Craig Topper 6b3dc96e59 [X86][GlobalISel] Replace a misuse of SUBREG_TO_REG with INSERT_SUBREG. ...

SUBREG_TO_REG is supposed to be used when we know the producing
instruction already zeroed the bits we're extending. But that's
not the case here. So INSERT_SUBREG with an IMPLICIT_DEF is the
correct thing to use.

2020-08-11 23:51:02 -07:00

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