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Author SHA1 Message Date
Kang Zhang
0037a5f894 [PHIElimination] Fix the killed flag for LowerPHINode() 
Summary:
In the phi-node-elimination pass, we set the killed flag incorrectly.
When we eliminate the PHI node, we replace the PHI with a copy for the
incoming value.

Before this patch, we will set incoming value as killed(PHICopy). And
we will remove the killed flag from last using incoming value(OldKill).
This is correct, only if the new PHICopy is after the OldKill.

Reviewed By: bjope

Differential Revision: https://reviews.llvm.org/D80886
 2020-07-30 08:18:50 +00:00
Kang Zhang
bfdf9ef009 Revert "[NFC][PowerPC] Add a new case to test phi-node-elimination pass" 
This case wll be failed on some machines which enable expensive-checks.

This reverts commit af3abbf7bd2213003a133c361c212ac6efb1bd2b.
 2020-05-31 09:24:21 +00:00
Kang Zhang
af3abbf7bd [NFC][PowerPC] Add a new case to test phi-node-elimination pass 2020-05-31 08:05:27 +00:00