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Author SHA1 Message Date
Alkis Evlogimenos 94743e4915 When reserving a preallocated register spill the aliases of this 
register too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10450 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 11:58:10 +00:00
Alkis Evlogimenos 4c214d2bf0 Ignore non-allocatable physical registers in live interval analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10449 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 11:11:02 +00:00
Alkis Evlogimenos 7d65a12fe6 Expire any active intervals left when register allocation is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10448 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 05:50:19 +00:00
Alkis Evlogimenos f6e610c27d Add instruction numbers to debugging output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10447 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 05:48:57 +00:00
Alkis Evlogimenos 359b65f782 Add a floating point killer pass. This pass runs before register 
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
Alkis Evlogimenos 9435eda699 Handle explicit physical register defs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10445 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 05:26:39 +00:00
Alkis Evlogimenos efe995a406 Remove unecessary if statements when looping on ImplicitDefs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10444 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-13 01:20:58 +00:00
Alkis Evlogimenos a327e7fea9 Make assertion stricter. Since the source operands are allocated at 
this point, the second operand must be a physical register (it cannot
be a virtual one).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10292 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-05 11:31:39 +00:00
Alkis Evlogimenos 49787e35c3 Fix bug in register spilling when a preallocated live range overlaps a 
potential register assignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10291 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-05 11:17:55 +00:00
Alkis Evlogimenos b27ef248f5 Move operator<<(std::ostream&, const LiveInterval&) out of the header file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10290 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-05 10:38:28 +00:00
Alkis Evlogimenos 91ceae6d20 Sort live intervals by increasing start point. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10289 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-05 10:32:01 +00:00
Alkis Evlogimenos 69546d5f84 Improve debugging output and clean up some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10288 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-04 03:57:28 +00:00
Alkis Evlogimenos 585870759b Print instructions before register allocation is performed. Also fix 
bug where spill instructions were added to the next basic block
instead of the end of the current one if the instruction that required
the spill was the last in the block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10272 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-30 23:40:39 +00:00
Alkis Evlogimenos 99d1a8f048 Remove "numReloaded" statistic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10268 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-30 05:15:36 +00:00
Alkis Evlogimenos ff0cbe175d Merging the linear scan register allocator in trunk. It currently passes most tests under test/Programs/SingleSource/Benchmarks/Shootout so development will continue on trunk. The allocator is not enabled by default. You will need to pass -regallo=linearscan to lli or llc to use it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10103 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-20 03:32:25 +00:00
Alkis Evlogimenos e292da29bf Add std::pair tier. This is a much simplified version of boost::tie 
that works only for std::pair.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9723 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 05:58:26 +00:00
Alkis Evlogimenos 4dad76cea0 Update documentation since it was misleading: make it clear that a 
negative instruction count is returned if instructions are removed
from a basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9705 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:07:00 +00:00
Alkis Evlogimenos e668dab5b3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9704 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 22:57:09 +00:00
Alkis Evlogimenos 088eb45cf4 Use already existing classes for post order iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9629 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-31 03:02:34 +00:00
Alkis Evlogimenos 74fa84fcef Output types in reverse postorder. This will allow the ByteCode/Reader 
to create the minimum number of opaque types for each type with a
cycle in its type graph.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9615 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-30 21:04:44 +00:00
Alkis Evlogimenos 60048b8a66 Put DEBUG_OUTPUT at the top along with TRACE_LEVEL. Also fix the code 
inside DEBUG_OUTPUT so that it compiles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9614 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-30 18:33:58 +00:00
Alkis Evlogimenos 5d1bdcd6f6 Add more debugging info to help tracing the SlotCalculator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9575 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-29 03:12:12 +00:00
Alkis Evlogimenos 60596382aa Eliminate some extraneous code in SlotCalculator::insertVal(). 
Rename SlotCalculator::getValSlot() to SlotCalculator::getSlot(),
       SlotCalculator::insertValue() to SlotCalculator::getOrCreateSlot(),
       SlotCalculator::insertVal() to SlotCalculator::insertValue(), and
       SlotCalculator::doInsertVal() to SlotCalculator::doInsertValue().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9190 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-17 02:02:40 +00:00
Alkis Evlogimenos e7d4022f36 Someone forgot to commit an updated configure after adding tools/llvm-nm to configure.ac :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9189 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-17 00:50:38 +00:00
Alkis Evlogimenos 73ff5120eb Change MRegisterDesc::AliasSet, TargetInstrDescriptor::ImplicitDefs 
and TargetInstrDescriptor::ImplicitUses to always point to a null
terminated array and never be null. So there is no need to check for
pointer validity when iterating over those sets. Code that looked
like:

if (const unsigned* AS = TID.ImplicitDefs) {
  for (int i = 0; AS[i]; ++i) {
    // use AS[i]
  }
}

was changed to:

for (const unsigned* AS = TID.ImplicitDefs; *AS; ++AS) {
  // use *AS
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8960 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 05:20:08 +00:00
Alkis Evlogimenos 6b8b22585c Properly close anchor tags in column descriptions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8959 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 05:09:52 +00:00
Alkis Evlogimenos 185a7ab2ed Forward declare class Type since it is used in this class and Type.h is not included 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8958 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 04:45:45 +00:00
Alkis Evlogimenos 7237ecef13 Moved enum and command-line option in separate file. Also added function that returns the user selected register allocator to the caller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8819 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-02 16:57:49 +00:00
Alkis Evlogimenos eed462b685 Change llc command line for register allocators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8815 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-02 06:13:19 +00:00
Alkis Evlogimenos b5c1af4773 Use std::string::size_type for for ColonPos to stop gcc from giving a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8811 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-01 22:49:22 +00:00
Alkis Evlogimenos 77e78d050a Revert previous change. For some reason this went into the main branch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8805 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-01 19:40:13 +00:00
Alkis Evlogimenos 6ac2c8c673 Added command line option for linear scan allocator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8804 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-01 19:38:10 +00:00