llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-20 12:31:40 +00:00

History

Evan Cheng baeccc8741 GEP index sinking fixes:

1) Take address scale into consideration. e.g. i32* -> scale 4.
2) Examine all the users of GEP.
3) Generalize to inter-block GEP's (no longer uses loopinfo).
4) Don't do xform if GEP has other variable index(es).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35403 91177308-0d34-0410-b5e6-96231b3b80d8

2007-03-28 01:49:39 +00:00

SelectionDAG

GEP index sinking fixes:

2007-03-28 01:49:39 +00:00

AsmPrinter.cpp

Small eye-candy: use asciz directive everywhere, where possible.

2007-03-06 19:25:02 +00:00

BranchFolding.cpp

maintain LiveIn when splitting blocks (register scavenging needs it)

2007-03-20 21:35:06 +00:00

DwarfWriter.cpp

Cleanup: make SetCounter an instance variable

2007-03-07 08:25:02 +00:00

ELFWriter.cpp

Generalize TargetData strings, to support more interesting forms of data.

2007-02-14 05:52:17 +00:00

ELFWriter.h

Moved from include/llvm/CodeGen to lib/CodeGen.

2007-02-08 01:30:50 +00:00

IntrinsicLowering.cpp

Lower eh filter intrinsic.

2007-03-01 20:24:30 +00:00

LiveInterval.cpp

…

LiveIntervalAnalysis.cpp

Fix for PR1279. Dead def has a live interval of length 1. Copy coalescing should

2007-03-28 01:30:37 +00:00

LiveVariables.cpp

Track the BB's where each virtual register is used.

2007-03-17 09:29:54 +00:00

LLVMTargetMachine.cpp

Now LoopStrengthReduce is a LoopPass.

2007-03-06 21:14:09 +00:00

MachineBasicBlock.cpp

Print preds / succs BB numbers.

2007-03-09 08:29:08 +00:00

MachineFunction.cpp

Generalize TargetData strings, to support more interesting forms of data.

2007-02-14 05:52:17 +00:00

MachineInstr.cpp

Change findRegisterUseOperand() to return operand index instead.

2007-03-26 22:37:45 +00:00

MachineModuleInfo.cpp

Collect eh filter info.

2007-03-01 20:25:32 +00:00

MachinePassRegistry.cpp

…

MachOWriter.cpp

Remove unneeded header file.

2007-03-04 04:41:04 +00:00

MachOWriter.h

More Mach-O writer improvements.

2007-02-28 07:40:50 +00:00

Makefile

…

Passes.cpp

…

PHIElimination.cpp

Keep UsedBlocks info accurate.

2007-03-18 09:02:31 +00:00

PhysRegTracker.h

…

PrologEpilogInserter.cpp

If target decides to create an emergency spill slot, make sure it's closest to SP or frame pointer.

2007-03-06 10:02:38 +00:00

README.txt

Potential spiller improvement.

2007-03-20 22:22:38 +00:00

RegAllocLinearScan.cpp

First cut trivial re-materialization support.

2007-03-20 08:13:50 +00:00

RegAllocLocal.cpp

Use BitVector instead of vector<bool> which can be extremely slow.

2007-02-15 05:59:24 +00:00

RegAllocSimple.cpp

…

RegisterScavenging.cpp

Fix reversed logic in getRegsUsed. Rename RegStates to RegsAvailable to

2007-03-26 22:23:54 +00:00

TwoAddressInstructionPass.cpp

Keep UsedBlocks info accurate.

2007-03-18 09:02:31 +00:00

UnreachableBlockElim.cpp

…

VirtRegMap.cpp

Don't call getOperandConstraint() if operand index is greater than

2007-03-27 00:48:28 +00:00

VirtRegMap.h

First cut trivial re-materialization support.

2007-03-20 08:13:50 +00:00

README.txt

Common register allocation / spilling problem:

	mul lr, r4, lr
	str lr, [sp, #+52]
	ldr lr, [r1, #+32]
	sxth r3, r3
	ldr r4, [sp, #+52]
	mla r4, r3, lr, r4

can be:

	mul lr, r4, lr
        mov r4, lr
	str lr, [sp, #+52]
	ldr lr, [r1, #+32]
	sxth r3, r3
	mla r4, r3, lr, r4

and then "merge" mul and mov:

	mul r4, r4, lr
	str lr, [sp, #+52]
	ldr lr, [r1, #+32]
	sxth r3, r3
	mla r4, r3, lr, r4

It also increase the likelyhood the store may become dead.