Turn off optimizations due to undefined behavior in assembler-arm.cc:fits_shifter.

Without this temporary fix, fits_shifter()'s undefined behavior results in broken
code. This change disables optimization on the host for the ARM target, which just
slows down host-side compilation. A future update to v8 removes the undefined
behavior and can turn optimizations back on.

Change-Id: Ib695f31354171b45ff6b8c52abacc2abde1856e4
1 file changed