Yonghong Song 60fed1fef0 bpf: New optimization pass for eliminating unnecessary i32 promotions ...

This pass performs peephole optimizations to cleanup ugly code sequences at
MachineInstruction layer.

Currently, the only optimization in this pass is to eliminate type
promotion
sequences for zero extending 32-bit subregisters to 64-bit registers.

If the compiler could prove the zero extended source come from 32-bit
subregistere then it is safe to erase those promotion sequece, because the
upper half of the underlying 64-bit registers were zeroed implicitly
already.

Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Reviewed-by: Yonghong Song <yhs@fb.com>
llvm-svn: 325991

2018-02-23 23:49:32 +00:00

..

AsmParser

[Asm] Add debug tracing in table-generated assembly matcher

2017-10-11 09:17:43 +00:00

Disassembler

bpf: New decoder namespace for 32-bit subregister load/store

2018-02-23 23:49:31 +00:00

InstPrinter

bpf: add support for objdump -print-imm-hex

2017-12-20 19:39:58 +00:00

MCTargetDesc

bpf: disable DwarfUsesRelocationsAcrossSections

2018-02-21 22:59:14 +00:00

TargetInfo

Add backend name to Target to enable runtime info to be fed back into TableGen

2017-11-15 23:55:44 +00:00

BPF.h

bpf: New optimization pass for eliminating unnecessary i32 promotions

2018-02-23 23:49:32 +00:00

BPF.td

bpf: New target attribute "alu32" for 32-bit subregister support

2018-02-23 23:49:22 +00:00

BPFAsmPrinter.cpp

bpf: add inline-asm support

2017-09-18 23:29:36 +00:00

BPFCallingConv.td

bpf: New calling convention for 32-bit subregisters

2018-02-23 23:49:23 +00:00

BPFFrameLowering.cpp

…

BPFFrameLowering.h

Move TargetFrameLowering.h to CodeGen where it's implemented

2017-11-03 22:32:11 +00:00

BPFInstrFormats.td

bpf: add new insns for bswap_to_le and negation

2017-09-28 02:46:11 +00:00

BPFInstrInfo.cpp

bpf: Support 32-bit subregister in various InstrInfo hooks

2018-02-23 23:49:29 +00:00

BPFInstrInfo.h

Target/TargetInstrInfo.h -> CodeGen/TargetInstrInfo.h to match layering

2017-11-08 01:01:31 +00:00

BPFInstrInfo.td

bpf: New instruction patterns for 32-bit subregister load and store

2018-02-23 23:49:28 +00:00

BPFISelDAGToDAG.cpp

bpf: New instruction patterns for 32-bit subregister load and store

2018-02-23 23:49:28 +00:00

BPFISelLowering.cpp

bpf: Enable 32-bit subregister support for -mattr=+alu32

2018-02-23 23:49:30 +00:00

BPFISelLowering.h

bpf: Support i32 in getScalarShiftAmountTy method

2018-02-23 23:49:26 +00:00

BPFMCInstLower.cpp

…

BPFMCInstLower.h

…

BPFMIPeephole.cpp

bpf: New optimization pass for eliminating unnecessary i32 promotions

2018-02-23 23:49:32 +00:00

BPFRegisterInfo.cpp

bpf: Use markSuperRegs to mark reserved registers

2018-02-23 23:49:18 +00:00

BPFRegisterInfo.h

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

BPFRegisterInfo.td

bpf: add 32bit register set

2017-09-22 04:36:35 +00:00

BPFSubtarget.cpp

bpf: New target attribute "alu32" for 32-bit subregister support

2018-02-23 23:49:22 +00:00

BPFSubtarget.h

bpf: New target attribute "alu32" for 32-bit subregister support

2018-02-23 23:49:22 +00:00

BPFTargetMachine.cpp

bpf: New optimization pass for eliminating unnecessary i32 promotions

2018-02-23 23:49:32 +00:00

BPFTargetMachine.h

Revert "TargetMachine: Merge TargetMachine and LLVMTargetMachine"

2017-10-12 22:57:28 +00:00

CMakeLists.txt

bpf: New optimization pass for eliminating unnecessary i32 promotions

2018-02-23 23:49:32 +00:00

LLVMBuild.txt

bpf: Add BPF AsmParser support in LLVM

2017-09-12 17:55:23 +00:00