107c3a12d6
This patch adds a new "heap type" operand kind to the WebAssembly MC layer, used by ref.null. Currently the possible values are "extern" and "func"; when typed function references come, though, this operand may be a type index. Note that the "heap type" production is still known as "refedtype" in the draft proposal; changing its name in the spec is ongoing (https://github.com/WebAssembly/reference-types/issues/123). The register form of ref.null is still untested. Differential Revision: https://reviews.llvm.org/D90608
38 lines
1.6 KiB
TableGen
38 lines
1.6 KiB
TableGen
// WebAssemblyInstrRef.td - WebAssembly reference type codegen --*- 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 reference type operand codegen constructs.
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///
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//===----------------------------------------------------------------------===//
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defm SELECT_EXNREF : I<(outs EXNREF:$dst),
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(ins EXNREF:$lhs, EXNREF:$rhs, I32:$cond),
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(outs), (ins),
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[(set EXNREF:$dst,
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(select I32:$cond, EXNREF:$lhs, EXNREF:$rhs))],
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"exnref.select\t$dst, $lhs, $rhs, $cond",
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"exnref.select", 0x1b>;
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def : Pat<(select (i32 (setne I32:$cond, 0)), EXNREF:$lhs, EXNREF:$rhs),
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(SELECT_EXNREF EXNREF:$lhs, EXNREF:$rhs, I32:$cond)>;
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def : Pat<(select (i32 (seteq I32:$cond, 0)), EXNREF:$lhs, EXNREF:$rhs),
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(SELECT_EXNREF EXNREF:$rhs, EXNREF:$lhs, I32:$cond)>;
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multiclass REF<WebAssemblyRegClass rt> {
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defm REF_NULL_#rt : I<(outs rt:$res), (ins HeapType:$heaptype),
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(outs), (ins HeapType:$heaptype),
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[],
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"ref.null\t$res, $heaptype",
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"ref.null\t$heaptype",
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0xd0>;
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}
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defm "" : REF<FUNCREF>, Requires<[HasReferenceTypes]>;
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defm "" : REF<EXTERNREF>, Requires<[HasReferenceTypes]>;
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