79 lines
3.2 KiB
TableGen
79 lines
3.2 KiB
TableGen
//===- WebAssemblyInstrCall.td-WebAssembly Call codegen support -*- tablegen -*-
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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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///
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/// \file
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/// WebAssembly Call operand code-gen constructs.
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///
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//===----------------------------------------------------------------------===//
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// TODO: addr64: These currently assume the callee address is 32-bit.
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// FIXME: add $type to first call_indirect asmstr (and maybe $flags)
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// Call sequence markers. These have an immediate which represents the amount of
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// stack space to allocate or free, which is used for varargs lowering.
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let Uses = [SP32, SP64], Defs = [SP32, SP64], isCodeGenOnly = 1 in {
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defm ADJCALLSTACKDOWN : NRI<(outs), (ins i32imm:$amt, i32imm:$amt2),
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[(WebAssemblycallseq_start timm:$amt, timm:$amt2)]>;
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defm ADJCALLSTACKUP : NRI<(outs), (ins i32imm:$amt, i32imm:$amt2),
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[(WebAssemblycallseq_end timm:$amt, timm:$amt2)]>;
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} // Uses = [SP32, SP64], Defs = [SP32, SP64], isCodeGenOnly = 1
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let Uses = [SP32, SP64], isCall = 1 in {
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// CALL should take both variadic arguments and produce variadic results, but
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// this is not possible to model directly. Instead, we select calls to a
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// CALL_PARAMS taking variadic arguments linked with a CALL_RESULTS that handles
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// producing the call's variadic results. We recombine the two in a custom
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// inserter hook after DAG ISel, so passes over MachineInstrs will only ever
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// observe CALL nodes with all of the expected variadic uses and defs.
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let isPseudo = 1 in
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defm CALL_PARAMS :
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I<(outs), (ins function32_op:$callee, variable_ops),
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(outs), (ins function32_op:$callee), [],
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"call_params\t$callee", "call_params\t$callee", -1>;
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let variadicOpsAreDefs = 1, usesCustomInserter = 1, isPseudo = 1 in
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defm CALL_RESULTS :
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I<(outs), (ins variable_ops), (outs), (ins), [],
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"call_results", "call_results", -1>;
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let variadicOpsAreDefs = 1, usesCustomInserter = 1, isPseudo = 1 in
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defm RET_CALL_RESULTS :
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I<(outs), (ins variable_ops), (outs), (ins), [],
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"return_call_results", "return_call_results", -1>;
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let variadicOpsAreDefs = 1 in
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defm CALL :
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I<(outs), (ins function32_op:$callee, variable_ops),
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(outs), (ins function32_op:$callee), [],
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"call", "call\t$callee", 0x10>;
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let variadicOpsAreDefs = 1 in
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defm CALL_INDIRECT :
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I<(outs), (ins TypeIndex:$type, i32imm:$flags, variable_ops),
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(outs), (ins TypeIndex:$type, i32imm:$flags), [],
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"call_indirect", "call_indirect\t$type", 0x11>;
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let isReturn = 1, isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in
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defm RET_CALL :
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I<(outs), (ins function32_op:$callee, variable_ops),
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(outs), (ins function32_op:$callee), [],
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"return_call \t$callee", "return_call\t$callee", 0x12>,
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Requires<[HasTailCall]>;
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let isReturn = 1 in
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defm RET_CALL_INDIRECT :
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I<(outs), (ins TypeIndex:$type, i32imm:$flags, variable_ops),
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(outs), (ins TypeIndex:$type, i32imm:$flags), [],
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"return_call_indirect\t", "return_call_indirect\t$type",
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0x13>,
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Requires<[HasTailCall]>;
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} // Uses = [SP32,SP64], isCall = 1
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