Commit 8ac5e30c authored by Nicolas B. Pierron's avatar Nicolas B. Pierron
Browse files

Bug 1822754 - Use a different strategy to convert integers to unsigned. r=iain, a=dsmith 

Differential Revision: https://phabricator.services.mozilla.com/D173440
parent 246b131c

js/src/jit/arm64/Lowering-arm64.cpp

+3 −3
Original line number Diff line number Diff line
@@ -574,10 +574,10 @@ void LIRGenerator::visitWasmNeg(MWasmNeg* ins) { 
void LIRGeneratorARM64::lowerUDiv(MDiv* div) {

  LAllocation lhs = useRegister(div->lhs());

  if (div->rhs()->isConstant()) {

    int32_t rhs = div->rhs()->toConstant()->toInt32();

    int32_t shift = mozilla::FloorLog2(mozilla::Abs(rhs));

    uint32_t rhs = div->rhs()->toConstant()->toInt32();

    int32_t shift = mozilla::FloorLog2(rhs);



    if (rhs != 0 && uint32_t(1) << shift == mozilla::Abs(rhs)) {

    if (rhs != 0 && uint32_t(1) << shift == rhs) {

      LDivPowTwoI* lir = new (alloc()) LDivPowTwoI(lhs, shift, false);

      if (div->fallible()) {

        assignSnapshot(lir, div->bailoutKind());