llvm dev - Feb 2008 - [LLVMdev] Does spu backend works with scalar variable?

I compiled the following code with llvm-gcc (4.2.1) and llc (2.3svn) for spu
of Cell broadband engine processor.

 > cat add.c
 float add (float a, float b)
 {
    return a + b;
 }
 
 > llvm-gcc add.c --emit-llvm -c -o add.bc
 
 > llc -march=cellspu add.bc
 Cannot yet select: 0x867c700: v4f32 = SPUISD::INSERT_MASK 0x8670800
 Abort (core dumped)

But llc returned the above error.
If I replaced scalar variables with vector ones, It will work fine.
Does spu backend works with scalar variable?
 
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