diff --git a/js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp b/js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp
index 6191a4b25047..57fc91f05b05 100644
--- a/js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp
+++ b/js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp
@@ -2389,7 +2389,7 @@ CodeGenerator::visitWasmAddOffset(LWasmAddOffset* lir)
     Register out = ToRegister(lir->output());
 
     Label ok;
-    masm.ma_addTestCarryClear(out, base, Imm32(mir->offset()), &ok);
+    masm.ma_addTestCarry(Assembler::CarryClear, out, base, Imm32(mir->offset()), &ok);
     masm.wasmTrap(wasm::Trap::OutOfBounds, mir->bytecodeOffset());
     masm.bind(&ok);
 }
diff --git a/js/src/jit/mips-shared/MacroAssembler-mips-shared-inl.h b/js/src/jit/mips-shared/MacroAssembler-mips-shared-inl.h
index 54d56deb7aa9..3c1362a86758 100644
--- a/js/src/jit/mips-shared/MacroAssembler-mips-shared-inl.h
+++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared-inl.h
@@ -637,8 +637,9 @@ MacroAssembler::branchAdd32(Condition cond, T src, Register dest, Label* overflo
       case Overflow:
         ma_addTestOverflow(dest, dest, src, overflow);
         break;
+      case CarryClear:
       case CarrySet:
-        ma_addTestCarry(dest, dest, src, overflow);
+        ma_addTestCarry(cond, dest, dest, src, overflow);
         break;
       default:
         MOZ_CRASH("NYI");
diff --git a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp
index 3209c392bc72..4b078509d768 100644
--- a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp
+++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp
@@ -327,19 +327,23 @@ MacroAssemblerMIPSShared::ma_addu(Register rd, Imm32 imm)
 }
 
 void
-MacroAssemblerMIPSShared::ma_addTestCarry(Register rd, Register rs, Register rt, Label* overflow)
+MacroAssemblerMIPSShared::ma_addTestCarry(Condition cond, Register rd, Register rs, Register rt,
+                                          Label* overflow)
 {
+    MOZ_ASSERT(cond == Assembler::CarrySet || cond == Assembler::CarryClear);
     MOZ_ASSERT_IF(rd == rs, rt != rd);
     as_addu(rd, rs, rt);
-    as_sltu(SecondScratchReg, rd, rd == rs? rt : rs);
-    ma_b(SecondScratchReg, SecondScratchReg, overflow, Assembler::NonZero);
+    as_sltu(SecondScratchReg, rd, rd == rs ? rt : rs);
+    ma_b(SecondScratchReg, SecondScratchReg, overflow,
+         cond == Assembler::CarrySet ? Assembler::NonZero : Assembler:: Zero);
 }
 
 void
-MacroAssemblerMIPSShared::ma_addTestCarry(Register rd, Register rs, Imm32 imm, Label* overflow)
+MacroAssemblerMIPSShared::ma_addTestCarry(Condition cond, Register rd, Register rs, Imm32 imm,
+                                          Label* overflow)
 {
     ma_li(ScratchRegister, imm);
-    ma_addTestCarry(rd, rs, ScratchRegister, overflow);
+    ma_addTestCarry(cond, rd, rs, ScratchRegister, overflow);
 }
 
 // Subtract.
diff --git a/js/src/jit/mips-shared/MacroAssembler-mips-shared.h b/js/src/jit/mips-shared/MacroAssembler-mips-shared.h
index b1eb26b94b81..53f8c0ea8c9d 100644
--- a/js/src/jit/mips-shared/MacroAssembler-mips-shared.h
+++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared.h
@@ -130,8 +130,8 @@ class MacroAssemblerMIPSShared : public Assembler
     void ma_addu(Register rd, Register rs, Imm32 imm);
     void ma_addu(Register rd, Register rs);
     void ma_addu(Register rd, Imm32 imm);
-    void ma_addTestCarry(Register rd, Register rs, Register rt, Label* overflow);
-    void ma_addTestCarry(Register rd, Register rs, Imm32 imm, Label* overflow);
+    void ma_addTestCarry(Condition cond, Register rd, Register rs, Register rt, Label* overflow);
+    void ma_addTestCarry(Condition cond, Register rd, Register rs, Imm32 imm, Label* overflow);
 
     // subtract
     void ma_subu(Register rd, Register rs, Imm32 imm);
diff --git a/js/src/jit/mips32/MacroAssembler-mips32.cpp b/js/src/jit/mips32/MacroAssembler-mips32.cpp
index 1453a1229da8..8ffd3a45d9e1 100644
--- a/js/src/jit/mips32/MacroAssembler-mips32.cpp
+++ b/js/src/jit/mips32/MacroAssembler-mips32.cpp
@@ -2473,16 +2473,18 @@ MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value, MIRType value
 
 
 void
-MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Register boundsCheckLimit, Label* label)
+MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Register boundsCheckLimit,
+                                Label* label)
 {
      ma_b(index, boundsCheckLimit, label, cond);
 }
 
 void
-MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Address boundsCheckLimit, Label* label)
+MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Address boundsCheckLimit,
+                                Label* label)
 {
     SecondScratchRegisterScope scratch2(*this);
-    load32(boundsCheckLimit,SecondScratchReg);
+    load32(boundsCheckLimit, SecondScratchReg);
     ma_b(index, SecondScratchReg, label, cond);
 }
 
diff --git a/js/src/jit/mips64/MacroAssembler-mips64.cpp b/js/src/jit/mips64/MacroAssembler-mips64.cpp
index 097b279d039e..6180f5ed7b61 100644
--- a/js/src/jit/mips64/MacroAssembler-mips64.cpp
+++ b/js/src/jit/mips64/MacroAssembler-mips64.cpp
@@ -2310,13 +2310,15 @@ MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value, MIRType value
 
 
 void
-MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Register boundsCheckLimit, Label* label)
+MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Register boundsCheckLimit,
+                                Label* label)
 {
     ma_b(index, boundsCheckLimit, label, cond);
 }
 
 void
-MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Address boundsCheckLimit, Label* label)
+MacroAssembler::wasmBoundsCheck(Condition cond, Register index, Address boundsCheckLimit,
+                                Label* label)
 {
     SecondScratchRegisterScope scratch2(*this);
     load32(boundsCheckLimit, SecondScratchReg);