tree fa68a3b838778c89cbcd3c6f234513edbb43312e
parent 3d6094531e3790b25c43e59fd6cd0b6b99d3447c
author Vladimir Marko <vmarko@google.com> 1470146276 +0100
committer Vladimir Marko <vmarko@google.com> 1470325931 +0100

Thumb2: Clean up 16-bit LDR/STR detection.

The 16-bit LDR/STR sp, #N can be used for N = (imm8 << 2)
but it was previously used only for N < 128. This cleans up
the 16-bit instruction availability calculation for this
case as well as for byte and half word loads and stores.
However, only the LDR/STR sp, #N has impact on the code we
currently generate in Optimizing.

Reduces aosp_hammerhead-userdebug boot.oat by 108KiB.

Test: Run ART test suite on Nexus 5.
Change-Id: Ie06d130a48efad10c23f8ff2596a51efd98d0761