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710 Commits

Author SHA1 Message Date
Guochun Shi
385c1556a9 a simple introduction to this pass 
llvm-svn: 6675
 2003-06-10 20:02:16 +00:00
Guochun Shi
8783d79b8b cleaned code 
add some comments

llvm-svn: 6674
 2003-06-10 19:09:00 +00:00
Guochun Shi
7868d0f43e delete useless functions 
add comment

llvm-svn: 6673
 2003-06-08 23:16:07 +00:00
Guochun Shi
24ac61d239 change DEBUG to DEBUG_PRINT 
llvm-svn: 6672
 2003-06-08 20:40:47 +00:00
Misha Brukman
ba5c703619 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
060e5e326b Fix bug: Jello/2003-06-04-bzip2-bug.ll 
llvm-svn: 6624
 2003-06-05 17:15:04 +00:00
Misha Brukman
b126ea43eb 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
a69a008010 Pass through the emitConstantPool() call to the real emitter. 
llvm-svn: 6590
 2003-06-03 20:00:49 +00:00
Misha Brukman
7a5eac8485 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
8871478c0c 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
abad1ceca0 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
46e24d4492 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
322afbda9d Add #include 
llvm-svn: 6550
 2003-06-02 22:05:13 +00:00
Misha Brukman
e837bd5b48 Removed a useless ofstream. 
llvm-svn: 6547
 2003-06-02 20:49:09 +00:00
Guochun Shi
c41e21ef9e compiled with the new SchedGraphCommon 
llvm-svn: 6545
 2003-06-02 17:48:56 +00:00
Misha Brukman
1407922069 Remove spurious assert() 
llvm-svn: 6529
 2003-06-02 04:10:41 +00:00
Chris Lattner
3422940bc8 Changes to be compatible with MachineCodeEmitter.h 
llvm-svn: 6515
 2003-06-01 23:22:11 +00:00
Vikram S. Adve
540655e2ae Minor changes. 
llvm-svn: 6470
 2003-05-31 07:41:54 +00:00
Vikram S. Adve
d43c10b583 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
b2bb0dd8ca Allow explicit physical registers for implicit operands. 
llvm-svn: 6468
 2003-05-31 07:39:06 +00:00
Vikram S. Adve
2d906f4550 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
194a5862e0 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
b1b8a6732e When converting virtual registers to immediate constants, change the opcode. 
llvm-svn: 6452
 2003-05-30 20:36:27 +00:00
Misha Brukman
c5a1e94883 Added saveBBreferences() for BasicBlock resolution. 
llvm-svn: 6451
 2003-05-30 20:32:45 +00:00
Guochun Shi
21f3083978 so far everything compiles 
llvm-svn: 6423
 2003-05-30 00:17:09 +00:00
Misha Brukman
51eb037b1e 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
4960b8db94 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
681b3c77fa (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
daf2cc3c48 Cleaned up code layout. No functional changes. 
llvm-svn: 6304
 2003-05-22 21:49:18 +00:00
Misha Brukman
7d91017b21 Kill `using' directives. 
llvm-svn: 6301
 2003-05-22 21:24:35 +00:00
Chris Lattner
a4fe60d3c1 Use a kill, not a dead definition, update comment 
llvm-svn: 6131
 2003-05-12 17:37:30 +00:00
Chris Lattner
e78921f048 * 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
ce4b5cd9bf 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
a8497e3094 * 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
3ab77b0589 Fix N^2 algorithm 
llvm-svn: 6112
 2003-05-12 04:08:54 +00:00
Chris Lattner
30e6616afa * 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
738ee6f0fd Fix tab infestation! 
llvm-svn: 6109
 2003-05-12 03:54:14 +00:00
Chris Lattner
3160b1235e Allow const functions 
llvm-svn: 6056
 2003-05-09 03:27:41 +00:00
Chris Lattner
a24e816c31 Add methods for stub function generation 
llvm-svn: 6054
 2003-05-08 21:54:18 +00:00
Chris Lattner
d3d53723a2 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
15d2a1b0b9 Re-add gross hack, it's still necessary. :( 
llvm-svn: 6012
 2003-05-06 21:44:54 +00:00
Chris Lattner
bfeffcec97 Remove hideously nasty hack 
llvm-svn: 6011
 2003-05-06 21:32:39 +00:00
Misha Brukman
cf277f9143 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
8f2c71cae2 Fix a bug which occurred with empty basic blocks 
llvm-svn: 5982
 2003-05-02 18:44:42 +00:00
Chris Lattner
00a12b165a Minor cleanup 
llvm-svn: 5976
 2003-05-01 21:18:47 +00:00
Chris Lattner
3e687b8b65 Remove unneccesary &* 
llvm-svn: 5871
 2003-04-23 16:36:11 +00:00
Misha Brukman
1d82003535 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
127a46eeba 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
1db4cefc28 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
478533bb86 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
9ba51857c1 *** empty log message *** 
llvm-svn: 5755
 2003-03-27 17:57:44 +00:00
Chris Lattner
1d35ac61ce 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
3228091a65 Fix problems with empty basic blocks 
llvm-svn: 5326
 2003-01-16 18:06:43 +00:00
Chris Lattner
76fc0fcfa5 Arg, fix bugs in previous checkin... 
llvm-svn: 5322
 2003-01-16 02:24:20 +00:00
Chris Lattner
ba0f68ad4a Add assertion 
llvm-svn: 5321
 2003-01-16 02:22:08 +00:00
Chris Lattner
52c6c50212 * 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
301e1307d2 Move sparc specific code into the Sparc backend 
llvm-svn: 5317
 2003-01-15 21:36:50 +00:00
Chris Lattner
4846297632 Adjust to new interfaces 
llvm-svn: 5314
 2003-01-15 21:14:01 +00:00
Chris Lattner
7f6d496ab0 Move headers around 
llvm-svn: 5312
 2003-01-15 21:02:16 +00:00
Chris Lattner
53a41beb57 Header is moved into local directory 
llvm-svn: 5311
 2003-01-15 21:00:02 +00:00
Chris Lattner
ec5237b2fe Fix bug in previous checkin 
llvm-svn: 5310
 2003-01-15 20:32:15 +00:00
Chris Lattner
405c4eb45e Add new method 
llvm-svn: 5309
 2003-01-15 20:28:36 +00:00
Chris Lattner
e5a3e82de5 #include RegClass.h explicitly 
llvm-svn: 5307
 2003-01-15 19:57:07 +00:00
Chris Lattner
c5e832b829 Remvoe dependency on RegClass.h 
llvm-svn: 5306
 2003-01-15 19:56:21 +00:00
Chris Lattner
760b144cf9 Prune #includes 
llvm-svn: 5303
 2003-01-15 19:48:13 +00:00
Chris Lattner
c934e3fa5f Minor changes 
llvm-svn: 5302
 2003-01-15 19:47:53 +00:00
Chris Lattner
cfa7a8f9a2 Remove obsolete ctor 
llvm-svn: 5301
 2003-01-15 19:47:02 +00:00
Chris Lattner
4c178a5732 Remove dead code 
llvm-svn: 5298
 2003-01-15 19:22:38 +00:00
Chris Lattner
c7ffc9b9e3 Use buildmi not MI ctor directly 
llvm-svn: 5293
 2003-01-15 18:08:07 +00:00
Chris Lattner
07b0e49989 Rename llvm/Analysis/LiveVar/FunctionLiveVarInfo.h -> llvm/CodeGen/FunctionLiveVarInfo.h 
llvm-svn: 5284
 2003-01-14 23:05:08 +00:00
Chris Lattner
57b5e8891e Move llvm/Analysis/LiveVar/ValueSet.h to CodeGen/ValueSet.h 
llvm-svn: 5282
 2003-01-14 22:56:37 +00:00
Chris Lattner
b27d60ccf1 Rename MachineInstrInfo -> TargetInstrInfo 
llvm-svn: 5272
 2003-01-14 22:00:31 +00:00
Chris Lattner
76e5849ba6 New files 
llvm-svn: 5262
 2003-01-13 20:01:16 +00:00
Chris Lattner
0e9b41cd57 * Use the PHI Elimination pass 
llvm-svn: 5220
 2003-01-13 00:26:08 +00:00
Chris Lattner
eb2bc51e49 * 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
e9bef83e93 Convert to MachineFunctionPass 
llvm-svn: 5218
 2003-01-13 00:23:41 +00:00
Chris Lattner
acef9340fe Add support for 3 new forms of MachineOperand 
llvm-svn: 5217
 2003-01-13 00:23:24 +00:00
Chris Lattner
ed14156bf6 Add support for constant pool 
Add helper methods for MachineFrameInfo

llvm-svn: 5216
 2003-01-13 00:23:03 +00:00
Chris Lattner
93ba1b8b05 Add support for global address by string and constant pool values 
llvm-svn: 5215
 2003-01-13 00:22:37 +00:00
Chris Lattner
dfa3c21f1c More renamings of Target/Machine*Info to Target/Target*Info 
llvm-svn: 5204
 2002-12-29 03:13:05 +00:00
Chris Lattner
bff4411f3a Rename MachineOptInfo to TargetoptInfo 
Rename MachineCacheInfo to TargetCacheInfo

llvm-svn: 5203
 2002-12-29 02:50:35 +00:00
Chris Lattner
500e45fe72 Rename FunctionFrameInfo to MachineFrameInfo 
llvm-svn: 5200
 2002-12-28 21:08:26 +00:00
Chris Lattner
2407294a41 Rename MachineFrameInfo to TargetFrameInfo.h 
llvm-svn: 5199
 2002-12-28 21:00:25 +00:00
Chris Lattner
0ca1e472f2 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
c10678de64 * 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
239563061c * 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
831939c09a * Add printing support for FrameIndex operands 
llvm-svn: 5194
 2002-12-28 20:37:37 +00:00
Chris Lattner
64b1ad63c1 * 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
6ce5c54520 Frame info moved out of MachineFunction into a seperate object 
llvm-svn: 5192
 2002-12-28 20:35:34 +00:00
Chris Lattner
3a506e6f14 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
1f19acbda7 Adjustments to work with the simpler spill interface 
llvm-svn: 5144
 2002-12-25 05:04:20 +00:00
Chris Lattner
10edd6367e Remove dependency on SSARegMap.h by MachineFunction.h 
llvm-svn: 5143
 2002-12-25 05:03:22 +00:00
Chris Lattner
7888f74224 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
7abe5199b3 Fix compilation on GCC 2.96 
llvm-svn: 5113
 2002-12-23 23:44:04 +00:00
Chris Lattner
5ddc4b5f94 * 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
bb2e7ec2b1 Implicit defs/uses list may be empty. 
llvm-svn: 5103
 2002-12-18 01:11:14 +00:00
Chris Lattner
c6ac5c70c6 Use new reginfo interface 
llvm-svn: 5099
 2002-12-17 04:19:40 +00:00
Chris Lattner
e66a7e80c3 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
8dd15fd26c 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
cdcde16ad0 * 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
0ede83ee56 Keep the stack frame aligned. 
llvm-svn: 5081
 2002-12-16 17:42:40 +00:00
Chris Lattner
d44868a709 Initial checkin of "local" register allocator. Bugs are still present. 
llvm-svn: 5078
 2002-12-16 16:15:28 +00:00
Chris Lattner
064dd4ef95 Rename createSimpleX86RegisterAllocator to createSimpleRegisterAllocator. 
Remvoe some dead code

llvm-svn: 5070
 2002-12-16 14:37:00 +00:00
Chris Lattner
93b0272717 Some simpliciations to the spill/reload interface 
llvm-svn: 5067
 2002-12-15 23:01:26 +00:00
Chris Lattner
6a2d7bef14 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
ebb82f7f96 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
370918a2db Remove unused savePhysRegToStack method 
llvm-svn: 5061
 2002-12-15 21:33:51 +00:00
Chris Lattner
35ceaa7322 Localize a map, remove another 
llvm-svn: 5060
 2002-12-15 21:24:30 +00:00
Chris Lattner
f499e065be Give simple reg allocator a nice Pass Name 
llvm-svn: 5058
 2002-12-15 21:13:12 +00:00
Chris Lattner
da3e75b117 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
e8acf72d80 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
234abaea18 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
dd307412c4 Implement printing of MBB arguments 
llvm-svn: 5053
 2002-12-15 20:35:25 +00:00
Chris Lattner
4214ac384a Simplify interfaces used by regalloc to insert code 
llvm-svn: 5052
 2002-12-15 20:06:35 +00:00
Chris Lattner
351dc9af16 * 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
6c5c2a58ee * 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
c43cb38245 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
2c20e950be Prune #includes 
llvm-svn: 5044
 2002-12-15 18:19:24 +00:00
Chris Lattner
aab9196e79 Remove extraneous #includes, perform FIXME 
llvm-svn: 5043
 2002-12-15 18:15:24 +00:00
Chris Lattner
41ad5c9aff Fix borkness with not using MachineBasicBlocks in PHI nodes 
llvm-svn: 5035
 2002-12-15 08:02:51 +00:00
Misha Brukman
de680081ab Fixed a bug where moves due to phis were being neglected. 
llvm-svn: 5019
 2002-12-13 12:33:31 +00:00
Misha Brukman
1f57df5fad 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
0bfbbc73f2 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
e694e406a4 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
af40b6adcd This should handle register allocating PHI nodes. 
llvm-svn: 5002
 2002-12-13 09:54:36 +00:00
Misha Brukman
e5a8dcc695 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
12bec4ecef 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
8f56246d62 Added code generation for function prologues and epilogues. 
llvm-svn: 4930
 2002-12-04 23:58:08 +00:00
Misha Brukman
566bac5ec1 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
994984de43 Print out direct global references 
llvm-svn: 4906
 2002-12-04 06:44:41 +00:00
Misha Brukman
f13126a427 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
47478b4dce Checkin debug implementation of MCE 
llvm-svn: 4893
 2002-12-03 20:56:42 +00:00
Misha Brukman
f776547336 * 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
021bf57248 A simple (spilling) register allocator. 
llvm-svn: 4828
 2002-11-22 22:44:32 +00:00
Misha Brukman
2bf32bfea1 Initialize the SSARegMap. 
llvm-svn: 4782
 2002-11-20 18:55:27 +00:00
Chris Lattner
3afc487fba Print is const! 
llvm-svn: 4737
 2002-11-17 23:22:13 +00:00
Chris Lattner
8ac4eea84b Remove only uses of markDef/markDefAndUse methods 
llvm-svn: 4719
 2002-11-17 22:14:08 +00:00
Chris Lattner
0141841bc4 Fix warning 
llvm-svn: 4649
 2002-11-09 00:49:43 +00:00
Chris Lattner
0478222ec2 Move function to cpp file from header 
llvm-svn: 4510
 2002-11-02 22:07:51 +00:00
Chris Lattner
4b8d170d55 New iostream definitions 
llvm-svn: 4482
 2002-11-01 16:46:05 +00:00
Vikram S. Adve
8ecd939ce9 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
8fa0840abd Remove fixme 
llvm-svn: 4447
 2002-10-30 02:02:37 +00:00
Chris Lattner
98e6bad1ee Add special code to make printing SSA form machine instructions nicer 
llvm-svn: 4446
 2002-10-30 01:55:38 +00:00
Chris Lattner
8dfb0ef7b0 Use MRegisterInfo, if available, to print symbolic register names 
llvm-svn: 4438
 2002-10-30 00:58:19 +00:00
Chris Lattner
2cfa08e4bf Implement structured machine code printing 
llvm-svn: 4435
 2002-10-30 00:48:05 +00:00
Chris Lattner
e89cb8ba64 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
64fa3f3e97 Implement autoinserting ctor 
llvm-svn: 4426
 2002-10-29 23:19:00 +00:00
Chris Lattner
de3938a592 Rename annotation id 
llvm-svn: 4425
 2002-10-29 23:18:43 +00:00
Chris Lattner
fc88414ffd Merge with sparc backend 
llvm-svn: 4403
 2002-10-29 20:10:58 +00:00
Chris Lattner
0ac25d509c X86 merge is complete, eliminate unused code 
llvm-svn: 4400
 2002-10-29 20:07:16 +00:00