Alex Bradbury 46db78b743 [ARM][NFC] Avoid recreating MCSubtargetInfo in ARMAsmBackend ...

After D41349, we can now directly access MCSubtargetInfo from 
createARM*AsmBackend. This patch makes use of this, avoiding the need to 
create a fresh MCSubtargetInfo (which was previously always done with a blank 
CPU and feature string). Given the total size of the change remains pretty 
tiny and we're removing the old explicit destructor, I changed the STI field 
to a reference rather than a pointer.

Differential Revision: https://reviews.llvm.org/D41693

llvm-svn: 321707

2018-01-03 13:46:21 +00:00

44 KiB

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