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76020ed6f3
Filling no-ops is done just before emitting of assembly, when the instruction stream is final. No-ops are inserted to align the instructions so the dual-issue of the pipeline is utilized. This speeds up generated code with a minimum of 1% on a select set of algorithms. This pass may be redundant if the instruction scheduler and all subsequent passes that modify the instruction stream (prolog+epilog inserter, register scavenger, are there others?) are made aware of the instruction alignments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123226 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1017 B
C++
36 lines
1017 B
C++
//===-- SPU.h - Top-level interface for Cell SPU Target ----------*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the entry points for global functions defined in the LLVM
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// Cell SPU back-end.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_IBMCELLSPU_H
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#define LLVM_TARGET_IBMCELLSPU_H
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class SPUTargetMachine;
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class FunctionPass;
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class formatted_raw_ostream;
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FunctionPass *createSPUISelDag(SPUTargetMachine &TM);
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FunctionPass *createSPUNopFillerPass(SPUTargetMachine &tm);
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extern Target TheCellSPUTarget;
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}
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// Defines symbolic names for the SPU instructions.
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//
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#include "SPUGenInstrNames.inc"
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#endif /* LLVM_TARGET_IBMCELLSPU_H */
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