Vedant Kumar f6c0b41fb7 [InstCombine] Avoid creating mis-sized dbg.values in commonCastTransforms() ...

This prevents InstCombine from creating mis-sized dbg.values when
replacing a sequence of casts with a simpler cast. For example, in:

  (fptrunc (floor (fpext X))) -> (floorf X)

We no longer emit dbg.value(X) (with a 32-bit float operand) to describe
(fpext X) (which is a 64-bit float).

This was diagnosed by the debugify check added in r335682.

llvm-svn: 335696

2018-06-27 00:47:53 +00:00

95 KiB

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