Jim Grosbach 06c2a68125 ARM: Fix more fast-isel verifier failures. ...

Teach the generic instruction selection helper functions to constrain
the register classes of their input operands. For non-physical register
references, the generic code needs to be careful not to mess that up
when replacing references to result registers. As the comment indicates
for MachineRegisterInfo::replaceRegWith(), it's important to call
constrainRegClass() first.

rdar://12594152

llvm-svn: 188593

2013-08-16 23:37:31 +00:00

4.0 KiB

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