http://llvm.org/bugs/show_bug.cgi?id=6044
Summary: Horizontal SIMD functions
Product: libraries
Version: 2.5
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Backend: X86
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
It would be nice to be able to use the horizontal add instruction of ix86
processors. E.g. HADDPD adds the two 'double' numbers of a SIMD register (and
does the same for another register, too). Currently I can only manually extract
the vector components with LLVM's extractelement instruction and add them,
which will be translated to ix86 assembly code this way.
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