be6c4d933d
AIX has "millicode" routines, which are functions loaded at boot time into fixed addresses in kernel memory. This allows them to be customized for the processor. The __strlen routine is a millicode implementation; we use millicode for the strlen function instead of a library call to improve performance.
38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "PPCSelectionDAGInfo.h"
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#include "PPCISelLowering.h"
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using namespace llvm;
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PPCSelectionDAGInfo::~PPCSelectionDAGInfo() = default;
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bool PPCSelectionDAGInfo::isTargetMemoryOpcode(unsigned Opcode) const {
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return Opcode >= PPCISD::FIRST_MEMORY_OPCODE &&
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Opcode <= PPCISD::LAST_MEMORY_OPCODE;
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}
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bool PPCSelectionDAGInfo::isTargetStrictFPOpcode(unsigned Opcode) const {
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return Opcode >= PPCISD::FIRST_STRICTFP_OPCODE &&
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Opcode <= PPCISD::LAST_STRICTFP_OPCODE;
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}
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std::pair<SDValue, SDValue> PPCSelectionDAGInfo::EmitTargetCodeForMemcmp(
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SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2,
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SDValue Op3, const CallInst *CI) const {
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return DAG.getMemcmp(Chain, dl, Op1, Op2, Op3, CI);
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}
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std::pair<SDValue, SDValue>
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PPCSelectionDAGInfo::EmitTargetCodeForStrlen(SelectionDAG &DAG, const SDLoc &DL,
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SDValue Chain, SDValue Src,
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const CallInst *CI) const {
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return DAG.getStrlen(Chain, DL, Src, CI);
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}
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