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llvm-mirror/lib/Target/WebAssembly/WebAssemblyInstrExceptRef.td
Heejin Ahn b036a4a9f3 [WebAssembly] Add except_ref as a first-class type
Summary: Add except_ref as a first-class type, according to the [[https://github.com/WebAssembly/exception-handling/blob/master/proposals/Level-1.md | Level 1 exception handling proposal ]].

Reviewers: dschuff

Subscribers: jfb, sbc100, llvm-commits

Differential Revision: https://reviews.llvm.org/D43706

llvm-svn: 326985
2018-03-08 04:05:37 +00:00

30 lines
1.2 KiB
TableGen

// WebAssemblyInstrExceptRef.td-WebAssembly except_ref codegen --*- tablegen -*-
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief WebAssembly except_ref operand code-gen constructs.
///
//===----------------------------------------------------------------------===//
let Defs = [ARGUMENTS] in {
def SELECT_EXCEPT_REF : I<(outs EXCEPT_REF:$dst),
(ins EXCEPT_REF:$lhs, EXCEPT_REF:$rhs, I32:$cond),
[(set EXCEPT_REF:$dst,
(select I32:$cond, EXCEPT_REF:$lhs,
EXCEPT_REF:$rhs))],
"except_ref.select\t$dst, $lhs, $rhs, $cond", 0x1b>;
} // Defs = [ARGUMENTS]
def : Pat<(select (i32 (setne I32:$cond, 0)), EXCEPT_REF:$lhs, EXCEPT_REF:$rhs),
(SELECT_EXCEPT_REF EXCEPT_REF:$lhs, EXCEPT_REF:$rhs, I32:$cond)>;
def : Pat<(select (i32 (seteq I32:$cond, 0)), EXCEPT_REF:$lhs, EXCEPT_REF:$rhs),
(SELECT_EXCEPT_REF EXCEPT_REF:$rhs, EXCEPT_REF:$lhs, I32:$cond)>;