llvm-project/llvm/test/Transforms/InstCombine/bitcast-scalar-to-vector.ll

15 lines
366 B
LLVM

; RUN: opt < %s -instcombine -S | grep {ret i32 0}
; PR4487
; Bitcasts between vectors and scalars are valid, despite being ill-advised.
define i32 @test(i64 %a) {
bb20:
%t1 = bitcast i64 %a to <2 x i32>
%t2 = bitcast i64 %a to <2 x i32>
%t3 = xor <2 x i32> %t1, %t2
%t4 = extractelement <2 x i32> %t3, i32 0
ret i32 %t4
}