diff options
Diffstat (limited to 'contrib/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td')
| -rw-r--r-- | contrib/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td deleted file mode 100644 index 1870c5bc34b0..000000000000 --- a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td +++ /dev/null @@ -1,191 +0,0 @@ -//===- WebAssemblyInstrControl.td-WebAssembly control-flow ------*- tablegen -*- -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -/// -/// \file -/// WebAssembly control-flow code-gen constructs. -/// -//===----------------------------------------------------------------------===// - -let isBranch = 1, isTerminator = 1, hasCtrlDep = 1 in { -// The condition operand is a boolean value which WebAssembly represents as i32. -defm BR_IF : I<(outs), (ins bb_op:$dst, I32:$cond), - (outs), (ins bb_op:$dst), - [(brcond I32:$cond, bb:$dst)], - "br_if \t$dst, $cond", "br_if \t$dst", 0x0d>; -let isCodeGenOnly = 1 in -defm BR_UNLESS : I<(outs), (ins bb_op:$dst, I32:$cond), - (outs), (ins bb_op:$dst), []>; -let isBarrier = 1 in -defm BR : NRI<(outs), (ins bb_op:$dst), - [(br bb:$dst)], - "br \t$dst", 0x0c>; -} // isBranch = 1, isTerminator = 1, hasCtrlDep = 1 - -def : Pat<(brcond (i32 (setne I32:$cond, 0)), bb:$dst), - (BR_IF bb_op:$dst, I32:$cond)>; -def : Pat<(brcond (i32 (seteq I32:$cond, 0)), bb:$dst), - (BR_UNLESS bb_op:$dst, I32:$cond)>; - -// A list of branch targets enclosed in {} and separated by comma. -// Used by br_table only. -def BrListAsmOperand : AsmOperandClass { let Name = "BrList"; } -let OperandNamespace = "WebAssembly", OperandType = "OPERAND_BRLIST" in -def brlist : Operand<i32> { - let ParserMatchClass = BrListAsmOperand; - let PrintMethod = "printBrList"; -} - -// TODO: SelectionDAG's lowering insists on using a pointer as the index for -// jump tables, so in practice we don't ever use BR_TABLE_I64 in wasm32 mode -// currently. -let isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in { -defm BR_TABLE_I32 : I<(outs), (ins I32:$index, variable_ops), - (outs), (ins brlist:$brl), - [(WebAssemblybr_table I32:$index)], - "br_table \t$index", "br_table \t$brl", - 0x0e>; -defm BR_TABLE_I64 : I<(outs), (ins I64:$index, variable_ops), - (outs), (ins brlist:$brl), - [(WebAssemblybr_table I64:$index)], - "br_table \t$index", "br_table \t$brl", - 0x0e>; -} // isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 - -// This is technically a control-flow instruction, since all it affects is the -// IP. -defm NOP : NRI<(outs), (ins), [], "nop", 0x01>; - -// Placemarkers to indicate the start or end of a block or loop scope. -// These use/clobber VALUE_STACK to prevent them from being moved into the -// middle of an expression tree. -let Uses = [VALUE_STACK], Defs = [VALUE_STACK] in { -defm BLOCK : NRI<(outs), (ins Signature:$sig), [], "block \t$sig", 0x02>; -defm LOOP : NRI<(outs), (ins Signature:$sig), [], "loop \t$sig", 0x03>; - -defm IF : I<(outs), (ins Signature:$sig, I32:$cond), - (outs), (ins Signature:$sig), - [], "if \t$sig, $cond", "if \t$sig", 0x04>; -defm ELSE : NRI<(outs), (ins), [], "else", 0x05>; - -// END_BLOCK, END_LOOP, END_IF and END_FUNCTION are represented with the same -// opcode in wasm. -defm END_BLOCK : NRI<(outs), (ins), [], "end_block", 0x0b>; -defm END_LOOP : NRI<(outs), (ins), [], "end_loop", 0x0b>; -defm END_IF : NRI<(outs), (ins), [], "end_if", 0x0b>; -// Generic instruction, for disassembler. -let IsCanonical = 1 in -defm END : NRI<(outs), (ins), [], "end", 0x0b>; -let isTerminator = 1, isBarrier = 1 in -defm END_FUNCTION : NRI<(outs), (ins), [], "end_function", 0x0b>; -} // Uses = [VALUE_STACK], Defs = [VALUE_STACK] - -multiclass RETURN<WebAssemblyRegClass vt> { - defm RETURN_#vt : I<(outs), (ins vt:$val), (outs), (ins), - [(WebAssemblyreturn vt:$val)], - "return \t$val", "return", 0x0f>; - // Equivalent to RETURN_#vt, for use at the end of a function when wasm - // semantics return by falling off the end of the block. - let isCodeGenOnly = 1 in - defm FALLTHROUGH_RETURN_#vt : I<(outs), (ins vt:$val), (outs), (ins), []>; -} - -multiclass SIMD_RETURN<ValueType vt> { - defm RETURN_#vt : I<(outs), (ins V128:$val), (outs), (ins), - [(WebAssemblyreturn (vt V128:$val))], - "return \t$val", "return", 0x0f>, - Requires<[HasSIMD128]>; - // Equivalent to RETURN_#vt, for use at the end of a function when wasm - // semantics return by falling off the end of the block. - let isCodeGenOnly = 1 in - defm FALLTHROUGH_RETURN_#vt : I<(outs), (ins V128:$val), (outs), (ins), - []>, - Requires<[HasSIMD128]>; -} - -let isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in { - -let isReturn = 1 in { - defm "": RETURN<I32>; - defm "": RETURN<I64>; - defm "": RETURN<F32>; - defm "": RETURN<F64>; - defm "": RETURN<EXNREF>; - defm "": SIMD_RETURN<v16i8>; - defm "": SIMD_RETURN<v8i16>; - defm "": SIMD_RETURN<v4i32>; - defm "": SIMD_RETURN<v2i64>; - defm "": SIMD_RETURN<v4f32>; - defm "": SIMD_RETURN<v2f64>; - - defm RETURN_VOID : NRI<(outs), (ins), [(WebAssemblyreturn)], "return", 0x0f>; - - // This is to RETURN_VOID what FALLTHROUGH_RETURN_#vt is to RETURN_#vt. - let isCodeGenOnly = 1 in - defm FALLTHROUGH_RETURN_VOID : NRI<(outs), (ins), []>; -} // isReturn = 1 - -defm UNREACHABLE : NRI<(outs), (ins), [(trap)], "unreachable", 0x00>; -} // isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 - -//===----------------------------------------------------------------------===// -// Exception handling instructions -//===----------------------------------------------------------------------===// - -let Predicates = [HasExceptionHandling] in { - -// Throwing an exception: throw / rethrow -let isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in { -defm THROW : I<(outs), (ins event_op:$tag, variable_ops), - (outs), (ins event_op:$tag), - [(WebAssemblythrow (WebAssemblywrapper texternalsym:$tag))], - "throw \t$tag", "throw \t$tag", 0x08>; -defm RETHROW : I<(outs), (ins EXNREF:$exn), (outs), (ins), [], - "rethrow \t$exn", "rethrow", 0x09>; -// Pseudo instruction to be the lowering target of int_wasm_rethrow_in_catch -// intrinsic. Will be converted to the real rethrow instruction later. -let isPseudo = 1 in -defm RETHROW_IN_CATCH : NRI<(outs), (ins), [(int_wasm_rethrow_in_catch)], - "rethrow_in_catch", 0>; -} // isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 - -// Region within which an exception is caught: try / end_try -let Uses = [VALUE_STACK], Defs = [VALUE_STACK] in { -defm TRY : NRI<(outs), (ins Signature:$sig), [], "try \t$sig", 0x06>; -defm END_TRY : NRI<(outs), (ins), [], "end_try", 0x0b>; -} // Uses = [VALUE_STACK], Defs = [VALUE_STACK] - -// Catching an exception: catch / extract_exception -let hasCtrlDep = 1, hasSideEffects = 1 in -defm CATCH : I<(outs EXNREF:$dst), (ins), (outs), (ins), [], - "catch \t$dst", "catch", 0x07>; - -// Querying / extracing exception: br_on_exn -// br_on_exn queries an exnref to see if it matches the corresponding exception -// tag index. If true it branches to the given label and pushes the -// corresponding argument values of the exception onto the stack. -let isBranch = 1, isTerminator = 1, hasCtrlDep = 1 in -defm BR_ON_EXN : I<(outs), (ins bb_op:$dst, event_op:$tag, EXNREF:$exn), - (outs), (ins bb_op:$dst, event_op:$tag), [], - "br_on_exn \t$dst, $tag, $exn", "br_on_exn \t$dst, $tag", - 0x0a>; -// This is a pseudo instruction that simulates popping a value from stack, which -// has been pushed by br_on_exn -let isCodeGenOnly = 1, hasSideEffects = 1 in -defm EXTRACT_EXCEPTION_I32 : NRI<(outs I32:$dst), (ins), - [(set I32:$dst, (int_wasm_extract_exception))], - "extract_exception\t$dst">; - -// Pseudo instructions: cleanupret / catchret -let isTerminator = 1, hasSideEffects = 1, isBarrier = 1, hasCtrlDep = 1, - isPseudo = 1, isEHScopeReturn = 1 in { - defm CLEANUPRET : NRI<(outs), (ins), [(cleanupret)], "cleanupret", 0>; - defm CATCHRET : NRI<(outs), (ins bb_op:$dst, bb_op:$from), - [(catchret bb:$dst, bb:$from)], "catchret", 0>; -} // isTerminator = 1, hasSideEffects = 1, isBarrier = 1, hasCtrlDep = 1, - // isPseudo = 1, isEHScopeReturn = 1 -} // Predicates = [HasExceptionHandling] |