Bug 1025127: SIMD x86-x64 backend: implement Comparisons; a=ijibaja,dougc,bbouvier; r=sunfish
Bug 1059529: SIMD x86-x64 backend: Implement bitwise operations; a=ijibaja,dougc,bbouvier; r=sunfish
Bug 1059749: SIMD backend: implement signMask; r=sunfish
Bug 1060789: SIMD x86-x64 backend: Add 'splat' backend support; r=sunfish
Bug 1060789: Use splat constructor in Odin whenever possible; r=sunfish