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David Majnemer 0393a193f4 SimplifyCFG: Do not transform PHI to select if doing so would be unsafe
PR16069 is an interesting case where an incoming value to a PHI is a
trap value while also being a 'ConstantExpr'.

We do not consider this case when performing the 'HoistThenElseCodeToIf'
optimization.

Instead, make our modifications more conservative if we detect that we
cannot transform the PHI to a select.

llvm-svn: 183152
2013-06-03 20:43:12 +00:00
2013-05-22 00:35:47 +00:00
2013-05-07 20:31:28 +00:00
2013-05-22 12:37:27 +00:00
2013-06-03 19:42:57 +00:00
2012-10-09 23:48:34 +00:00
2013-05-22 00:35:47 +00:00
2013-05-09 12:32:36 +00:00
2013-05-23 02:53:22 +00:00
2013-04-17 05:34:03 +00:00

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