cde4ade314
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
43e82e1152
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
f54cd1524d
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
7dceed5ff9
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
9f75a55329
finegrainify namespacification, fix 80col prob
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llvm-svn: 11445
2004-02-14 06:00:36 +00:00
5a92240270
Use newly added next() and prior() utility functions.
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llvm-svn: 11430
2004-02-14 01:18:34 +00:00
537805f315
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
80da865f77
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
327426411e
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
960707c335
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
9118a426d3
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
482202a601
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
fdfe370406
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
97c7a8ed1a
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
7eb05a170a
Spell `necessary' correctly.
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llvm-svn: 7944
2003-08-18 14:43:39 +00:00
6aa90493a3
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
a4741a94ff
Switch over to TableGen generated register file description
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llvm-svn: 7511
2003-08-03 15:48:14 +00:00
bbc8db5266
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
30f40d94cc
Rename -no-* to -disable-*
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llvm-svn: 5642
2003-02-26 20:00:41 +00:00
b2809dc6b5
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
9e75444c8b
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
06e07162fc
* 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
26c23467c5
Rename FunctionFrameInfo to MachineFrameInfo
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llvm-svn: 5201
2002-12-28 21:08:28 +00:00
1d79b4ce86
*** 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
dafa31658f
New simpler spill interface
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llvm-svn: 5148
2002-12-25 05:07:09 +00:00
d8201972bf
Fix compilation on gcc 2.96
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llvm-svn: 5116
2002-12-23 23:46:55 +00:00
6e7c821dc0
Fix warning
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llvm-svn: 5109
2002-12-20 04:13:28 +00:00
4cb8af96b3
Update to use new interface for register info
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llvm-svn: 5098
2002-12-17 04:19:17 +00:00
eaf58b03b2
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
5afbc4c387
Register allocator is responsible for spilling callee saved regs
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llvm-svn: 5092
2002-12-17 02:48:57 +00:00
c87fcde854
Fix prolog/epilog in the presence of alloca
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llvm-svn: 5087
2002-12-16 22:29:30 +00:00
6b5ca53493
Finish implementation of alias list impl
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llvm-svn: 5083
2002-12-16 19:31:48 +00:00
d44d25323d
Try #2 to get alias set stuff to work
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llvm-svn: 5077
2002-12-16 16:14:51 +00:00
4cf76c23e8
Add info about register file aliasing
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llvm-svn: 5074
2002-12-16 15:55:25 +00:00
3c1b59ca59
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
e2533336f5
Simplify interfaces used by regalloc to insert code
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llvm-svn: 5052
2002-12-15 20:06:35 +00:00
3374ec7c1b
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
121ae7d3a7
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
78401cbb3c
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
862f3ef8bc
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
83e62f14dd
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
1af9bebcda
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
0d28502c32
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
d9522256d3
Added support for callee- and caller-save registers.
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llvm-svn: 4897
2002-12-03 23:11:21 +00:00
aa15563510
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
5014e38273
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
bde217d7a9
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
53d2de923a
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
d92fb0058b
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
Alkis Evlogimenos