Andrew Wei 78071fb524 [LSR] Canonicalize a formula before insert it into the list ...

In GenerateConstantOffsetsImpl, we may generate non canonical Formula
if BaseRegs of that Formula is updated and includes a recurrent expr reg
related with current loop while its ScaledReg is not.

Patched by: mdchen
Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D86939

2020-09-08 13:14:53 +08:00

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