 +00:00
Chris Lattner 02e835bf9a Fix a problem that occurs when PHI nodes have multiple entries for the same predecessor 
llvm-svn: 5055
 2002-12-15 20:48:03 +00:00
Chris Lattner dfa238f665 Grab bag of minor cleanups. Export some statistics about the number of 
spills and reloads emitted

llvm-svn: 5054
 2002-12-15 20:36:09 +00:00
Chris Lattner f895418b47 Implement printing of MBB arguments 
llvm-svn: 5053
 2002-12-15 20:35:25 +00:00
Chris Lattner e2533336f5 Simplify interfaces used by regalloc to insert code 
llvm-svn: 5052
 2002-12-15 20:06:35 +00:00
Chris Lattner c1c7cc290f * Simplify code a bit by breaking the PHI node handling stuff out into a seperate 
function from normal regalloc code
* Make the regalloc for a block a function instead of part of runOnMachineBB, which
  makes it easier to see what's going on in runOnMBB.

llvm-svn: 5051
 2002-12-15 19:51:14 +00:00
Chris Lattner f2acd842b4 * Remove some unneccesary instance variables 
* Make allocateStackSpaceFor only allocate the right amount of space

llvm-svn: 5048
 2002-12-15 19:07:34 +00:00
Chris Lattner b772cd05c5 pull inverse reg class mapping into a class that is sharable and out of the 
target register description classes.

llvm-svn: 5045
 2002-12-15 18:38:59 +00:00
Chris Lattner cf1955cb16 Prune #includes 
llvm-svn: 5044
 2002-12-15 18:19:24 +00:00
Chris Lattner 1af3af463a Remove extraneous #includes, perform FIXME 
llvm-svn: 5043
 2002-12-15 18:15:24 +00:00
Chris Lattner 477af9d0fa Fix borkness with not using MachineBasicBlocks in PHI nodes 
llvm-svn: 5035
 2002-12-15 08:02:51 +00:00
Misha Brukman a1aa29b125 Fixed a bug where moves due to phis were being neglected. 
llvm-svn: 5019
 2002-12-13 12:33:31 +00:00
Misha Brukman 86ca8840a1 Need to insert all moves due to PHI nodes before *ALL* jumps in a predecessor 
basic block, as there could be multiple.

llvm-svn: 5016
 2002-12-13 11:55:59 +00:00
Misha Brukman 35a358d981 This should be more correct: invalidates physical registers that are used in 
an instruction to avoid using them to allocate to other virtual registers.

llvm-svn: 5013
 2002-12-13 11:33:22 +00:00
Misha Brukman 89ff3fbcd6 Fixed bug with running out of registers. Also, reinstated namespace which 
disappeared during the last checkin.

llvm-svn: 5007
 2002-12-13 10:42:31 +00:00
Misha Brukman a739167305 This should handle register allocating PHI nodes. 
llvm-svn: 5002
 2002-12-13 09:54:36 +00:00
Misha Brukman 4ef74c8079 Start allocating stack space at [ebp-4] to not overwrite the return address. 
Also make all loads & stores 4-byte aligned for performance. ;)

llvm-svn: 4982
 2002-12-13 04:34:02 +00:00
Misha Brukman 260dbc79fc Take advantage of our knowledge of 2-address X86 instructions and 
register-allocated them appropriately.

llvm-svn: 4976
 2002-12-12 23:20:31 +00:00
Misha Brukman 160a3da184 Added code generation for function prologues and epilogues. 
llvm-svn: 4930
 2002-12-04 23:58:08 +00:00
Misha Brukman dbb7b65bf3 Fun arithmetic with iterators aimed at fixing a bug: inserting instructions 
after the *current* instruction while keeping the iterator in the same
'logical' place.

llvm-svn: 4923
 2002-12-04 19:24:45 +00:00
Chris Lattner 57f055f2f2 Print out direct global references 
llvm-svn: 4906
 2002-12-04 06:44:41 +00:00
Misha Brukman a8ad93221a This should fix the bug seen with some registers not being allocated 
correctly: skipping instructions by incorrectly incrementing the pointer.

Also adds support for building a reg-to-regclass map, and splits the function
for saving register to stack into two, one suitable for virtual registers
(which also assigns it a physical register) and one for simply storing back
physical registers.

llvm-svn: 4898
 2002-12-03 23:15:19 +00:00
Chris Lattner bddc6dc5ad Checkin debug implementation of MCE 
llvm-svn: 4893
 2002-12-03 20:56:42 +00:00
Misha Brukman 2e035d64d1 * Abstracted out stack space allocation into its own function 
* Added saving of register values to the stack

llvm-svn: 4858
 2002-12-02 21:11:58 +00:00
Misha Brukman 60286d0916 A simple (spilling) register allocator. 
llvm-svn: 4828
 2002-11-22 22:44:32 +00:00
Misha Brukman d5b111a10c Initialize the SSARegMap. 
llvm-svn: 4782
 2002-11-20 18:55:27 +00:00
Chris Lattner d8ea18b695 Print is const! 
llvm-svn: 4737
 2002-11-17 23:22:13 +00:00
Chris Lattner 17ec8a8dd0 Remove only uses of markDef/markDefAndUse methods 
llvm-svn: 4719
 2002-11-17 22:14:08 +00:00
Chris Lattner a2620ac156 Fix warning 
llvm-svn: 4649
 2002-11-09 00:49:43 +00:00
Chris Lattner 36051c0c56 Move function to cpp file from header 
llvm-svn: 4510
 2002-11-02 22:07:51 +00:00
Chris Lattner dcf31cec85 New iostream definitions 
llvm-svn: 4482
 2002-11-01 16:46:05 +00:00
Vikram S. Adve 8c7b93f7e3 Restore support for indirect function calls (which briefly wasn't working 
after I removed annotations on MachineInstr for the CallDescriptor).

llvm-svn: 4469
 2002-10-31 15:34:48 +00:00
Chris Lattner 6c614a9931 Remove fixme 
llvm-svn: 4447
 2002-10-30 02:02:37 +00:00
Chris Lattner ac6e97410b Add special code to make printing SSA form machine instructions nicer 
llvm-svn: 4446
 2002-10-30 01:55:38 +00:00
Chris Lattner 4e9fb1f52e Use MRegisterInfo, if available, to print symbolic register names 
llvm-svn: 4438
 2002-10-30 00:58:19 +00:00
Chris Lattner 214808f8ac Implement structured machine code printing 
llvm-svn: 4435
 2002-10-30 00:48:05 +00:00
Chris Lattner 90e64905b9 Make argsize calculation stuff optional, so that Targets without FrameInfo 
objects yet don't die

llvm-svn: 4427
 2002-10-29 23:40:03 +00:00
Chris Lattner 27ccb70df6 Implement autoinserting ctor 
llvm-svn: 4426
 2002-10-29 23:19:00 +00:00
Chris Lattner bbd68ada1a Rename annotation id 
llvm-svn: 4425
 2002-10-29 23:18:43 +00:00
Chris Lattner f4e4ed7612 Merge with sparc backend 
llvm-svn: 4403
 2002-10-29 20:10:58 +00:00
Chris Lattner 8d3e9ab2cf X86 merge is complete, eliminate unused code 
llvm-svn: 4400
 2002-10-29 20:07:16 +00:00
Vikram S. Adve a1b4f0f85e Remove separate vector of implicit refs from MachineInstr, and 
instead record them as extra operands in the operands[] vector.
Also, move CallArgsDescriptor into this class instead of making it an
annotation on the machine instruction.

llvm-svn: 4399
 2002-10-29 19:41:18 +00:00
Vikram S. Adve db6596e551 Move CallArgsDescriptor into this class instead of making it an 
annotation on the machine instruction.

llvm-svn: 4398
 2002-10-29 19:38:46 +00:00
Chris Lattner 07e26837a9 Move TargetInstrDescriptors extern to the one .cpp file that refers to it: 
MachineInstr.cpp

llvm-svn: 4392
 2002-10-29 17:40:30 +00:00
Chris Lattner 660bf10981 Use higher level methods, don't use TargetInstrDescriptors directly! 
llvm-svn: 4389
 2002-10-29 17:35:39 +00:00
Chris Lattner 50ef1010c0 Use higher level method 
llvm-svn: 4386
 2002-10-29 17:25:41 +00:00
Chris Lattner 76014b97af Remove #include, misleading comment, and a typedef used only once 
llvm-svn: 4383
 2002-10-29 17:08:05 +00:00
Chris Lattner 6d6d87f3f3 Inline typedef, eliminate unused method 
llvm-svn: 4382
 2002-10-29 17:03:19 +00:00
Chris Lattner ca0f818347 Remove long dead #if 0 
llvm-svn: 4381
 2002-10-29 17:00:19 +00:00
Chris Lattner 5abe44bb72 Add #includes that were eliminated from headers 
llvm-svn: 4380
 2002-10-29 16:51:05 +00:00
Chris Lattner 189c099a7f De-inline methods 
llvm-svn: 4379
 2002-10-29 16:50:33 +00:00
Chris Lattner c9e9d2933d Remove #include 
llvm-svn: 4378
 2002-10-29 16:50:20 +00:00
Chris Lattner e9bda57b87 Remove unneeded #include 
llvm-svn: 4377
 2002-10-29 16:50:06 +00:00
Chris Lattner a13000449e Remove forward decl 
llvm-svn: 4376
 2002-10-29 16:49:44 +00:00
Chris Lattner 7ecc7af4bd Make assertIGNode be private to the InterferenceGraph.cpp file 
llvm-svn: 4375
 2002-10-29 16:42:34 +00:00
Chris Lattner 820b037815 MachineInstrInfo no longer #includes this header, so we must 
llvm-svn: 4366
 2002-10-28 23:54:47 +00:00
Chris Lattner 5c7d638208 Remove all traces of the "Opcode Mask" field in the MachineInstr class 
llvm-svn: 4359
 2002-10-28 21:17:20 +00:00
Chris Lattner bee314fc94 Remove more default arguments that are never used 
llvm-svn: 4358
 2002-10-28 21:02:40 +00:00
Chris Lattner 307fb1a314 Remove default operands that are never used 
llvm-svn: 4357
 2002-10-28 20:59:49 +00:00
Chris Lattner ca4a9d20b8 * Make MachineOperand ctors private, so MachineOperand can only be created 
by MachineInstr.
* Add a bunch of new methods to allow incremental addition of operands to the
  machine instr instance.

llvm-svn: 4356
 2002-10-28 20:48:39 +00:00
Misha Brukman 6be5e92526 Replaced uses of deprecated `MachineFunction::get(BasicBlock *BB)'. 
llvm-svn: 4351
 2002-10-28 20:00:31 +00:00
Chris Lattner 864d279667 Remove two arguments that are never specified 
llvm-svn: 4348
 2002-10-28 19:46:59 +00:00
Chris Lattner b1e39b5a27 Rename some regalloc fields 
llvm-svn: 4346
 2002-10-28 19:43:23 +00:00
Chris Lattner c9bd2c38a8 Eliminate usage of MachineBasicBlock::get 
llvm-svn: 4344
 2002-10-28 19:22:04 +00:00
Chris Lattner 76d59276af Remove usage of MachineBasicBlock::get 
llvm-svn: 4342
 2002-10-28 19:01:16 +00:00
Chris Lattner 967c38f4c5 Remove usage of MachineBasicBlock::get 
llvm-svn: 4341
 2002-10-28 18:50:08 +00:00
Chris Lattner 7421df92cb Eliminate unneccesary use of MachineBasicBlock::get 
llvm-svn: 4339
 2002-10-28 06:01:57 +00:00
Chris Lattner ba3a8060ff s/method/function 
llvm-svn: 4338
 2002-10-28 05:58:46 +00:00
Chris Lattner 8c63b6897d Change MachineBasicBlock's to not be Annotations, instead they are kept as 
part of a linked list tracked by MachineFunction.  MachineBasicBlock::get
is now linear time instead of constant time, and thus is deprecated!

llvm-svn: 4337
 2002-10-28 05:30:46 +00:00
Chris Lattner 881d8b3410 Make Scheduling Class variables be 'unsigned' instead of 'int' 
llvm-svn: 4333
 2002-10-28 04:53:02 +00:00
Chris Lattner 6a30b02b1d Rename the redundant MachineOperand::getOperandType() to MachineOperand::getType() 
llvm-svn: 4331
 2002-10-28 04:45:29 +00:00
Chris Lattner 340bb96e64 Fairly major overhaul of MachineInstr & Operand classes 
- Inline methods that are mostly a single line anyway
  - Eliminate several methods that were never called
  - Group methods a bit more consistently

llvm-svn: 4329
 2002-10-28 04:24:49 +00:00
Chris Lattner 9668c8c8db Add #includes now that MachineInstr.h doesn't include llvm/Target/MachineInstrInfo.h 
llvm-svn: 4327
 2002-10-28 02:28:39 +00:00
Chris Lattner 94a4f22573 Don't #include <Support/*>, #include "Support/*" 
llvm-svn: 4325
 2002-10-28 02:11:53 +00:00
Chris Lattner 2a3bd1c562 *** empty log message *** 
llvm-svn: 4323
 2002-10-28 02:01:37 +00:00
Chris Lattner 658839bafd MachineFunction now includes MachineBasicBlock so there is no need to 
reinclude it

llvm-svn: 4322
 2002-10-28 02:01:35 +00:00
Chris Lattner 8710aab04c Rename MachineCodeForBasicBlock to MachineBasicBlock 
llvm-svn: 4318
 2002-10-28 01:41:47 +00:00
Chris Lattner 6fc3ca062d *** empty log message *** 
llvm-svn: 4317
 2002-10-28 01:41:27 +00:00
Chris Lattner 9baa9ad7c7 Inline some methods from .cpp files into .h files, minor cleanups 
llvm-svn: 4313
 2002-10-28 01:21:55 +00:00
Chris Lattner 8494d08688 Minor cleanups 
llvm-svn: 4312
 2002-10-28 01:16:38 +00:00
Chris Lattner 6d8a6c645c Move machine code generation/destruction passes out of Sparc.cpp because 
they are generic

llvm-svn: 4310
 2002-10-28 01:12:41 +00:00
Chris Lattner f9df48d34c Prune #includes 
llvm-svn: 4307
 2002-10-28 01:02:51 +00:00
Chris Lattner 9f99867c6c Updates to match misha's changes 
llvm-svn: 4302
 2002-10-28 00:37:53 +00:00
Misha Brukman 7ae7f84cf3 Changed `MachineCodeForMethod' to `MachineFunction'. 
llvm-svn: 4301
 2002-10-28 00:28:31 +00:00
Chris Lattner 9e33759f88 Initial checkin of codegen infrastructure for LLVM-JIT 
llvm-svn: 4282
 2002-10-25 22:54:41 +00:00
Chris Lattner e97144120d Tell PassManager that this pass does not invalidate the CFG so that dominator 
information and Loop info will not have to be recomputed after this runs.

llvm-svn: 4269
 2002-10-23 03:30:47 +00:00
Chris Lattner 5ae3bd630d Ensure definate initialization 
llvm-svn: 4263
 2002-10-22 23:34:11 +00:00
Chris Lattner ce64eddb71 - Two minor improvements to the MachineInstr class to reduce footprint and 
overhead: Merge 3 parallel vectors into 1, change regsUsed hash_set to be a
    bitvector.  Sped up LLC a little less than 10% in a debug build!

llvm-svn: 4261
 2002-10-22 23:16:21 +00:00
Vikram S. Adve f5492b0c5b Significant improvement: GEP used by a load or store no longer generates 
a separate ADD; instead just use the indexed load/store instruction!
Also, a bug fix: folding a GEP with a leading non-zero index with
its predecessor was incorrect: now it only happens if the predecessor
is pointing to an indexable type (aka SequentialType).

llvm-svn: 4168
 2002-10-14 16:30:55 +00:00
Vikram S. Adve 9e5eb46362 Use vectors instead of hash_maps for issueGaps and conflictLists. 
These hash lookups were a major sink of time because they happen so often!
Also, add option to disable scheduling.

llvm-svn: 4138
 2002-10-13 00:40:37 +00:00
Vikram S. Adve f8c6e3db55 Major bug fix: was not adding CD edges for RETURNs! 
llvm-svn: 4137
 2002-10-13 00:39:22 +00:00
Vikram S. Adve 3e54d6c3be Major bug fix: spill code for an instruction in a delay slot was 
merrily being inserted before/after the instruction!

llvm-svn: 4116
 2002-10-11 16:12:40 +00:00
Vikram S. Adve ffc9dd5c0d Don't pad variables in stack slots for performance! 
llvm-svn: 4115
 2002-10-11 16:10:53 +00:00
Vikram S. Adve 75b4a29613 Bug fix in folding getElementPtr instructions: don't fold one into 
a predecessor if it has a non-zero first index and the predecessor
ends with a struct index.

llvm-svn: 3982
 2002-09-29 22:55:05 +00:00
Vikram S. Adve be55f2dd2c Convert DIRS to PARALLEL_DIRS. They can be built independently. 
llvm-svn: 3972
 2002-09-29 11:52:14 +00:00
Vikram S. Adve 9011903ee2 Added a couple of helper methods for live range construction. 
llvm-svn: 3970
 2002-09-28 17:05:43 +00:00
Vikram S. Adve ed2df3ecf8 Live ranges for Return value and return address of a Call are now 
created here, simply by handling all implicit operands (which should
have been done anyway).

llvm-svn: 3969
 2002-09-28 17:05:22 +00:00