Vedant Kumar 1b02dad9f2 [CodeGenPrepare] Preserve debug locs in OptimizeExtractBits ...

CodeGenPrepare has a transform that sinks {lshr, trunc} pairs to make it
easier for the backend to emit fancy extract-bits instructions (e.g UBFX).

Teach it to preserve debug locations and salvage debug values.

llvm-svn: 342319

2018-09-15 04:08:52 +00:00

259 KiB

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