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Commit 27272791 authored by Tilmann Scheller's avatar Tilmann Scheller
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[ARM] Make the assembler reject unpredictable pre/post-indexed ARM STRB instructions. 

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

llvm-svn: 213750
parent a4d18fc6
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