Add support for isnan

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5111 91177308-0d34-0410-b5e6-96231b3b80d8

Add stats output

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5110 91177308-0d34-0410-b5e6-96231b3b80d8

Fix warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5109 91177308-0d34-0410-b5e6-96231b3b80d8

CBW doesn't modify AL

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5108 91177308-0d34-0410-b5e6-96231b3b80d8

fix warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5107 91177308-0d34-0410-b5e6-96231b3b80d8

* Fix several register aliasing bugs
* Add a new option to eliminate spilling of registers that are only used
  within a basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5106 91177308-0d34-0410-b5e6-96231b3b80d8

Print argc as well as argv

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5105 91177308-0d34-0410-b5e6-96231b3b80d8

Don't force setCC instructions into AL

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5104 91177308-0d34-0410-b5e6-96231b3b80d8

Implicit defs/uses list may be empty.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5103 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments, switch uses/defs to match InstrInfo.def file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5102 91177308-0d34-0410-b5e6-96231b3b80d8

Add reg clobber list for direct calls
Represent empty use/def list as a null pointer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5101 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify interface to remove virtual function references

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5100 91177308-0d34-0410-b5e6-96231b3b80d8

Use new reginfo interface

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5099 91177308-0d34-0410-b5e6-96231b3b80d8

Update to use new interface for register info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5098 91177308-0d34-0410-b5e6-96231b3b80d8

New file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5097 91177308-0d34-0410-b5e6-96231b3b80d8

Add prolog/epilog spills/reloads to counters
Move X86 specific alignment gunk to X86 files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5096 91177308-0d34-0410-b5e6-96231b3b80d8

Round number of bytes allocated on the stack up to a multiple of 4 so that the
stack remains aligned

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5095 91177308-0d34-0410-b5e6-96231b3b80d8

Local register allocator is now stable enough for use, it passes all tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5094 91177308-0d34-0410-b5e6-96231b3b80d8

Fix many bugs, regallocator now saves callee-save registers instead of target

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5093 91177308-0d34-0410-b5e6-96231b3b80d8

Register allocator is responsible for spilling callee saved regs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5092 91177308-0d34-0410-b5e6-96231b3b80d8

Make testcase return 0 on success

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5091 91177308-0d34-0410-b5e6-96231b3b80d8

Build add instructions of the correct form!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5090 91177308-0d34-0410-b5e6-96231b3b80d8

Add dummy implementation of __main

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5089 91177308-0d34-0410-b5e6-96231b3b80d8

Two fixes:
  * Only load incoming arguments into virtual registers once at the
    beginning of the function
  * Assign different virtual registers to each reference to constants/globals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5088 91177308-0d34-0410-b5e6-96231b3b80d8

Fix prolog/epilog in the presence of alloca

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5087 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure stack manipulation refers to ESP the right number of times

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5086 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for printing out arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5085 91177308-0d34-0410-b5e6-96231b3b80d8

Add some special cases to make common getelementptr cases easier to read/faster

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5084 91177308-0d34-0410-b5e6-96231b3b80d8

Finish implementation of alias list impl

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5083 91177308-0d34-0410-b5e6-96231b3b80d8

* Fix a gross X86 hack that was intended to avoid allocating SP and BP
* Implement register alias set support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5082 91177308-0d34-0410-b5e6-96231b3b80d8

Keep the stack frame aligned.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5081 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for register alias set description

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5080 91177308-0d34-0410-b5e6-96231b3b80d8

Add mechanism to select register allocator to use

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5079 91177308-0d34-0410-b5e6-96231b3b80d8

Initial checkin of "local" register allocator.  Bugs are still present.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5078 91177308-0d34-0410-b5e6-96231b3b80d8

Try #2 to get alias set stuff to work

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5077 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5076 91177308-0d34-0410-b5e6-96231b3b80d8

Add info about register aliases, add prototype for createLocalRegisterAllocator

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5075 91177308-0d34-0410-b5e6-96231b3b80d8

Add info about register file aliasing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5074 91177308-0d34-0410-b5e6-96231b3b80d8

Add information about register file aliasing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5073 91177308-0d34-0410-b5e6-96231b3b80d8

Add call clobber info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5072 91177308-0d34-0410-b5e6-96231b3b80d8

Rename createSimpleX86RegisterAllocator to createSimpleRegisterAllocator

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5071 91177308-0d34-0410-b5e6-96231b3b80d8

Rename createSimpleX86RegisterAllocator to createSimpleRegisterAllocator.
Remvoe some dead code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5070 91177308-0d34-0410-b5e6-96231b3b80d8

brg

Fix some bugs in use of MBB vs. BB and iterators that are invalidated before
we use them.

Reference targetClass by enum name, not by number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5069 91177308-0d34-0410-b5e6-96231b3b80d8

Use -Wl,-x instead of -s: it is more portable, and in particular,
is needed on BSD (MacOS).
Also, use -Ldir instead of -L dir on the link line.  Same reason...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5068 91177308-0d34-0410-b5e6-96231b3b80d8

Some simpliciations to the spill/reload interface

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5067 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify PHI node elimination significantly by doing it as a prepass to
register allocation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5066 91177308-0d34-0410-b5e6-96231b3b80d8

Correct the setting of Def flags on registers that are modified!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5065 91177308-0d34-0410-b5e6-96231b3b80d8

Variety of small or trivial simplifications to the code, completely eliminated
the dependence on PhysRegClassMap

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5064 91177308-0d34-0410-b5e6-96231b3b80d8

Export well known instruction opcodes usable by target independant passes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5063 91177308-0d34-0410-b5e6-96231b3b80d8

Add new opIsUse method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5062 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused savePhysRegToStack method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5061 91177308-0d34-0410-b5e6-96231b3b80d8

Localize a map, remove another

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5060 91177308-0d34-0410-b5e6-96231b3b80d8

Give passes nice names!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5059 91177308-0d34-0410-b5e6-96231b3b80d8

Give simple reg allocator a nice Pass Name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5058 91177308-0d34-0410-b5e6-96231b3b80d8

Add a big assert making sure 2 address instructions are formed right

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5057 91177308-0d34-0410-b5e6-96231b3b80d8

Add new testcase for repeated preds

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5056 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a problem that occurs when PHI nodes have multiple entries for the same predecessor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5055 91177308-0d34-0410-b5e6-96231b3b80d8

Grab bag of minor cleanups.  Export some statistics about the number of
spills and reloads emitted

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5054 91177308-0d34-0410-b5e6-96231b3b80d8

Implement printing of MBB arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5053 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify interfaces used by regalloc to insert code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5052 91177308-0d34-0410-b5e6-96231b3b80d8

* Simplify code a bit by breaking the PHI node handling stuff out into a seperate
  function from normal regalloc code
* Make the regalloc for a block a function instead of part of runOnMachineBB, which
  makes it easier to see what's going on in runOnMBB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5051 91177308-0d34-0410-b5e6-96231b3b80d8

Changes to make new TargetRegisterClass interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5050 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify TargetRegisterClass a bit, also eliminating virtual function call
overhead

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5049 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove some unneccesary instance variables
* Make allocateStackSpaceFor only allocate the right amount of space

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5048 91177308-0d34-0410-b5e6-96231b3b80d8

* Simplify TargetRegisterClass implementations
* Change regclass iterators to use an extra level of pointers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5047 91177308-0d34-0410-b5e6-96231b3b80d8

* Rename const_regclass_begin/end to just regclass_begin/end
* Regclass iterators need an extra level of pointerness to work right
* Pull inverse mapping code out of target description files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5046 91177308-0d34-0410-b5e6-96231b3b80d8

pull inverse reg class mapping into a class that is sharable and out of the
target register description classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5045 91177308-0d34-0410-b5e6-96231b3b80d8

Prune #includes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5044 91177308-0d34-0410-b5e6-96231b3b80d8

Remove extraneous #includes, perform FIXME

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5043 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for structure argument problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5042 91177308-0d34-0410-b5e6-96231b3b80d8

New test to make sure I'm getting constness right

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5041 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase, courtesy of Brian Gaeke

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5040 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bug: Assembler/2002-12-15-GlobalResolve.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5039 91177308-0d34-0410-b5e6-96231b3b80d8

Allow folding together two globals through type resolution

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5038 91177308-0d34-0410-b5e6-96231b3b80d8

planes is not spelled with an O

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5037 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase identified by Brian Gaeke that breaks the C frontend...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5036 91177308-0d34-0410-b5e6-96231b3b80d8

Fix borkness with not using MachineBasicBlocks in PHI nodes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5035 91177308-0d34-0410-b5e6-96231b3b80d8

Add support to cast from a bool type
Add support for boolean constants
add getClassB method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5034 91177308-0d34-0410-b5e6-96231b3b80d8

Use MachineOperand::isFoo methods instead of our own global functions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5033 91177308-0d34-0410-b5e6-96231b3b80d8

Add capability to have a MachineBasicBlock as an operand to a MachineInstr
Add a bunch of methods to MachineOperand is* to reduce usage of MO_foo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5032 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for bool support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5031 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a huge performance problem in reassociate by introducing a
rank map cache for instruction ranks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5030 91177308-0d34-0410-b5e6-96231b3b80d8

Minor changes:
  * Reword comment to make more clear
  * Don't print out BB's after modification made
  * Don't delete and new an instruction when we need to move something, just move it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5029 91177308-0d34-0410-b5e6-96231b3b80d8

Make stuff compiled with gccld not dump into the debugger if there's a problem

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5028 91177308-0d34-0410-b5e6-96231b3b80d8

Pass command line arguments to main

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5027 91177308-0d34-0410-b5e6-96231b3b80d8

Add statistic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5026 91177308-0d34-0410-b5e6-96231b3b80d8

Test indirect call

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5025 91177308-0d34-0410-b5e6-96231b3b80d8

Implement indirect function calls

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5024 91177308-0d34-0410-b5e6-96231b3b80d8

Make function code generation printing debug-only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5023 91177308-0d34-0410-b5e6-96231b3b80d8

Made status output debug-only (for testing diffs against lli).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5022 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bork in doMultiply

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5021 91177308-0d34-0410-b5e6-96231b3b80d8

Add sanity checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5020 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a bug where moves due to phis were being neglected.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5019 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5018 91177308-0d34-0410-b5e6-96231b3b80d8

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5017 91177308-0d34-0410-b5e6-96231b3b80d8

Need to insert all moves due to PHI nodes before *ALL* jumps in a predecessor
basic block, as there could be multiple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5016 91177308-0d34-0410-b5e6-96231b3b80d8

Insert phi code at top of block

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5015 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/InstSelectSimple.cpp:

The MachineBasicBlock variable name patrol hereby fines Chris Lattner
one bag of nachos, for shadowing global names while his license to do so
was under suspension.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5014 91177308-0d34-0410-b5e6-96231b3b80d8

This should be more correct: invalidates physical registers that are used in
an instruction to avoid using them to allocate to other virtual registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5013 91177308-0d34-0410-b5e6-96231b3b80d8

Implement cast bool to X

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5012 91177308-0d34-0410-b5e6-96231b3b80d8