1 files changed, 184 insertions, 0 deletions
diff --git a/js/src/jit/mips64/Lowering-mips64.cpp b/js/src/jit/mips64/Lowering-mips64.cpp
new file mode 100644
index 000000000..bcc61163f
--- /dev/null
+++ b/js/src/jit/mips64/Lowering-mips64.cpp
@@ -0,0 +1,184 @@
+/* -*- 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/. */
+
+#include "jit/mips64/Lowering-mips64.h"
+
+#include "jit/mips64/Assembler-mips64.h"
+
+#include "jit/MIR.h"
+
+#include "jit/shared/Lowering-shared-inl.h"
+
+using namespace js;
+using namespace js::jit;
+
+void
+LIRGeneratorMIPS64::defineInt64Phi(MPhi* phi, size_t lirIndex)
+{
+    defineTypedPhi(phi, lirIndex);
+}
+
+void
+LIRGeneratorMIPS64::lowerInt64PhiInput(MPhi* phi, uint32_t inputPosition,
+                                       LBlock* block, size_t lirIndex)
+{
+    lowerTypedPhiInput(phi, inputPosition, block, lirIndex);
+}
+
+LBoxAllocation
+LIRGeneratorMIPS64::useBoxFixed(MDefinition* mir, Register reg1, Register reg2, bool useAtStart)
+{
+    MOZ_ASSERT(mir->type() == MIRType::Value);
+
+    ensureDefined(mir);
+    return LBoxAllocation(LUse(reg1, mir->virtualRegister(), useAtStart));
+}
+
+void
+LIRGeneratorMIPS64::lowerDivI64(MDiv* div)
+{
+    if (div->isUnsigned()) {
+        lowerUDivI64(div);
+        return;
+    }
+
+    LDivOrModI64* lir = new(alloc()) LDivOrModI64(useRegister(div->lhs()), useRegister(div->rhs()),
+                                                  temp());
+    defineInt64(lir, div);
+}
+
+void
+LIRGeneratorMIPS64::lowerModI64(MMod* mod)
+{
+    if (mod->isUnsigned()) {
+        lowerUModI64(mod);
+        return;
+    }
+
+    LDivOrModI64* lir = new(alloc()) LDivOrModI64(useRegister(mod->lhs()), useRegister(mod->rhs()),
+                                                  temp());
+    defineInt64(lir, mod);
+}
+
+void
+LIRGeneratorMIPS64::lowerUDivI64(MDiv* div)
+{
+    LUDivOrModI64* lir = new(alloc()) LUDivOrModI64(useRegister(div->lhs()),
+                                                    useRegister(div->rhs()),
+                                                    temp());
+    defineInt64(lir, div);
+}
+
+void
+LIRGeneratorMIPS64::lowerUModI64(MMod* mod)
+{
+    LUDivOrModI64* lir = new(alloc()) LUDivOrModI64(useRegister(mod->lhs()),
+                                                    useRegister(mod->rhs()),
+                                                    temp());
+    defineInt64(lir, mod);
+}
+
+void
+LIRGeneratorMIPS64::visitBox(MBox* box)
+{
+    MDefinition* opd = box->getOperand(0);
+
+    // If the operand is a constant, emit near its uses.
+    if (opd->isConstant() && box->canEmitAtUses()) {
+        emitAtUses(box);
+        return;
+    }
+
+    if (opd->isConstant()) {
+        define(new(alloc()) LValue(opd->toConstant()->toJSValue()), box, LDefinition(LDefinition::BOX));
+    } else {
+        LBox* ins = new(alloc()) LBox(useRegister(opd), opd->type());
+        define(ins, box, LDefinition(LDefinition::BOX));
+    }
+}
+
+void
+LIRGeneratorMIPS64::visitUnbox(MUnbox* unbox)
+{
+    MDefinition* box = unbox->getOperand(0);
+
+    if (box->type() == MIRType::ObjectOrNull) {
+        LUnboxObjectOrNull* lir = new(alloc()) LUnboxObjectOrNull(useRegisterAtStart(box));
+        if (unbox->fallible())
+            assignSnapshot(lir, unbox->bailoutKind());
+        defineReuseInput(lir, unbox, 0);
+        return;
+    }
+
+    MOZ_ASSERT(box->type() == MIRType::Value);
+
+    LUnbox* lir;
+    if (IsFloatingPointType(unbox->type())) {
+        lir = new(alloc()) LUnboxFloatingPoint(useRegisterAtStart(box), unbox->type());
+    } else if (unbox->fallible()) {
+        // If the unbox is fallible, load the Value in a register first to
+        // avoid multiple loads.
+        lir = new(alloc()) LUnbox(useRegisterAtStart(box));
+    } else {
+        lir = new(alloc()) LUnbox(useAtStart(box));
+    }
+
+    if (unbox->fallible())
+        assignSnapshot(lir, unbox->bailoutKind());
+
+    define(lir, unbox);
+}
+
+void
+LIRGeneratorMIPS64::visitReturn(MReturn* ret)
+{
+    MDefinition* opd = ret->getOperand(0);
+    MOZ_ASSERT(opd->type() == MIRType::Value);
+
+    LReturn* ins = new(alloc()) LReturn;
+    ins->setOperand(0, useFixed(opd, JSReturnReg));
+    add(ins);
+}
+
+void
+LIRGeneratorMIPS64::defineUntypedPhi(MPhi* phi, size_t lirIndex)
+{
+    defineTypedPhi(phi, lirIndex);
+}
+
+void
+LIRGeneratorMIPS64::lowerUntypedPhiInput(MPhi* phi, uint32_t inputPosition,
+                                         LBlock* block, size_t lirIndex)
+{
+    lowerTypedPhiInput(phi, inputPosition, block, lirIndex);
+}
+
+void
+LIRGeneratorMIPS64::lowerTruncateDToInt32(MTruncateToInt32* ins)
+{
+    MDefinition* opd = ins->input();
+    MOZ_ASSERT(opd->type() == MIRType::Double);
+
+    define(new(alloc())
+           LTruncateDToInt32(useRegister(opd), tempDouble()), ins);
+}
+
+void
+LIRGeneratorMIPS64::lowerTruncateFToInt32(MTruncateToInt32* ins)
+{
+    MDefinition* opd = ins->input();
+    MOZ_ASSERT(opd->type() == MIRType::Float32);
+
+    define(new(alloc())
+           LTruncateFToInt32(useRegister(opd), tempFloat32()), ins);
+}
+
+void
+LIRGeneratorMIPS64::visitRandom(MRandom* ins)
+{
+    LRandom *lir = new(alloc()) LRandom(temp(), temp(), temp());
+    defineFixed(lir, ins, LFloatReg(ReturnDoubleReg));
+}