Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 524 insertions, 0 deletions

diff --git a/js/src/wasm/WasmBCCodegen-inl.h b/js/src/wasm/WasmBCCodegen-inl.h
new file mode 100644
index 0000000000..03d5b9f078
--- /dev/null
+++ b/js/src/wasm/WasmBCCodegen-inl.h
@@ -0,0 +1,524 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ *
+ * Copyright 2016 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// This is an INTERNAL header for Wasm baseline compiler: inline methods in the
+// compiler for basic code generation.
+
+#ifndef wasm_wasm_baseline_codegen_inl_h
+#define wasm_wasm_baseline_codegen_inl_h
+
+// The templates for register management must be defined by the time we use the
+// templated emitters, below.
+#include "wasm/WasmBCRegMgmt-inl.h"
+
+namespace js {
+namespace wasm {
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Register-to-register moves.
+
+void BaseCompiler::moveI32(RegI32 src, RegI32 dest) {
+  if (src != dest) {
+    masm.move32(src, dest);
+  }
+}
+
+void BaseCompiler::moveI64(RegI64 src, RegI64 dest) {
+  if (src != dest) {
+    masm.move64(src, dest);
+  }
+}
+
+void BaseCompiler::moveRef(RegRef src, RegRef dest) {
+  if (src != dest) {
+    masm.movePtr(src, dest);
+  }
+}
+
+void BaseCompiler::movePtr(RegPtr src, RegPtr dest) {
+  if (src != dest) {
+    masm.movePtr(src, dest);
+  }
+}
+
+void BaseCompiler::moveF64(RegF64 src, RegF64 dest) {
+  if (src != dest) {
+    masm.moveDouble(src, dest);
+  }
+}
+
+void BaseCompiler::moveF32(RegF32 src, RegF32 dest) {
+  if (src != dest) {
+    masm.moveFloat32(src, dest);
+  }
+}
+
+#ifdef ENABLE_WASM_SIMD
+void BaseCompiler::moveV128(RegV128 src, RegV128 dest) {
+  if (src != dest) {
+    masm.moveSimd128(src, dest);
+  }
+}
+#endif
+
+template <>
+inline void BaseCompiler::move<RegI32>(RegI32 src, RegI32 dest) {
+  moveI32(src, dest);
+}
+
+template <>
+inline void BaseCompiler::move<RegI64>(RegI64 src, RegI64 dest) {
+  moveI64(src, dest);
+}
+
+template <>
+inline void BaseCompiler::move<RegF32>(RegF32 src, RegF32 dest) {
+  moveF32(src, dest);
+}
+
+template <>
+inline void BaseCompiler::move<RegF64>(RegF64 src, RegF64 dest) {
+  moveF64(src, dest);
+}
+
+template <>
+inline void BaseCompiler::move<RegRef>(RegRef src, RegRef dest) {
+  moveRef(src, dest);
+}
+
+template <>
+inline void BaseCompiler::move<RegPtr>(RegPtr src, RegPtr dest) {
+  movePtr(src, dest);
+}
+
+#ifdef ENABLE_WASM_SIMD
+template <>
+inline void BaseCompiler::move<RegV128>(RegV128 src, RegV128 dest) {
+  moveV128(src, dest);
+}
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Constant loads.
+
+void BaseCompiler::moveImm32(int32_t v, RegI32 dest) {
+  masm.move32(Imm32(v), dest);
+}
+
+void BaseCompiler::moveImm64(int64_t v, RegI64 dest) {
+  masm.move64(Imm64(v), dest);
+}
+
+void BaseCompiler::moveImmRef(intptr_t v, RegRef dest) {
+  masm.movePtr(ImmWord(v), dest);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Calls.
+
+RegI32 BaseCompiler::captureReturnedI32() {
+  RegI32 r = RegI32(ReturnReg);
+  MOZ_ASSERT(isAvailableI32(r));
+  needI32(r);
+#if defined(JS_64BIT)
+  masm.widenInt32(r);
+#endif
+  return r;
+}
+
+RegI64 BaseCompiler::captureReturnedI64() {
+  RegI64 r = RegI64(ReturnReg64);
+  MOZ_ASSERT(isAvailableI64(r));
+  needI64(r);
+  return r;
+}
+
+RegF32 BaseCompiler::captureReturnedF32(const FunctionCall& call) {
+  RegF32 r = RegF32(ReturnFloat32Reg);
+  MOZ_ASSERT(isAvailableF32(r));
+  needF32(r);
+#if defined(JS_CODEGEN_ARM)
+  if (call.usesSystemAbi && !call.hardFP) {
+    masm.ma_vxfer(ReturnReg, r);
+  }
+#endif
+  return r;
+}
+
+RegF64 BaseCompiler::captureReturnedF64(const FunctionCall& call) {
+  RegF64 r = RegF64(ReturnDoubleReg);
+  MOZ_ASSERT(isAvailableF64(r));
+  needF64(r);
+#if defined(JS_CODEGEN_ARM)
+  if (call.usesSystemAbi && !call.hardFP) {
+    masm.ma_vxfer(ReturnReg64.low, ReturnReg64.high, r);
+  }
+#endif
+  return r;
+}
+
+#ifdef ENABLE_WASM_SIMD
+RegV128 BaseCompiler::captureReturnedV128(const FunctionCall& call) {
+  RegV128 r = RegV128(ReturnSimd128Reg);
+  MOZ_ASSERT(isAvailableV128(r));
+  needV128(r);
+  return r;
+}
+#endif
+
+RegRef BaseCompiler::captureReturnedRef() {
+  RegRef r = RegRef(ReturnReg);
+  MOZ_ASSERT(isAvailableRef(r));
+  needRef(r);
+  return r;
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Miscellaneous.
+
+void BaseCompiler::trap(Trap t) const { masm.wasmTrap(t, bytecodeOffset()); }
+
+void BaseCompiler::cmp64Set(Assembler::Condition cond, RegI64 lhs, RegI64 rhs,
+                            RegI32 dest) {
+#if defined(JS_PUNBOX64)
+  masm.cmpPtrSet(cond, lhs.reg, rhs.reg, dest);
+#else
+  // TODO / OPTIMIZE (Bug 1316822): This is pretty branchy, we should be
+  // able to do better.
+  Label done, condTrue;
+  masm.branch64(cond, lhs, rhs, &condTrue);
+  moveImm32(0, dest);
+  masm.jump(&done);
+  masm.bind(&condTrue);
+  moveImm32(1, dest);
+  masm.bind(&done);
+#endif
+}
+
+[[nodiscard]] bool BaseCompiler::supportsRoundInstruction(RoundingMode mode) {
+  return Assembler::HasRoundInstruction(mode);
+}
+
+void BaseCompiler::roundF32(RoundingMode roundingMode, RegF32 f0) {
+  masm.nearbyIntFloat32(roundingMode, f0, f0);
+}
+
+void BaseCompiler::roundF64(RoundingMode roundingMode, RegF64 f0) {
+  masm.nearbyIntDouble(roundingMode, f0, f0);
+}
+
+void BaseCompiler::branchTo(Assembler::DoubleCondition c, RegF64 lhs,
+                            RegF64 rhs, Label* l) {
+  masm.branchDouble(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::DoubleCondition c, RegF32 lhs,
+                            RegF32 rhs, Label* l) {
+  masm.branchFloat(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::Condition c, RegI32 lhs, RegI32 rhs,
+                            Label* l) {
+  masm.branch32(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::Condition c, RegI32 lhs, Imm32 rhs,
+                            Label* l) {
+  masm.branch32(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::Condition c, RegI64 lhs, RegI64 rhs,
+                            Label* l) {
+  masm.branch64(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::Condition c, RegI64 lhs, Imm64 rhs,
+                            Label* l) {
+  masm.branch64(c, lhs, rhs, l);
+}
+
+void BaseCompiler::branchTo(Assembler::Condition c, RegRef lhs, ImmWord rhs,
+                            Label* l) {
+  masm.branchPtr(c, lhs, rhs, l);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Templated emitters
+
+template <>
+inline BaseCompiler& BaseCompiler::selectCompiler<BaseCompiler>() {
+  return *this;
+}
+
+template <>
+inline MacroAssembler& BaseCompiler::selectCompiler<MacroAssembler>() {
+  return masm;
+}
+
+template <typename SourceType, typename DestType>
+void BaseCompiler::emitUnop(void (*op)(MacroAssembler& masm, SourceType rs,
+                                       DestType rd)) {
+  SourceType rs = pop<SourceType>();
+  DestType rd = need<DestType>();
+  op(masm, rs, rd);
+  free(rs);
+  push(rd);
+}
+
+// Specialize narrowing reuse.  Consumers may assume that rs.reg==rd on 64-bit
+// platforms, or rs.low==rd on 32-bit platforms.
+template <>
+inline void BaseCompiler::emitUnop(void (*op)(MacroAssembler& masm, RegI64 rs,
+                                              RegI32 rd)) {
+  RegI64 rs = pop<RegI64>();
+  RegI32 rd = fromI64(rs);
+  op(masm, rs, rd);
+  freeI64Except(rs, rd);
+  push(rd);
+}
+
+template <typename CompilerType, typename RegType>
+void BaseCompiler::emitUnop(void (*op)(CompilerType& compiler, RegType rsd)) {
+  RegType rsd = pop<RegType>();
+  op(selectCompiler<CompilerType>(), rsd);
+  push(rsd);
+}
+
+template <typename RegType, typename TempType>
+void BaseCompiler::emitUnop(void (*op)(BaseCompiler& bc, RegType rsd,
+                                       TempType rt),
+                            TempType (*getSpecializedTemp)(BaseCompiler& bc)) {
+  RegType rsd = pop<RegType>();
+  TempType temp = getSpecializedTemp(*this);
+  op(*this, rsd, temp);
+  maybeFree(temp);
+  push(rsd);
+}
+
+template <typename SourceType, typename DestType, typename TempType>
+void BaseCompiler::emitUnop(void (*op)(MacroAssembler& masm, SourceType rs,
+                                       DestType rd, TempType temp)) {
+  SourceType rs = pop<SourceType>();
+  DestType rd = need<DestType>();
+  TempType temp = need<TempType>();
+  op(masm, rs, rd, temp);
+  free(rs);
+  free(temp);
+  push(rd);
+}
+
+template <typename SourceType, typename DestType, typename ImmType>
+void BaseCompiler::emitUnop(ImmType immediate,
+                            void (*op)(MacroAssembler&, ImmType, SourceType,
+                                       DestType)) {
+  SourceType rs = pop<SourceType>();
+  DestType rd = need<DestType>();
+  op(masm, immediate, rs, rd);
+  free(rs);
+  push(rd);
+}
+
+template <typename CompilerType, typename RhsType, typename LhsDestType>
+void BaseCompiler::emitBinop(void (*op)(CompilerType& masm, RhsType src,
+                                        LhsDestType srcDest)) {
+  RhsType rs = pop<RhsType>();
+  LhsDestType rsd = pop<LhsDestType>();
+  op(selectCompiler<CompilerType>(), rs, rsd);
+  free(rs);
+  push(rsd);
+}
+
+template <typename CompilerType, typename ValType>
+void BaseCompiler::emitTernary(void (*op)(CompilerType&, ValType src0,
+                                          ValType src1, ValType srcDest)) {
+  ValType src2 = pop<ValType>();
+  ValType src1 = pop<ValType>();
+  ValType srcDest = pop<ValType>();
+  op(selectCompiler<CompilerType>(), src1, src2, srcDest);
+  free(src2);
+  free(src1);
+  push(srcDest);
+}
+
+template <typename CompilerType, typename ValType>
+void BaseCompiler::emitTernary(void (*op)(CompilerType&, ValType src0,
+                                          ValType src1, ValType srcDest,
+                                          ValType temp)) {
+  ValType src2 = pop<ValType>();
+  ValType src1 = pop<ValType>();
+  ValType srcDest = pop<ValType>();
+  ValType temp = need<ValType>();
+  op(selectCompiler<CompilerType>(), src1, src2, srcDest, temp);
+  free(temp);
+  free(src2);
+  free(src1);
+  push(srcDest);
+}
+
+template <typename CompilerType, typename ValType>
+void BaseCompiler::emitTernaryResultLast(void (*op)(CompilerType&, ValType src0,
+                                                    ValType src1,
+                                                    ValType srcDest)) {
+  ValType srcDest = pop<ValType>();
+  ValType src2 = pop<ValType>();
+  ValType src1 = pop<ValType>();
+  op(selectCompiler<CompilerType>(), src1, src2, srcDest);
+  free(src2);
+  free(src1);
+  push(srcDest);
+}
+
+template <typename RhsDestType, typename LhsType>
+void BaseCompiler::emitBinop(void (*op)(MacroAssembler& masm, RhsDestType src,
+                                        LhsType srcDest, RhsDestOp)) {
+  RhsDestType rsd = pop<RhsDestType>();
+  LhsType rs = pop<LhsType>();
+  op(masm, rsd, rs, RhsDestOp::True);
+  free(rs);
+  push(rsd);
+}
+
+template <typename RhsType, typename LhsDestType, typename TempType>
+void BaseCompiler::emitBinop(void (*op)(MacroAssembler& masm, RhsType rs,
+                                        LhsDestType rsd, TempType temp)) {
+  RhsType rs = pop<RhsType>();
+  LhsDestType rsd = pop<LhsDestType>();
+  TempType temp = need<TempType>();
+  op(masm, rs, rsd, temp);
+  free(rs);
+  free(temp);
+  push(rsd);
+}
+
+template <typename RhsType, typename LhsDestType, typename TempType1,
+          typename TempType2>
+void BaseCompiler::emitBinop(void (*op)(MacroAssembler& masm, RhsType rs,
+                                        LhsDestType rsd, TempType1 temp1,
+                                        TempType2 temp2)) {
+  RhsType rs = pop<RhsType>();
+  LhsDestType rsd = pop<LhsDestType>();
+  TempType1 temp1 = need<TempType1>();
+  TempType2 temp2 = need<TempType2>();
+  op(masm, rs, rsd, temp1, temp2);
+  free(rs);
+  free(temp1);
+  free(temp2);
+  push(rsd);
+}
+
+template <typename RhsType, typename LhsDestType, typename ImmType>
+void BaseCompiler::emitBinop(ImmType immediate,
+                             void (*op)(MacroAssembler&, ImmType, RhsType,
+                                        LhsDestType)) {
+  RhsType rs = pop<RhsType>();
+  LhsDestType rsd = pop<LhsDestType>();
+  op(masm, immediate, rs, rsd);
+  free(rs);
+  push(rsd);
+}
+
+template <typename RhsType, typename LhsDestType, typename ImmType,
+          typename TempType1, typename TempType2>
+void BaseCompiler::emitBinop(ImmType immediate,
+                             void (*op)(MacroAssembler&, ImmType, RhsType,
+                                        LhsDestType, TempType1 temp1,
+                                        TempType2 temp2)) {
+  RhsType rs = pop<RhsType>();
+  LhsDestType rsd = pop<LhsDestType>();
+  TempType1 temp1 = need<TempType1>();
+  TempType2 temp2 = need<TempType2>();
+  op(masm, immediate, rs, rsd, temp1, temp2);
+  free(rs);
+  free(temp1);
+  free(temp2);
+  push(rsd);
+}
+
+template <typename CompilerType1, typename CompilerType2, typename RegType,
+          typename ImmType>
+void BaseCompiler::emitBinop(void (*op)(CompilerType1& compiler, RegType rs,
+                                        RegType rsd),
+                             void (*opConst)(CompilerType2& compiler, ImmType c,
+                                             RegType rsd),
+                             RegType (BaseCompiler::*rhsPopper)()) {
+  ImmType c;
+  if (popConst(&c)) {
+    RegType rsd = pop<RegType>();
+    opConst(selectCompiler<CompilerType2>(), c, rsd);
+    push(rsd);
+  } else {
+    RegType rs = rhsPopper ? (this->*rhsPopper)() : pop<RegType>();
+    RegType rsd = pop<RegType>();
+    op(selectCompiler<CompilerType1>(), rs, rsd);
+    free(rs);
+    push(rsd);
+  }
+}
+
+template <typename R>
+bool BaseCompiler::emitInstanceCallOp(const SymbolicAddressSignature& fn,
+                                      R reader) {
+  if (!reader()) {
+    return false;
+  }
+  if (deadCode_) {
+    return true;
+  }
+  return emitInstanceCall(fn);
+}
+
+template <typename A1, typename R>
+bool BaseCompiler::emitInstanceCallOp(const SymbolicAddressSignature& fn,
+                                      R reader) {
+  A1 arg = 0;
+  if (!reader(&arg)) {
+    return false;
+  }
+  if (deadCode_) {
+    return true;
+  }
+  push(arg);
+  return emitInstanceCall(fn);
+}
+
+template <typename A1, typename A2, typename R>
+bool BaseCompiler::emitInstanceCallOp(const SymbolicAddressSignature& fn,
+                                      R reader) {
+  A1 arg1 = 0;
+  A2 arg2 = 0;
+  if (!reader(&arg1, &arg2)) {
+    return false;
+  }
+  if (deadCode_) {
+    return true;
+  }
+  // Note order of arguments must be the same as for the reader.
+  push(arg1);
+  push(arg2);
+  return emitInstanceCall(fn);
+}
+
+}  // namespace wasm
+}  // namespace js
+
+#endif  // wasm_wasm_baseline_codegen_inl_h