3acb187d95
This changes locals from being declared by the emitLocal hook in WebAssemblyTargetStreamer, rather than with an instruction. After exploring the infastructure in LLVM more, this seems to make more sense since declaring locals doesn't use an encoded opcode. This also adds more 0xd opcodes, type encodings, and miscellaneous binary encoding bits. llvm-svn: 285040
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
//==-- WebAssemblyTargetStreamer.h - WebAssembly Target Streamer -*- 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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/// \file
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/// \brief This file declares WebAssembly-specific target streamer classes.
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/// These are for implementing support for target-specific assembly directives.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
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#include "llvm/CodeGen/MachineValueType.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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class MCELFStreamer;
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/// WebAssembly-specific streamer interface, to implement support
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/// WebAssembly-specific assembly directives.
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class WebAssemblyTargetStreamer : public MCTargetStreamer {
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public:
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explicit WebAssemblyTargetStreamer(MCStreamer &S);
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/// .param
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virtual void emitParam(ArrayRef<MVT> Types) = 0;
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/// .result
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virtual void emitResult(ArrayRef<MVT> Types) = 0;
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/// .local
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virtual void emitLocal(ArrayRef<MVT> Types) = 0;
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/// .endfunc
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virtual void emitEndFunc() = 0;
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/// .functype
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virtual void emitIndirectFunctionType(StringRef name,
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SmallVectorImpl<MVT> &Params,
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SmallVectorImpl<MVT> &Results) {
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llvm_unreachable("emitIndirectFunctionType not implemented");
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}
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/// .indidx
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virtual void emitIndIdx(const MCExpr *Value) = 0;
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};
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/// This part is for ascii assembly output
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class WebAssemblyTargetAsmStreamer final : public WebAssemblyTargetStreamer {
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formatted_raw_ostream &OS;
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public:
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WebAssemblyTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
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void emitParam(ArrayRef<MVT> Types) override;
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void emitResult(ArrayRef<MVT> Types) override;
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void emitLocal(ArrayRef<MVT> Types) override;
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void emitEndFunc() override;
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void emitIndirectFunctionType(StringRef name,
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SmallVectorImpl<MVT> &Params,
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SmallVectorImpl<MVT> &Results) override;
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void emitIndIdx(const MCExpr *Value) override;
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};
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/// This part is for ELF object output
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class WebAssemblyTargetELFStreamer final : public WebAssemblyTargetStreamer {
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public:
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explicit WebAssemblyTargetELFStreamer(MCStreamer &S);
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void emitParam(ArrayRef<MVT> Types) override;
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void emitResult(ArrayRef<MVT> Types) override;
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void emitLocal(ArrayRef<MVT> Types) override;
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void emitEndFunc() override;
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void emitIndirectFunctionType(StringRef name,
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SmallVectorImpl<MVT> &Params,
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SmallVectorImpl<MVT> &Results) override;
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void emitIndIdx(const MCExpr *Value) override;
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};
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} // end namespace llvm
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#endif
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