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Commit dbc78e1f authored by Hal Finkel's avatar Hal Finkel
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Add the PPC fcpsgn instruction 

Modern PPC cores support a floating-point copysign instruction, and we can use
this to lower the FCOPYSIGN node (which is created from calls to the libm
copysign function). A couple of extra patterns are necessary because the
operand types of FCOPYSIGN need not agree.

llvm-svn: 188653
parent 96415714
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