[lra-constraints] LRA inheritance undo on multiple sets problem

loongson-community / gcc

GCC source tree for Loongson

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[lra-constraints] LRA inheritance undo on multiple sets problem #3

Closed xiangzhai closed 6 years ago

xiangzhai commented 6 years ago

Hi @heiher

As PR83147 mentioned,

LRA developed by Vladimir Makarov had read from uninitialized memory issue. I think this bug might also effect other Targets, because RA is so important phase during CodeGen.

Andreas fixed the issue for GCC 8.x, please review my backport for GCC 5.5, thanks a lot!

Regards, Leslie Zhai

heiher commented 6 years ago

Merged: https://github.com/loongson-community/gcc/commit/bbb2cf93f84e8ba85127eefe17909d96d975480b

Thank you!