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559 Commits

Author SHA1 Message Date
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
Vikram S. Adve
4acb69b4ea 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