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diff --git a/js/src/jit/arm/SharedICRegisters-arm.h b/js/src/jit/arm/SharedICRegisters-arm.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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_arm_SharedICRegisters_arm_h
+#define jit_arm_SharedICRegisters_arm_h
+
+#include "jit/arm/Assembler-arm.h"
+#include "jit/Registers.h"
+#include "jit/RegisterSets.h"
+
+namespace js {
+namespace jit {
+
+// r15 = program-counter
+// r14 = link-register
+// r13 = stack-pointer
+// r11 = frame-pointer
+
+// ValueOperands R0, R1, and R2.
+// R0 == JSReturnReg, and R2 uses registers not preserved across calls. R1 value
+// should be preserved across calls.
+static constexpr ValueOperand R0(r3, r2);
+static constexpr ValueOperand R1(r5, r4);
+static constexpr ValueOperand R2(r1, r0);
+
+// ICTailCallReg and ICStubReg
+// These use registers that are not preserved across calls.
+static constexpr Register ICTailCallReg = r14;
+static constexpr Register ICStubReg = r9;
+
+// Register used internally by MacroAssemblerARM.
+static constexpr Register BaselineSecondScratchReg = r6;
+
+// R7 - R9 are generally available for use within stubcode.
+
+// Note that ICTailCallReg is actually just the link register. In ARM code
+// emission, we do not clobber ICTailCallReg since we keep the return
+// address for calls there.
+
+// FloatReg0 must be equal to ReturnFloatReg.
+static constexpr FloatRegister FloatReg0 = d0;
+static constexpr FloatRegister FloatReg1 = d1;
+static constexpr FloatRegister FloatReg2 = d2;
+static constexpr FloatRegister FloatReg3 = d3;
+
+}  // namespace jit
+}  // namespace js
+
+#endif /* jit_arm_SharedICRegisters_arm_h */