Amara Emerson b783aa8979 [AArch64] Fix emitting an AdrpAddLdr LOH when there's a potential clobber of the ...

def of the adrp before the ldr.

Apparently this pass used to have liveness analysis but it was removed for
scompile time reasons. This workaround prevents the LOH from being emitted
unless the ADD and LDR are adjacent.

Fixes https://github.com/JuliaLang/julia/issues/39820

Differential Revision: https://reviews.llvm.org/D97571

2021-03-01 13:52:57 -08:00

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