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1053847
2016 Mar 16
3
RFC: A change in InstCombine canonical form
=== PROBLEM === (See this bug https://llvm.org/bugs/show_bug.cgi?id=26445)
IR contains code for loading a float from float * and storing it to a float
* address. After canonicalization of load in InstCombine [1], new bitcasts
are added to the IR (see bottom of the email for code samples). This
prevents select speculation in SROA to work. Also after SROA we have
bitcasts from int32 to float.