Add m-esr52 at 52.6.0

1 files changed, 183 insertions, 0 deletions

diff --git a/js/src/jit/x64/LIR-x64.h b/js/src/jit/x64/LIR-x64.h
new file mode 100644
index 000000000..f812ac692
--- /dev/null
+++ b/js/src/jit/x64/LIR-x64.h
@@ -0,0 +1,183 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_x64_LIR_x64_h
+#define jit_x64_LIR_x64_h
+
+namespace js {
+namespace jit {
+
+// Given an untyped input, guards on whether it's a specific type and returns
+// the unboxed payload.
+class LUnboxBase : public LInstructionHelper<1, 1, 0>
+{
+  public:
+    explicit LUnboxBase(const LAllocation& input) {
+        setOperand(0, input);
+    }
+
+    static const size_t Input = 0;
+
+    MUnbox* mir() const {
+        return mir_->toUnbox();
+    }
+};
+
+class LUnbox : public LUnboxBase {
+  public:
+    LIR_HEADER(Unbox)
+
+    explicit LUnbox(const LAllocation& input)
+      : LUnboxBase(input)
+    { }
+
+    const char* extraName() const {
+        return StringFromMIRType(mir()->type());
+    }
+};
+
+class LUnboxFloatingPoint : public LUnboxBase {
+    MIRType type_;
+
+  public:
+    LIR_HEADER(UnboxFloatingPoint)
+
+    LUnboxFloatingPoint(const LAllocation& input, MIRType type)
+      : LUnboxBase(input),
+        type_(type)
+    { }
+
+    MIRType type() const {
+        return type_;
+    }
+    const char* extraName() const {
+        return StringFromMIRType(type_);
+    }
+};
+
+// Convert a 32-bit unsigned integer to a double.
+class LWasmUint32ToDouble : public LInstructionHelper<1, 1, 0>
+{
+  public:
+    LIR_HEADER(WasmUint32ToDouble)
+
+    explicit LWasmUint32ToDouble(const LAllocation& input) {
+        setOperand(0, input);
+    }
+};
+
+// Convert a 32-bit unsigned integer to a float32.
+class LWasmUint32ToFloat32 : public LInstructionHelper<1, 1, 0>
+{
+  public:
+    LIR_HEADER(WasmUint32ToFloat32)
+
+    explicit LWasmUint32ToFloat32(const LAllocation& input) {
+        setOperand(0, input);
+    }
+};
+
+class LDivOrModI64 : public LBinaryMath<1>
+{
+  public:
+    LIR_HEADER(DivOrModI64)
+
+    LDivOrModI64(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp) {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp);
+    }
+
+    const LDefinition* remainder() {
+        return getTemp(0);
+    }
+
+    MBinaryArithInstruction* mir() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        return static_cast<MBinaryArithInstruction*>(mir_);
+    }
+    bool canBeDivideByZero() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeDivideByZero();
+        return mir_->toDiv()->canBeDivideByZero();
+    }
+    bool canBeNegativeOverflow() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeNegativeDividend();
+        return mir_->toDiv()->canBeNegativeOverflow();
+    }
+    wasm::TrapOffset trapOffset() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        if (mir_->isMod())
+            return mir_->toMod()->trapOffset();
+        return mir_->toDiv()->trapOffset();
+    }
+};
+
+// This class performs a simple x86 'div', yielding either a quotient or
+// remainder depending on whether this instruction is defined to output
+// rax (quotient) or rdx (remainder).
+class LUDivOrModI64 : public LBinaryMath<1>
+{
+  public:
+    LIR_HEADER(UDivOrModI64);
+
+    LUDivOrModI64(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp) {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp);
+    }
+
+    const LDefinition* remainder() {
+        return getTemp(0);
+    }
+
+    const char* extraName() const {
+        return mir()->isTruncated() ? "Truncated" : nullptr;
+    }
+
+    MBinaryArithInstruction* mir() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        return static_cast<MBinaryArithInstruction*>(mir_);
+    }
+
+    bool canBeDivideByZero() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeDivideByZero();
+        return mir_->toDiv()->canBeDivideByZero();
+    }
+
+    wasm::TrapOffset trapOffset() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        if (mir_->isMod())
+            return mir_->toMod()->trapOffset();
+        return mir_->toDiv()->trapOffset();
+    }
+};
+
+class LWasmTruncateToInt64 : public LInstructionHelper<1, 1, 1>
+{
+  public:
+    LIR_HEADER(WasmTruncateToInt64);
+
+    LWasmTruncateToInt64(const LAllocation& in, const LDefinition& temp) {
+        setOperand(0, in);
+        setTemp(0, temp);
+    }
+
+    MWasmTruncateToInt64* mir() const {
+        return mir_->toWasmTruncateToInt64();
+    }
+
+    const LDefinition* temp() {
+        return getTemp(0);
+    }
+};
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_x64_LIR_x64_h */