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add a todo for something I noticed

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23679 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2005-10-09 22:59:08 +00:00
parent ee899e6bfc
commit a19cea061e
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -40,6 +40,10 @@
// FIXME: divide by zero is currently left unfolded. do we want to turn this
// into an undef?
// FIXME: select ne (select cc, 1, 0), 0, true, false -> select cc, true, false
// FIXME: sext_inreg(SRL) -> SRA:
// int %simple(uint %X) { %tmp.4 = shr uint %X, ubyte 16
// %tmp.5 = cast uint %tmp.4 to short %tmp.6 = cast short %tmp.5 to int
// ret int %tmp.6 }
//
//===----------------------------------------------------------------------===//