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This catches many cases where we can emit a more efficient shuffle for a specific mask or when the mask contains undefs. Once the splat is lowered to unpacks we can't do that anymore. There is a possibility of moving the promotion after pshufb matching, but I'm not sure if pshufb with a mask loaded from memory is faster than 3 shuffles, so I avoided that for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173569 91177308-0d34-0410-b5e6-96231b3b80d8 |
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ARM | ||
CPP | ||
Generic | ||
Hexagon | ||
MBlaze | ||
Mips | ||
MSP430 | ||
NVPTX | ||
PowerPC | ||
R600 | ||
SI | ||
SPARC | ||
Thumb | ||
Thumb2 | ||
X86 | ||
XCore |