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