Jonas Paulsson 19380bae05 [SystemZ] Bugfix in expandRxSBG() ...

Csmith discovered a program that caused wrong code generation with -O0:

When handling a SIGN_EXTEND in expandRxSBG(), RxSBG.BitSize may be less than
the Input width (if a truncate was previously traversed), so maskMatters()
should be called with a masked based on the width of the sign extend result
instead.

Review: Ulrich Weigand
llvm-svn: 319892

2017-12-06 13:53:24 +00:00

50 KiB

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