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Author SHA1 Message Date
Chad Rosier 8983158e9d [fast-isel] Add the -verify-machineinstrs to these test cases. The remaining 
test cases require fixes to fast-isel before the verifier can be enabled.
Part of rdar://12594152

llvm-svn: 168233
 2012-11-17 00:42:06 +00:00
Chad Rosier c8cfd3a8fb Add support for emitting both signed- and zero-extend loads. Fix 
SimplifyAddress to handle either a 12-bit unsigned offset or the ARM +/-imm8
offsets (addressing mode 3).  This enables a load followed by an integer 
extend to be folded into a single load.

For example:
ldrb r1, [r0]       ldrb r1, [r0]
uxtb r2, r1     =>
mov  r3, r2         mov  r3, r1

llvm-svn: 144488
 2011-11-13 02:23:59 +00:00