tree ac8d0450f23dd6cde9647febef8de514c5a4b8ae
parent fc22c89072e310767f8e39776195a219df851ea0
author buzbee <buzbee@google.com> 1317586109 -0700
committer buzbee <buzbee@google.com> 1317586861 -0700

Optimization fixes

Two primary fixes.  First, the save/restore mechanism for FP callee saves
was broken if there were any holes in the save mask (the Arm ld/store
multiple instructions for floating point use a start + count mechanism,
rather than the bit-mask mechanism used for core registers).

The second fix corrects a problem introduced by the recent enhancements
to loading floating point literals.  The load->copy optimization mechanism
for literal loads used the value of the loaded literal to identify
redundant loads.  However, it used only the first 32 bits of the
literal - which worked fine previously because 64-bit literal loads
were treated as a pair of 32-bit loads.  The fix was to use the
label of the literal rather than the value in the aliasInfo - which
works for all sizes.

Change-Id: Ic4779adf73b2c7d80059a988b0ecdef39921a81f