Evan Cheng
56323c761a
Only lower SELECT when using DAG based isel.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24755 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-17 01:22:13 +00:00
Chris Lattner
a763969837
remove some never-completed and now-obsolete code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24671 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-12 20:12:20 +00:00
Chris Lattner
dbdbf0ce2e
Separate X86ISelLowering stuff out from the X86ISelPattern.cpp file. Patch
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contributed by Evan Cheng.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24358 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-15 00:40:23 +00:00
Nate Begeman
73bfa71524
Remove the X86 and PowerPC Simple instruction selectors; their time has
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passed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22886 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 23:53:15 +00:00
Chris Lattner
81b6ed7ed1
Refactor things a bit to allow the ELF code emitter to run the X86 machine code emitter
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after itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22376 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 05:17:48 +00:00
Chris Lattner
efb4bf0de6
Remove prototype for non-existant function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22372 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 04:20:55 +00:00
Nate Begeman
f63be7d395
First round of support for doing scalar FP using the SSE2 ISA extension and
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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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22340 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-06 18:59:04 +00:00
Chris Lattner
07a9144efe
Add support to the X86 backend for emitting ELF files. To use this, we
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currently use: llc t.bc --filetype=obj
This will produce a t.o file which is dumpable with readelf. Currently
the file produced is empty, but the scaffolding to do more is now in place.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22292 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-27 06:30:12 +00:00
Misha Brukman
0e0a7a45d3
* Remove trailing whitespace
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* Convert tabs to spaces
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21426 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 23:38:14 +00:00
Chris Lattner
95cdb36714
Add a new prototype
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19332 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:48:33 +00:00
Chris Lattner
6f0161aac3
Add -sse[,2,3] arguments to LLC
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-24 08:18:44 +00:00
Chris Lattner
f60b91cbe3
Disable the pattern isel
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15787 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-15 23:02:17 +00:00
Chris Lattner
cc46c4fcee
Remove some (LARGE) abandoned code for the release. If this is ever needed
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again in the future, it can be resurrected out of CVS
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15112 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 21:30:35 +00:00
Jakub Staszak
0a8fd30c1b
Tablgen files for really simple instruction selector
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-06 19:34:00 +00:00
Chris Lattner
f70e0c216c
Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering
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implementation from the TargetMachine directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10636 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-28 21:23:38 +00:00
Chris Lattner
4482715f3d
implement support for the intrinsic lowering functionality
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10629 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-28 09:47:19 +00:00
Alkis Evlogimenos
359b65f782
Add a floating point killer pass. This pass runs before register
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allocaton on the X86 to add information to the machine code denoting
that our floating point stackifier cannot handle virtual point
register that are alive across basic blocks. This pass adds an
implicit def of all virtual floating point register at the end of each
basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10446 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13 05:36:22 +00:00
Chris Lattner
9b527704f7
Add an option to enable the SSA based peephole optimizer.
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Eventually this pass will provide substantially better code in the interim between when we
have a crappy isel and nice isel. Unfortunately doing so requires fixing the backend to
actually SUPPORT all of the fancy addressing modes that we now generate, and writing a DCE
pass for machine code. Each of these is a fairly substantial job, so this will remain disabled
for the immediate future. :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10276 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-01 05:18:30 +00:00
Brian Gaeke
d0fde30ce8
Put all LLVM code into the llvm namespace, as per bug 109.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11 22:41:34 +00:00
John Criswell
856ba76200
Added LLVM copyright header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9321 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-21 15:17:13 +00:00
Brian Gaeke
9826bdb7d8
Factory methods for FunctionPasses now return type FunctionPass *.
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Correct one of the functions' comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7816 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-13 18:15:29 +00:00
Chris Lattner
ac0c8680ad
Add support for a pattern matching instruction selector. This is still in
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the early implementation phases, so it is disabled by default
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7719 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-11 14:59:22 +00:00
Chris Lattner
8d44ba8c5c
Start using tablegen'd instruction enum list
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7542 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-03 21:57:05 +00:00
Chris Lattner
832003578e
Switch over to tablegen generated header files
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7512 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-03 15:48:55 +00:00
Chris Lattner
d281de2181
Rename function to be more consistent with filename
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7352 91177308-0d34-0410-b5e6-96231b3b80d8
2003-07-26 23:49:58 +00:00
Brian Gaeke
de420aee32
Printer.cpp: Ditch addRequired/getAnalysis, because they leave
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Printer::doFinalization() out in the cold. Now we pass in a TargetMachine
to Printer's constructor and get the TargetData from the TargetMachine.
Don't pass TargetMachine or MRegisterInfo objects around in the Printer.
Constify TargetData references.
X86.h: Update comment and prototype of createX86CodePrinterPass().
X86TargetMachine.cpp: Update callers of createX86CodePrinterPass().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7275 91177308-0d34-0410-b5e6-96231b3b80d8
2003-07-23 20:25:08 +00:00
Chris Lattner
ff3261ae86
Add namespace comments for doxygen
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6581 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-03 15:31:23 +00:00
Chris Lattner
31ad5dd67f
Move passes out to Passes.h
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5227 91177308-0d34-0410-b5e6-96231b3b80d8
2003-01-13 00:45:29 +00:00
Chris Lattner
f2ab4124e3
* Most pass ctor functions don't take TM arguments anymore
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* New createPrologEpilogCodeInserter() function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5181 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-28 20:26:16 +00:00
Chris Lattner
92aec04cd6
Try #2 to get alias set stuff to work
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5077 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-16 16:14:51 +00:00
Chris Lattner
c2fc7ea60b
Add info about register aliases, add prototype for createLocalRegisterAllocator
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5075 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-16 15:55:51 +00:00
Chris Lattner
1a45626c4c
Rename createSimpleX86RegisterAllocator to createSimpleRegisterAllocator
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5071 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-16 14:38:13 +00:00
Chris Lattner
4ce42a776a
* Move information about Implicit Defs/Uses into X86InstrInfo.def.
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* Expose information about implicit defs/uses of register through the
MachineInstrInfo.h file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4877 91177308-0d34-0410-b5e6-96231b3b80d8
2002-12-03 05:42:53 +00:00
Chris Lattner
6aab9cf65c
Start to add more information to instr.def
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4741 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-18 05:37:11 +00:00
Chris Lattner
b4f68ed32e
Convert backend to use passes, implement X86TargetMachine
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4421 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-29 22:37:54 +00:00
Chris Lattner
055c965bff
Rename X86InstructionInfo to X86InstrInfo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4413 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-29 21:05:24 +00:00
Chris Lattner
a535fabe7d
Be compatible with sparc backend
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4395 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-29 17:43:38 +00:00
Chris Lattner
75276f150e
Initial stab at MachineInstr'ication
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4367 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-28 23:55:19 +00:00
Chris Lattner
726140821f
Initial checkin of X86 backend.
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We can instruction select exactly one instruction 'ret void'. Wow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4284 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-25 22:55:53 +00:00