1; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s 2 3define i64 @dotests_616() { 4; CHECK-LABEL: dotests_616 5; CHECK: mov x0, xzr 6; CHECK-NEXT: ret 7entry: 8 %0 = bitcast <2 x i64> zeroinitializer to <8 x i16> 9 %1 = and <8 x i16> zeroinitializer, %0 10 %2 = icmp ne <8 x i16> %1, zeroinitializer 11 %3 = extractelement <8 x i1> %2, i32 2 12 %vgetq_lane285 = sext i1 %3 to i16 13 %vset_lane = insertelement <4 x i16> undef, i16 %vgetq_lane285, i32 0 14 %4 = bitcast <4 x i16> %vset_lane to <1 x i64> 15 %vget_lane = extractelement <1 x i64> %4, i32 0 16 ret i64 %vget_lane 17} 18 19; PR25763 - folding constant vector comparisons with sign-extended result 20define <8 x i16> @dotests_458() { 21; CHECK-LABEL: .LCPI1_0: 22; CHECK: .hword 0 // 0x0 23; CHECK-NEXT: .hword 0 // 0x0 24; CHECK-NEXT: .hword 65535 // 0xffff 25; CHECK-NEXT: .hword 0 // 0x0 26; CHECK-NEXT: .hword 0 // 0x0 27; CHECK-NEXT: .hword 0 // 0x0 28; CHECK-NEXT: .hword 0 // 0x0 29; CHECK-NEXT: .hword 0 // 0x0 30 31; CHECK-LABEL: dotests_458 32; CHECK: adrp x8, .LCPI1_0 33; CHECK-NEXT: ldr q0, [x8, :lo12:.LCPI1_0] 34; CHECK-NEXT: ret 35entry: 36 %vclz_v.i = call <8 x i8> @llvm.ctlz.v8i8(<8 x i8> <i8 127, i8 38, i8 -1, i8 -128, i8 127, i8 0, i8 0, i8 0>, i1 false) #6 37 %vsra_n = lshr <8 x i8> %vclz_v.i, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5> 38 %name_6 = or <8 x i8> %vsra_n, <i8 127, i8 -128, i8 -1, i8 67, i8 84, i8 127, i8 -1, i8 0> 39 %cmp.i603 = icmp slt <8 x i8> %name_6, <i8 -57, i8 -128, i8 127, i8 -128, i8 -1, i8 0, i8 -1, i8 -1> 40 %vmovl.i4.i = sext <8 x i1> %cmp.i603 to <8 x i16> 41 ret <8 x i16> %vmovl.i4.i 42} 43declare <8 x i8> @llvm.ctlz.v8i8(<8 x i8>, i1) 44