This will remove suboptimal branching from the generated ll/sc loops.
The extra simplification pass affects a lot of testcases, which have
been modified to accommodate this change: either by modifying the
test to become immune to the CFG simplification, or (less preferablt)
by adding option -hexagon-initial-cfg-clenaup=0.
llvm-svn: 338774
This reverts r323562, since it wasn't actually necessary. Constant-
extended offsets do not need to be aligned, as long as the effective
address is aligned.
Keep the testcase, with a modification which checks that such offsets
are not unnecessarily avoided.
llvm-svn: 323798
A correctly aligned address may happen to be separated into a variable
part and a constant part, where the constant part does not match the
alignment needed in a load/store that uses this address. Such a constant
cannot be used as an immediate offset in an indexed instruction.
When lowering a global address, make sure that if there is an offset
folded into the global, the offset is valid for all uses in load/store
instructions.
llvm-svn: 323562
Sanjay Patel