Chris Lattner
e894de1791
The simple isel being gone makes this dead!
...
llvm-svn: 22914
2005-08-19 18:32:03 +00:00
Jeff Cohen
bd51ec7461
Eliminate all remaining tabs and trailing spaces.
...
llvm-svn: 22523
2005-07-27 06:12:32 +00:00
Nate Begeman
e5314eb2c2
First round of support for doing scalar FP using the SSE2 ISA extension and
...
XMM registers. There are many known deficiencies and fixmes, which will be
addressed ASAP. The major benefit of this work is that it will allow the
LLVM register allocator to allocate FP registers across basic blocks.
The x86 backend will still default to x87 style FP. To enable this work,
you must pass -enable-sse-scalar-fp and either -sse2 or -sse3 to llc.
An example before and after would be for:
double foo(double *P) { double Sum = 0; int i; for (i = 0; i < 1000; ++i)
Sum += P[i]; return Sum; }
The inner loop looks like the following:
x87:
.LBB_foo_1: # no_exit
fldl (%esp)
faddl (%eax,%ecx,8)
fstpl (%esp)
incl %ecx
cmpl $1000, %ecx
#FP_REG_KILL
jne .LBB_foo_1 # no_exit
SSE2:
addsd (%eax,%ecx,8), %xmm0
incl %ecx
cmpl $1000, %ecx
#FP_REG_KILL
jne .LBB_foo_1 # no_exit
llvm-svn: 22340
2005-07-06 18:59:04 +00:00
Chris Lattner
2fd2e53f6a
Teach reginfo how to deal with ADJSTACKPTRri, allowing us to generate:
...
add %ESP, 20
jmp %EDX # TAIL CALL
instead of:
add %ESP, -8
add %ESP, 28
jmp %EDX # TAIL CALL
llvm-svn: 22047
2005-05-15 05:49:58 +00:00
Chris Lattner
adb31a99fa
When emitting the function epilog, check to see if there already a stack
...
adjustment. If so, we merge the adjustment into the existing one. This
allows us to generate:
caller2:
sub %ESP, 12
mov DWORD PTR [%ESP], 0
mov %EAX, 1234567890
mov %EDX, 0
call func2
add %ESP, 8
ret 4
intead of:
caller2:
sub %ESP, 12
mov DWORD PTR [%ESP], 0
mov %EAX, 1234567890
mov %EDX, 0
call func2
sub %ESP, 4
add %ESP, 12
ret 4
for X86/fast-cc-merge-stack-adj.ll
llvm-svn: 22038
2005-05-14 23:53:43 +00:00
Chris Lattner
37e226fa9b
Add some new instructions
...
llvm-svn: 22036
2005-05-14 23:35:21 +00:00
Chris Lattner
62593e4e66
switch to having the callee pop stack operands for fastcc. This is currently buggy
...
do not use
llvm-svn: 21984
2005-05-13 21:44:04 +00:00
Chris Lattner
e9944b033d
allow RETI
...
llvm-svn: 21980
2005-05-13 20:46:35 +00:00
Chris Lattner
ba7cdbebb1
add signed versions of the extra precision multiplies
...
llvm-svn: 21106
2005-04-06 04:19:22 +00:00
Chris Lattner
34757ff939
Add rotate instructions.
...
llvm-svn: 19690
2005-01-19 07:50:03 +00:00
Chris Lattner
9d5ee289d7
Improve coverage of the X86 instruction set by adding 16-bit shift doubles.
...
llvm-svn: 19687
2005-01-19 07:31:24 +00:00
Chris Lattner
65d007ab62
Add conditional moves for the parity flag.
...
llvm-svn: 19437
2005-01-10 22:09:33 +00:00
Chris Lattner
95f1e628ed
Add support for SETNPr to lower to memory form.
...
llvm-svn: 19248
2005-01-02 02:37:46 +00:00
Chris Lattner
316f923a9c
Spill/restore X86 floating point stack registers with 64-bits of precision
...
instead of 80-bits of precision. This fixes PR467.
This change speeds up fldry on X86 with LLC from 7.32s on apoc to 4.68s.
llvm-svn: 18433
2004-12-02 18:17:31 +00:00
Chris Lattner
acd213fba3
Add some new instructions. Fix the asm string for sbb32rr
...
llvm-svn: 16759
2004-10-06 04:01:02 +00:00
Reid Spencer
c4abcbefb1
Changes For Bug 352
...
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.
llvm-svn: 16137
2004-09-01 22:55:40 +00:00
Chris Lattner
4427fd9a3c
Reduce uses of getRegClass
...
llvm-svn: 15973
2004-08-21 20:13:52 +00:00
Chris Lattner
555a585fd8
Code insertion methods now return void instead of an int.
...
llvm-svn: 15780
2004-08-15 22:15:11 +00:00
Chris Lattner
e58190f5f6
These methods no longer take a TargetRegisterClass* operand.
...
llvm-svn: 15774
2004-08-15 21:56:44 +00:00
Nate Begeman
fabece673b
Eliminate MachineFunction& argument from eliminateFrameIndex in x86 Target. Get MachineFunction from MachineInstruction's parent's parent
...
llvm-svn: 15739
2004-08-14 22:05:10 +00:00
Chris Lattner
d7905d828b
Reserve the correct amt of space.
...
llvm-svn: 14913
2004-07-17 20:24:05 +00:00
Chris Lattner
6331eb6bbe
Delete the allocate*TargetMachine function, which is now dead .
...
The shared command line options are now in a header that makes sense.
llvm-svn: 14756
2004-07-11 04:17:10 +00:00
Reid Spencer
50ec3f9325
Add #include <iostream> since Value.h does not #include it any more.
...
llvm-svn: 14622
2004-07-04 12:19:56 +00:00
Misha Brukman
e38f7ed2cc
Spell out `NoFramePointerElim' for readability.
...
llvm-svn: 14299
2004-06-21 21:17:44 +00:00
Misha Brukman
a2ac4e4345
Use the common `NoFPElim' setting instead of our own.
...
llvm-svn: 14298
2004-06-21 21:10:24 +00:00
Chris Lattner
0cd29ae2cd
Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
...
llvm-svn: 14201
2004-06-17 18:19:28 +00:00
Chris Lattner
4c8b57ea31
Add support for the setp instructions
...
llvm-svn: 14140
2004-06-11 04:30:06 +00:00
Chris Lattner
5ad9eaab1a
Convert to the new TargetMachine interface.
...
llvm-svn: 13952
2004-06-02 05:55:25 +00:00
Alkis Evlogimenos
20b074682c
Add more ADC and SBB variants
...
llvm-svn: 12607
2004-04-02 07:11:10 +00:00
Chris Lattner
6c1dd729d3
Implement spill code folding for all of the conditional move instructions
...
llvm-svn: 12554
2004-03-30 21:29:47 +00:00
Alkis Evlogimenos
2b94b048a9
Another API change to MRegisterInfo::foldMemoryOperand. Instead of a
...
MachineBasicBlock::iterator take a MachineInstr*.
llvm-svn: 12392
2004-03-14 20:14:27 +00:00
Alkis Evlogimenos
ff9482b664
Change MRegisterInfo::foldMemoryOperand to return the folded
...
instruction to make the API more flexible.
llvm-svn: 12386
2004-03-14 07:19:51 +00:00
Alkis Evlogimenos
65649a50e9
Add memory operand version of conditional move.
...
llvm-svn: 12190
2004-03-07 03:19:11 +00:00
Alkis Evlogimenos
7ecfe0a839
A big X86 instruction rename. The instructions are renamed to make
...
their names more decriptive. A name consists of the base name, a
default operand size followed by a character per operand with an
optional special size. For example:
ADD8rr -> add, 8-bit register, 8-bit register
IMUL16rmi -> imul, 16-bit register, 16-bit memory, 16-bit immediate
IMUL16rmi8 -> imul, 16-bit register, 16-bit memory, 8-bit immediate
MOVSX32rm16 -> movsx, 32-bit register, 16-bit memory
llvm-svn: 11995
2004-02-29 08:50:03 +00:00
Alkis Evlogimenos
6815402082
SHLD and SHRD take 32-bit operands but an 8-bit immediate. Rename them
...
to denote this fact.
llvm-svn: 11972
2004-02-28 23:46:44 +00:00
Alkis Evlogimenos
e8dac99a43
Floating point loads/stores act on memory operands. Rename them to
...
denote this fact.
llvm-svn: 11971
2004-02-28 23:42:35 +00:00
Alkis Evlogimenos
6038a89025
Uncomment instructions that take both an immediate and a memory
...
operand but their sizes differ.
llvm-svn: 11969
2004-02-28 22:06:59 +00:00
Alkis Evlogimenos
977dbaadf7
Do not generate instructions with mismatched memory/immediate sized
...
operands. The X86 backend doesn't handle them properly right now.
llvm-svn: 11944
2004-02-28 06:01:43 +00:00
Alkis Evlogimenos
5ac109957f
Add memory operand folding support for the SETcc family of
...
instructions.
llvm-svn: 11907
2004-02-27 16:13:37 +00:00
Alkis Evlogimenos
0742b93bb9
Add memory operand folding support for SHLD and SHRD instructions.
...
llvm-svn: 11905
2004-02-27 15:03:18 +00:00
Alkis Evlogimenos
b1f67f6741
Add memory operand folding support for SHL, SHR and SAR, SHLD instructions.
...
llvm-svn: 11903
2004-02-27 09:28:43 +00:00
Alkis Evlogimenos
7f7d70a53c
Move MOTy::UseType enum into MachineOperand. This eliminates the
...
switch statements in the constructors and simplifies the
implementation of the getUseType() member function. You will have to
specify defs using MachineOperand::Def instead of MOTy::Def though
(similarly for Use and UseAndDef).
llvm-svn: 11715
2004-02-22 19:23:26 +00:00
Alkis Evlogimenos
6998610eda
When folding memory operands in machine instructions be careful to
...
leave register operands with the same use/def flags as the original
instruction.
llvm-svn: 11709
2004-02-22 06:54:26 +00:00
Chris Lattner
f58d2dd6cf
Add support for GlobalAddress's for alkis
...
llvm-svn: 11560
2004-02-17 18:23:55 +00:00
Alkis Evlogimenos
0528c59353
Instructiosn with 1 memory operand have 4 operands in our
...
representation.. duh!
llvm-svn: 11554
2004-02-17 15:58:13 +00:00
Alkis Evlogimenos
b1a61b72f2
Align case statements.
...
llvm-svn: 11552
2004-02-17 15:50:41 +00:00
Alkis Evlogimenos
b815fd46ec
Add TEST and XCHG memory operand support.
...
llvm-svn: 11550
2004-02-17 15:48:42 +00:00
Alkis Evlogimenos
32a5b0fd6c
Add OR and XOR memory operand support.
...
llvm-svn: 11549
2004-02-17 15:33:14 +00:00
Alkis Evlogimenos
135c4faa55
Add memory operand folding support for MUL, DIV, IDIV, NEG, NOT,
...
MOVSX, and MOVZX.
llvm-svn: 11546
2004-02-17 09:14:23 +00:00
Alkis Evlogimenos
e7bbd1c2fb
Add memory operand folding for CMP{rm,mr,mi}{8,16,32}, INCm{8,16,32}
...
and DECm{8,16,32} instructions.
llvm-svn: 11545
2004-02-17 08:49:20 +00:00
Alkis Evlogimenos
5aa39e1583
Add support for folding memory operands for ADC, SBB and SUB instructions.
...
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
...
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.
...
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
...
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
...
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.
...
llvm-svn: 11528
2004-02-17 06:20:20 +00:00
Chris Lattner
e227ae6b88
Change to match the newer, simpler, interface
...
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
...
llvm-svn: 11523
2004-02-17 05:46:06 +00:00
Chris Lattner
48e19d8b8e
Scrunchify code, by adding helpers. No functionality changes.
...
llvm-svn: 11522
2004-02-17 05:35:13 +00:00
Alkis Evlogimenos
c4ec9111bb
Add API to check and fold memory operands into instructions.
...
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
...
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
...
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,
...
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
...
llvm-svn: 11445
2004-02-14 06:00:36 +00:00
Alkis Evlogimenos
a31a767307
Use newly added next() and prior() utility functions.
...
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
...
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
...
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
...
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.
...
llvm-svn: 9903
2003-11-11 22:41:34 +00:00
Alkis Evlogimenos
c6a7c83333
Change all machine basic block modifier functions in MRegisterInfo to
...
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.
...
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
...
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
...
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.
...
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
...
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
...
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
...
value types
llvm-svn: 7377
2003-07-29 05:14:16 +00:00
Chris Lattner
ea424f3aff
Rename -no-* to -disable-*
...
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.
...
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
...
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
...
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
...
llvm-svn: 5201
2002-12-28 21:08:28 +00:00
Chris Lattner
a2bb8607ab
*** Implement frame pointer elimination on X86!
...
* 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
...
llvm-svn: 5148
2002-12-25 05:07:09 +00:00
Chris Lattner
8e628685d9
Fix compilation on gcc 2.96
...
llvm-svn: 5116
2002-12-23 23:46:55 +00:00
Chris Lattner
2dc1b58c11
Fix warning
...
llvm-svn: 5109
2002-12-20 04:13:28 +00:00
Chris Lattner
0b617b0e1d
Update to use new interface for register info
...
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
...
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
...
llvm-svn: 5092
2002-12-17 02:48:57 +00:00
Chris Lattner
9d64c1e53a
Fix prolog/epilog in the presence of alloca
...
llvm-svn: 5087
2002-12-16 22:29:30 +00:00
Chris Lattner
4576429b7c
Finish implementation of alias list impl
...
llvm-svn: 5083
2002-12-16 19:31:48 +00:00
Chris Lattner
b833239d6b
Try #2 to get alias set stuff to work
...
llvm-svn: 5077
2002-12-16 16:14:51 +00:00
Chris Lattner
b413ce63d5
Add info about register file aliasing
...
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!
...
llvm-svn: 5065
2002-12-15 22:38:47 +00:00
Chris Lattner
4214ac384a
Simplify interfaces used by regalloc to insert code
...
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
...
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
...
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
...
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.
...
llvm-svn: 4981
2002-12-13 04:24:53 +00:00
Misha Brukman
7dc6877ce2
Implemented functions for emitting prologues and epilogues;
...
removed EBP from the list of callee-saved registers (it isn't one).
llvm-svn: 4929
2002-12-04 23:57:03 +00:00