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

Rename all BMI MachineBasicBlock operands to MBB.

Try to mess around with emitGEPOperation's elementSizeReg to make it work,
again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5011 91177308-0d34-0410-b5e6-96231b3b80d8

Finish up iterator stuph

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5009 91177308-0d34-0410-b5e6-96231b3b80d8

Treat longs as ints => pretend they're all 32-bit values and squeeze them into
32-bit registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5008 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed bug with running out of registers. Also, reinstated namespace which
disappeared during the last checkin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5007 91177308-0d34-0410-b5e6-96231b3b80d8

Return success on success

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5006 91177308-0d34-0410-b5e6-96231b3b80d8

Test more phi stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5005 91177308-0d34-0410-b5e6-96231b3b80d8

Code gen phi's correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5004 91177308-0d34-0410-b5e6-96231b3b80d8

Print X86 PHI nodes in a sane manner

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5003 91177308-0d34-0410-b5e6-96231b3b80d8

This should handle register allocating PHI nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5002 91177308-0d34-0410-b5e6-96231b3b80d8

Added moveReg2Reg() and moveImm2Reg() to accomodate moving data around due to
PHI nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5001 91177308-0d34-0410-b5e6-96231b3b80d8

Final version of BuildMI for symmetry and because I want to use it

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5000 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/InstSelectSimple.cpp: Start counting arguments with 2,
 because arguments start two stack slots off of EBP. Break out of the
 for loop once the argument is found. Increment the counter at the end
 of the loop instead of the beginning. Use addRegOffset and compute
 the scale * index part at compile time instead of using the fancy
 load instruction. Just because an instruction set has wacky addressing
 modes doesn't mean we ought to use them (at least, if you believe Dave
 Patterson).

lib/Target/X86/X86InstrBuilder.h: Add some comments.

test/Regression/Jello/test-loadstore.ll:  Let main return int 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4999 91177308-0d34-0410-b5e6-96231b3b80d8

InstSelectSimple.cpp:  Give promote32 a comment.  Add initial
 implementation of getReg() for arguments.

MachineCodeEmitter.cpp: Fix using EBP with index, scale and no
 displacement (whew!) due to Chris.

Printer.cpp: Fix printing out index and scale in memory references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4998 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of deprecated function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4997 91177308-0d34-0410-b5e6-96231b3b80d8

return 0 on success

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4996 91177308-0d34-0410-b5e6-96231b3b80d8

Implement getelementptr constant exprs
Implement ConstantPointerRefs
Treat long/ulongs as if they were integers.  A hack, but an effective one

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4995 91177308-0d34-0410-b5e6-96231b3b80d8