LetPropertyLowering: remove redundant phis after ssa-update #82798
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This is needed after running the SSAUpdater, because the updater can insert unnecessary phis in the middle of the original liverange of a value. Fixes an ownership error. rdar://153229472
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This is needed after running the SSAUpdater, because the updater can insert unnecessary phis in the middle of the original liverange of a value.
This is the same fix as we did for LoopRotate some time ago: #78136.
Fixes an ownership error.
rdar://153229472