Displaying 1 result from an estimated 1 matches for "splat_operand".
2017 Mar 30
2
InstructionSimplify: adding a hook for shufflevector instructions
As Sanjay noted in D31426<https://reviews.llvm.org/D31426#712701>, InstructionSimplify is missing the following simplification:
This function:
define <4 x i32> @splat_operand(<4 x i32> %x) {
%splat = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> zeroinitializer
%shuf = shufflevector <4 x i32> %splat, <4 x i32> undef, <4 x i32> <i32 0, i32 3, i32 2, i32 1>
ret <4 x i32> %shuf
}
can be simplified to:...