Florian Hahn 1975ff9a0a [AArch64] Fix ldst-opt of multiple disjunct subregs. ...

Currently aarch64-ldst-opt will incorrectly rename registers with
multiple disjunct subregisters (e.g. result of LD3). This patch updates
the canRenameUpToDef to bail out if it encounters such a register class
that contains the register to rename.

Fixes PR46105.

Reviewers: efriedma, dmgreen, paquette, t.p.northover

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D81108

2020-06-08 20:18:24 +01:00

77 KiB

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