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...cient machine code (though correct). (2) Add new LLVM instructions, "swizzle" and "merge". # A swizzle instruction acts like a channel "selector", # selecting channels from the temporary registers r1 and r2. temp_0 = swizzle.yy r1 temp_1 = swizzle.wx r2 temp_3 = add float temp_0, temp_1 temp_4 = merge.xz float temp_3, r0 But implementing swizzle and merge instructions like this seems non-trivial. I'd know if anyone knows if there is possible and ealier alternatives? Thank you.

Both the SLP vectorizer and the Loop vectorizer support vectorizing pointers. The attached code looks like a candidate for the SLP-vectorizer. Can you run the SLP-vectorizer with the flag -mllvm -debug-only=SLP and attach the log ? I think that we are missing the pattern for the roots of the tree. Thanks, Nadav On Oct 16, 2013, at 5:28 PM, Tom Stellard <tom at stellard.net> wrote: >