Alkis Evlogimenos
5aa39e1583
Add support for folding memory operands for ADC, SBB and SUB instructions.
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llvm-svn: 11541
2004-02-17 08:08:51 +00:00
Chris Lattner
eb1428d581
Add a (hidden) option to print instructions that fail to fuse. It's looking
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like compares and test's would be the next huge win...
llvm-svn: 11539
2004-02-17 08:03:47 +00:00
Alkis Evlogimenos
19248dd757
Add support for folding memory operands in MOVri{8,16,32} instructions.
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llvm-svn: 11538
2004-02-17 07:47:20 +00:00
Chris Lattner
a9493ad718
Add an option to disable spill fusing in the X86 backend
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llvm-svn: 11531
2004-02-17 06:30:34 +00:00
Chris Lattner
d4b2f4ef32
Fix the mneumonics for the mov instructions to have the source and destination
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order in the correct sense!! Arg!
llvm-svn: 11530
2004-02-17 06:28:19 +00:00
Chris Lattner
4682990fa5
GRRR. Move instructions have swapped the order of the r/m operands.
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llvm-svn: 11528
2004-02-17 06:20:20 +00:00
Chris Lattner
e227ae6b88
Change to match the newer, simpler, interface
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llvm-svn: 11525
2004-02-17 05:54:57 +00:00
Chris Lattner
b82bb37952
Add support for folding memory operands into AND and IMUL's
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llvm-svn: 11523
2004-02-17 05:46:06 +00:00
Chris Lattner
48e19d8b8e
Scrunchify code, by adding helpers. No functionality changes.
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llvm-svn: 11522
2004-02-17 05:35:13 +00:00
Alkis Evlogimenos
c4ec9111bb
Add API to check and fold memory operands into instructions.
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llvm-svn: 11519
2004-02-17 04:33:18 +00:00
Chris Lattner
679c106ce3
Fix the 'have a framepointer' case, so that the frame pointer always points
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to the old saved EBP.
llvm-svn: 11455
2004-02-15 00:15:37 +00:00
Chris Lattner
3246911460
There is no reason to align the stack pointer if there are no callees of this
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function!
llvm-svn: 11450
2004-02-14 20:11:07 +00:00
Chris Lattner
f28479d600
The prologue/epilogue related method calls have no reason to return a value,
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make them return void.
This allows us to avoid some costly MBB.size() calls
llvm-svn: 11448
2004-02-14 19:49:54 +00:00
Chris Lattner
1248c8a7f7
finegrainify namespacification, fix 80col prob
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llvm-svn: 11445
2004-02-14 06:00:36 +00:00
Alkis Evlogimenos
a31a767307
Use newly added next() and prior() utility functions.
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llvm-svn: 11430
2004-02-14 01:18:34 +00:00
Alkis Evlogimenos
94cab18bdc
Change interface so that we can add to the end of a basic block
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without getting an assertion from ilist that we are dereferencing
ilist<T>::end().
llvm-svn: 11345
2004-02-12 08:11:04 +00:00
Alkis Evlogimenos
b755d35fd2
Change MachineBasicBlock's vector of MachineInstr pointers into an
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ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.
llvm-svn: 11340
2004-02-12 02:27:10 +00:00
Alkis Evlogimenos
676e5b8997
Modify the two address instruction pass to remove the duplicate
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operand of the instruction and thus simplify the register allocation.
llvm-svn: 11124
2004-02-04 22:17:40 +00:00
Brian Gaeke
d25f86d683
Put all LLVM code into the llvm namespace, as per bug 109.
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llvm-svn: 9903
2003-11-11 22:41:34 +00:00
Alkis Evlogimenos
c6a7c83333
Change all machine basic block modifier functions in MRegisterInfo to
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return the number of instructions added to/removed from the basic block
passed as their first argument.
Note: This is only needed because we use a std::vector instead of an
ilist to keep MachineBasicBlock instructions. Inserting an instruction
to a MachineBasicBlock invalidates all iterators to the basic
block. The return value can be used to update an index to the machine
basic block instruction vector and circumvent the iterator elimination
problem but this is really not needed if we move to a better
representation.
llvm-svn: 9704
2003-11-04 22:57:09 +00:00
John Criswell
b402729b30
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
llvm-svn: 9298
2003-10-20 19:43:21 +00:00
Chris Lattner
c115e75755
Output a contorted sequence of instructions to make sure that we don't access
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off the bottom of the stack. This fixes PR#41
llvm-svn: 9114
2003-10-14 19:09:05 +00:00
Chris Lattner
907de53acb
Disable the leaf function optimization, which is apparently not legal on
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X86/linux. :( The problem is that a signal delivered while the function
is executing could clobber the functions stack. This is a partial fix
for PR41.
llvm-svn: 9113
2003-10-14 18:52:41 +00:00
Misha Brukman
56f7db4178
Spell `necessary' correctly.
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llvm-svn: 7944
2003-08-18 14:43:39 +00:00
Chris Lattner
cd1aec5a9d
Rename register classes to be upper case to make it obvious that they are X86
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specific in the tree patterns
llvm-svn: 7578
2003-08-04 20:58:29 +00:00
Chris Lattner
457b33f7e4
Switch over to TableGen generated register file description
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llvm-svn: 7511
2003-08-03 15:48:14 +00:00
Chris Lattner
8fdf81b97e
Move "register flags" definition the type of registers to be fully fledged
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value types
llvm-svn: 7377
2003-07-29 05:14:16 +00:00
Chris Lattner
ea424f3aff
Rename -no-* to -disable-*
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llvm-svn: 5642
2003-02-26 20:00:41 +00:00
Chris Lattner
013ad21206
Implement code to keep the stack pointer aligned to an 8 byte boundary.
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This improves the performance of the power benchmark by a few percent.
This will be neccesary for SSE code, which requires 16 byte alignment of
the stack.
llvm-svn: 5320
2003-01-16 02:20:12 +00:00
Chris Lattner
df631471bf
Handle frame offset due to return address pushed on the stack
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llvm-svn: 5319
2003-01-15 22:57:35 +00:00
Chris Lattner
b355b13a8e
* Move frame and constant pool indexes to first argument of memory reference
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so we can put an offset in there as well...
* Fix long/ulong stuff
llvm-svn: 5231
2003-01-13 00:50:33 +00:00
Chris Lattner
ea33ca1e96
Rename FunctionFrameInfo to MachineFrameInfo
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llvm-svn: 5201
2002-12-28 21:08:28 +00:00
Chris Lattner
a2bb8607ab
*** Implement frame pointer elimination on X86!
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* Include contents of X86RegisterClasses.cpp into here
* Adjustments to register api to work with new frame manager
* Eliminate moveImm2Reg, getFramePointer, and getStackPointer
* Cleanup and simplify prolog/epilog code generation
* Prolog/epilog are MUCH more efficient now.
llvm-svn: 5186
2002-12-28 20:32:28 +00:00
Chris Lattner
05a3f80d24
New simpler spill interface
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llvm-svn: 5148
2002-12-25 05:07:09 +00:00
Chris Lattner
8e628685d9
Fix compilation on gcc 2.96
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llvm-svn: 5116
2002-12-23 23:46:55 +00:00
Chris Lattner
2dc1b58c11
Fix warning
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llvm-svn: 5109
2002-12-20 04:13:28 +00:00
Chris Lattner
0b617b0e1d
Update to use new interface for register info
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llvm-svn: 5098
2002-12-17 04:19:17 +00:00
Chris Lattner
dbca3de031
Round number of bytes allocated on the stack up to a multiple of 4 so that the
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stack remains aligned
llvm-svn: 5095
2002-12-17 03:15:26 +00:00
Chris Lattner
4a60d804c2
Register allocator is responsible for spilling callee saved regs
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llvm-svn: 5092
2002-12-17 02:48:57 +00:00
Chris Lattner
9d64c1e53a
Fix prolog/epilog in the presence of alloca
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llvm-svn: 5087
2002-12-16 22:29:30 +00:00
Chris Lattner
4576429b7c
Finish implementation of alias list impl
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llvm-svn: 5083
2002-12-16 19:31:48 +00:00
Chris Lattner
b833239d6b
Try #2 to get alias set stuff to work
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llvm-svn: 5077
2002-12-16 16:14:51 +00:00
Chris Lattner
b413ce63d5
Add info about register file aliasing
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llvm-svn: 5074
2002-12-16 15:55:25 +00:00
Chris Lattner
4964e751cd
Correct the setting of Def flags on registers that are modified!
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llvm-svn: 5065
2002-12-15 22:38:47 +00:00
Chris Lattner
4214ac384a
Simplify interfaces used by regalloc to insert code
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llvm-svn: 5052
2002-12-15 20:06:35 +00:00
Misha Brukman
2f2cf00a9f
Cleaned up the code: factored out switch/case into a separate function, put
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constants in an array for quick lookup. Stole the idea from elsewhere in
Jello.
llvm-svn: 5017
2002-12-13 12:00:06 +00:00
Misha Brukman
b6fb990276
Treat longs as ints => pretend they're all 32-bit values and squeeze them into
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32-bit registers.
llvm-svn: 5008
2002-12-13 10:43:09 +00:00
Misha Brukman
fb02408496
Added moveReg2Reg() and moveImm2Reg() to accomodate moving data around due to
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PHI nodes.
llvm-svn: 5001
2002-12-13 09:54:12 +00:00
Misha Brukman
20c9c61c6d
Moves now select correct opcode based on the data size.
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llvm-svn: 4981
2002-12-13 04:24:53 +00:00
Misha Brukman
7dc6877ce2
Implemented functions for emitting prologues and epilogues;
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removed EBP from the list of callee-saved registers (it isn't one).
llvm-svn: 4929
2002-12-04 23:57:03 +00:00
Misha Brukman
101076f586
storeReg2RegOffset() and loadRegOffset2Reg() now take the iterator by value
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instead of by reference, since they return the modified iterator.
llvm-svn: 4914
2002-12-04 17:14:13 +00:00
Misha Brukman
6e1c4851ea
Moved buildReg2RegClassMap() into from X86RegisterInfo to MRegisterInfo, since
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it is target-independent.
llvm-svn: 4911
2002-12-04 16:47:04 +00:00
Misha Brukman
5639a6279e
Added support for callee- and caller-save registers.
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llvm-svn: 4897
2002-12-03 23:11:21 +00:00
Misha Brukman
0b310e3359
Fix order of operands on a store from reg to [reg+offset].
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llvm-svn: 4857
2002-12-02 21:10:35 +00:00
Misha Brukman
3ba057b8c4
Oops. Got the MOVrm and MOVmr mixed up. Fixed. We can now print out
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instructions correctly.
llvm-svn: 4830
2002-11-22 23:15:27 +00:00
Misha Brukman
02c0acabb9
Added methods to read/write values to stack in .h, fixed implementation in
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.cpp to return the iterator correctly.
llvm-svn: 4827
2002-11-22 22:43:47 +00:00
Misha Brukman
96283090dc
Add definitions for function headers from MRegisterInfo.h:
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Some functions are in X86RegisterInfo.cpp, others, because of the data they
need, are in X86RegisterClasses.cpp, which also defines some register classes:
byte, short, and int.
llvm-svn: 4784
2002-11-20 18:59:43 +00:00
Chris Lattner
d25a097994
Initial checkin of X86 backend.
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We can instruction select exactly one instruction 'ret void'. Wow.
llvm-svn: 4284
2002-10-25 22:55:53 +00:00