Petar Avramovic e4c46ddd91 [GlobalISel] Improve elimination of dead instructions in legalizer ...

Add eraseInstr(s) utility functions. Before deleting an instruction
collects its use instructions. After deletion deletes use instructions
that became trivially dead.
This patch clears all dead instructions in existing legalizer mir tests.

Differential Revision: https://reviews.llvm.org/D109154

2021-09-20 13:00:58 +02:00

14 KiB

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