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d39c38d2bc
Switch to MC for instruction printing. This encompasses several changes which are all interconnected: - Use the MC framework for printing almost all instructions. - AsmStrings are now live. - This introduces an indirection between LLVM vregs and WebAssembly registers, and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping. This addresses some basic issues with argument registers and unused registers. - The way ARGUMENT instructions are handled no longer generates redundant get_local+set_local for every argument. This also changes the assembly syntax somewhat; most notably, MC's printing does not use sigils on label names, so those are no longer present, and push/pop now have a sigil to keep them unambiguous. The usage of set_local/get_local/$push/$pop will continue to evolve significantly. This patch is just one step of a larger change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252910 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.9 KiB
TableGen
51 lines
1.9 KiB
TableGen
//===- WebAssemblyInstrCall.td-WebAssembly Call codegen support -*- tablegen -*-
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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 WebAssembly Call operand code-gen constructs.
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///
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//===----------------------------------------------------------------------===//
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// The call sequence start/end LLVM-isms isn't useful to WebAssembly since it's
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// a virtual ISA.
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let isCodeGenOnly = 1 in {
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def : I<(outs), (ins i64imm:$amt),
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[(WebAssemblycallseq_start timm:$amt)]>;
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def : I<(outs), (ins i64imm:$amt1, i64imm:$amt2),
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[(WebAssemblycallseq_end timm:$amt1, timm:$amt2)]>;
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} // isCodeGenOnly = 1
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multiclass CALL<WebAssemblyRegClass vt> {
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def CALL_#vt : I<(outs vt:$dst), (ins global:$callee, variable_ops),
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[(set vt:$dst, (WebAssemblycall1 (WebAssemblywrapper tglobaladdr:$callee)))],
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"call $callee, $dst">;
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def CALL_INDIRECT_#vt : I<(outs vt:$dst), (ins I32:$callee, variable_ops),
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[(set vt:$dst, (WebAssemblycall1 I32:$callee))],
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"call_indirect $callee, $dst">;
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}
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let Uses = [SP32, SP64], isCall = 1 in {
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defm : CALL<I32>;
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defm : CALL<I64>;
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defm : CALL<F32>;
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defm : CALL<F64>;
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def CALL_VOID : I<(outs), (ins global:$callee, variable_ops),
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[(WebAssemblycall0 (WebAssemblywrapper tglobaladdr:$callee))],
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"call $callee">;
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def CALL_INDIRECT_VOID : I<(outs), (ins I32:$callee, variable_ops),
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[(WebAssemblycall0 I32:$callee)],
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"call_indirect $callee">;
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} // Uses = [SP32,SP64], isCall = 1
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/*
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* TODO(jfb): Add the following.
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*
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* addressof: obtain a function pointer value for a given function
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*/
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