Index: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
===================================================================
--- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -8880,13 +8880,11 @@
   EVT VT = Op.getValueType();
 
   if (VT.getScalarType() == MVT::i1) {
-    // Lower i1 truncate to `(x & 1) != 0`.
+    // Lower i1 truncate to `x != 0`.
     SDLoc dl(Op);
     EVT OpVT = Op.getOperand(0).getValueType();
     SDValue Zero = DAG.getConstant(0, dl, OpVT);
-    SDValue One = DAG.getConstant(1, dl, OpVT);
-    SDValue And = DAG.getNode(ISD::AND, dl, OpVT, Op.getOperand(0), One);
-    return DAG.getSetCC(dl, VT, And, Zero, ISD::SETNE);
+    return DAG.getSetCC(dl, VT, Op.getOperand(0), Zero, ISD::SETNE);
   }
 
   if (!VT.isVector() || VT.isScalableVector())
Index: llvm/test/CodeGen/AArch64/sve-trunc.ll
===================================================================
--- llvm/test/CodeGen/AArch64/sve-trunc.ll
+++ llvm/test/CodeGen/AArch64/sve-trunc.ll
@@ -66,7 +66,6 @@
 ; CHECK-LABEL: trunc_i64toi1:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    and z0.d, z0.d, #0x1
 ; CHECK-NEXT:    cmpne p0.d, p0/z, z0.d, #0
 ; CHECK-NEXT:    ret
 entry:
@@ -78,8 +77,6 @@
 ; CHECK-LABEL: trunc_i64toi1_split:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    and z1.d, z1.d, #0x1
-; CHECK-NEXT:    and z0.d, z0.d, #0x1
 ; CHECK-NEXT:    cmpne p1.d, p0/z, z1.d, #0
 ; CHECK-NEXT:    cmpne p0.d, p0/z, z0.d, #0
 ; CHECK-NEXT:    uzp1 p0.s, p0.s, p1.s
@@ -93,16 +90,12 @@
 ; CHECK-LABEL: trunc_i64toi1_split2:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    and z3.d, z3.d, #0x1
-; CHECK-NEXT:    and z2.d, z2.d, #0x1
-; CHECK-NEXT:    and z1.d, z1.d, #0x1
-; CHECK-NEXT:    and z0.d, z0.d, #0x1
 ; CHECK-NEXT:    cmpne p1.d, p0/z, z3.d, #0
 ; CHECK-NEXT:    cmpne p2.d, p0/z, z2.d, #0
-; CHECK-NEXT:    uzp1 p1.s, p2.s, p1.s
-; CHECK-NEXT:    cmpne p2.d, p0/z, z1.d, #0
+; CHECK-NEXT:    cmpne p3.d, p0/z, z1.d, #0
 ; CHECK-NEXT:    cmpne p0.d, p0/z, z0.d, #0
-; CHECK-NEXT:    uzp1 p0.s, p0.s, p2.s
+; CHECK-NEXT:    uzp1 p1.s, p2.s, p1.s
+; CHECK-NEXT:    uzp1 p0.s, p0.s, p3.s
 ; CHECK-NEXT:    uzp1 p0.h, p0.h, p1.h
 ; CHECK-NEXT:    ret
 entry:
@@ -119,18 +112,10 @@
 ; CHECK-NEXT:    .cfi_escape 0x0f, 0x0c, 0x8f, 0x00, 0x11, 0x10, 0x22, 0x11, 0x08, 0x92, 0x2e, 0x00, 0x1e, 0x22 // sp + 16 + 8 * VG
 ; CHECK-NEXT:    .cfi_offset w29, -16
 ; CHECK-NEXT:    ptrue p0.d
-; CHECK-NEXT:    and z7.d, z7.d, #0x1
-; CHECK-NEXT:    and z6.d, z6.d, #0x1
-; CHECK-NEXT:    and z5.d, z5.d, #0x1
-; CHECK-NEXT:    and z4.d, z4.d, #0x1
-; CHECK-NEXT:    and z3.d, z3.d, #0x1
-; CHECK-NEXT:    and z2.d, z2.d, #0x1
 ; CHECK-NEXT:    cmpne p1.d, p0/z, z7.d, #0
 ; CHECK-NEXT:    cmpne p2.d, p0/z, z6.d, #0
 ; CHECK-NEXT:    cmpne p3.d, p0/z, z5.d, #0
 ; CHECK-NEXT:    cmpne p4.d, p0/z, z4.d, #0
-; CHECK-NEXT:    and z1.d, z1.d, #0x1
-; CHECK-NEXT:    and z0.d, z0.d, #0x1
 ; CHECK-NEXT:    uzp1 p1.s, p2.s, p1.s
 ; CHECK-NEXT:    cmpne p2.d, p0/z, z3.d, #0
 ; CHECK-NEXT:    uzp1 p3.s, p4.s, p3.s
@@ -156,7 +141,6 @@
 ; CHECK-LABEL: trunc_i32toi1:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.s
-; CHECK-NEXT:    and z0.s, z0.s, #0x1
 ; CHECK-NEXT:    cmpne p0.s, p0/z, z0.s, #0
 ; CHECK-NEXT:    ret
 entry:
@@ -168,7 +152,6 @@
 ; CHECK-LABEL: trunc_i16toi1:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.h
-; CHECK-NEXT:    and z0.h, z0.h, #0x1
 ; CHECK-NEXT:    cmpne p0.h, p0/z, z0.h, #0
 ; CHECK-NEXT:    ret
 entry:
@@ -180,7 +163,6 @@
 ; CHECK-LABEL: trunc_i8toi1:
 ; CHECK:       // %bb.0: // %entry
 ; CHECK-NEXT:    ptrue p0.b
-; CHECK-NEXT:    and z0.b, z0.b, #0x1
 ; CHECK-NEXT:    cmpne p0.b, p0/z, z0.b, #0
 ; CHECK-NEXT:    ret
 entry: