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8a660bd822
Searching all of the existing gc.root implementations I'm aware of (all three of them), there was exactly one use of this mechanism, and that was to implement a performance improvement that should have been applied to the default lowering. Having this function is requiring a dependency on a CodeGen class (MachineFunction), in a class which is otherwise completely independent of CodeGen. I could solve this differently, but given that I see absolutely no value in preserving this mechanism, I going to just get rid of it. Note: Tis is the first time I'm intentionally breaking previously supported gc.root functionality. Given 3.6 has branched, I believe this is a good time to do this. Differential Revision: http://reviews.llvm.org/D7004 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226305 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
//===-- ErlangGC.cpp - Erlang/OTP GC strategy -------------------*- 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 implements the Erlang/OTP runtime-compatible garbage collector
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// (e.g. defines safe points, root initialization etc.)
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//
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// The frametable emitter is in ErlangGCPrinter.cpp.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/GCs.h"
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#include "llvm/CodeGen/GCStrategy.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetSubtargetInfo.h"
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using namespace llvm;
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namespace {
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class ErlangGC : public GCStrategy {
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public:
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ErlangGC();
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};
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}
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static GCRegistry::Add<ErlangGC>
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X("erlang", "erlang-compatible garbage collector");
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void llvm::linkErlangGC() { }
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ErlangGC::ErlangGC() {
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InitRoots = false;
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NeededSafePoints = 1 << GC::PostCall;
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UsesMetadata = true;
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CustomRoots = false;
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}
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