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Commit 8ff079c1 authored by Tilmann Scheller's avatar Tilmann Scheller
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[ARM] Make the assembler reject unpredictable pre/post-indexed ARM LDRH/LDRSH instructions. 

The ARM ARM prohibits LDRH/LDRSH instructions with writeback into the source register. With this commit this constraint is now enforced and we stop assembling LDRH/LDRSH instructions with unpredictable behavior.

llvm-svn: 214499
parent 8ba74305
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