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67d135ae40
1. Add some helper classes for partitions. They are designed in a
way such that the top-level LTO driver will not see much difference
with or without partitioning.
2. Introduce work-dir. Now all intermediate files generated during
LTO phases will be saved under work-dir. User can specify the workdir
via -lto-workdir=/path/to/dir. By default the work-dir will be
erased before linker exit. To keep the workdir, do -lto-keep, or -lto-keep=1.
TODO: Erase the workdir, if the linker exit prematurely.
We are currently not able to remove directory on signal. The support
routines simply ignore directory.
3. Add one new API lto_codegen_get_files_need_remove().
Linker and LTO plugin will communicate via this API about which files
(including directories) need to removed before linker exit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188188 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
//===---------- LTOPostIPODriver.h - PostIPO Driver -----------------------===//
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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 declare the PostIPODriver class which is the driver for
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// Post-IPO compilation phase.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LTO_POSTIPO_DRIVER_H
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#define LTO_POSTIPO_DRIVER_H
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#include "llvm/Target/TargetMachine.h"
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namespace lto {
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class IPOPartMgr;
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class IPOFileMgr;
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class IPOFile;
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class PostIPODriver {
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public:
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typedef enum {
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PIDV_Invalid,
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PIDV_SERIAL, // No partition
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PIDV_MultiThread, // Each partition is compiled by a thread
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PIDV_MultiProc, // Each partition is compiled by a process
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PIDV_MakeUtil // Partitions compilation is driven by a make-utility
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} VariantTy;
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PostIPODriver(VariantTy Var, TargetMachine *TM, IPOPartMgr &IPM,
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IPOFileMgr &IFM, bool ToMergeObjs = false);
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// Return the single resulting object file. If there is no prior
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// compilation failure, this function may return NULL iff:
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// 1) Partition is enabled, and
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// 2) Multiple partitions are generated, and
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// 3) It is not asked to merge together the objects corresponding to the
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// the partions.
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IPOFile *getSingleObjFile() const;
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bool Compile(std::string &ErrMsg);
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private:
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void *DrvImpl;
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VariantTy DrvStyle;
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};
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}
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#endif // LTO_POSTIPO_DRIVER_H
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