; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -verify-machineinstrs < %s | FileCheck %s ; Test that the select returns %true, because the predicate is all active. define @select_ptrue_fold_all_active( %false, %true) { ; CHECK-LABEL: select_ptrue_fold_all_active: ; CHECK: // %bb.0: ; CHECK-NEXT: mov z0.d, z1.d ; CHECK-NEXT: ret %p = call @llvm.aarch64.sve.ptrue.nxv4i1(i32 31) %res = select %p, %true, %false ret %res } ; Test that the select returns %true, because the predicate is all active for vscale_range(2, 2) define @select_ptrue_fold_vl8( %false, %true) vscale_range(2, 2) { ; CHECK-LABEL: select_ptrue_fold_vl8: ; CHECK: // %bb.0: ; CHECK-NEXT: mov z0.d, z1.d ; CHECK-NEXT: ret %p = call @llvm.aarch64.sve.ptrue.nxv4i1(i32 8) %res = select %p, %true, %false ret %res } define @select_ptrue_fold_all_inactive( %true, %false) { ; CHECK-LABEL: select_ptrue_fold_all_inactive: ; CHECK: // %bb.0: ; CHECK-NEXT: mov z0.d, z1.d ; CHECK-NEXT: ret %p = call @llvm.aarch64.sve.convert.from.svbool.nxv16i1( zeroinitializer) %res = select %p, %true, %false ret %res } define @select_ptrue_fold_all_inactive_reinterpret( %true, %false) { ; CHECK-LABEL: select_ptrue_fold_all_inactive_reinterpret: ; CHECK: // %bb.0: ; CHECK-NEXT: mov z0.d, z1.d ; CHECK-NEXT: ret %p = call @llvm.aarch64.sve.convert.from.svbool.nxv4i1( zeroinitializer) %res = select %p, %true, %false ret %res } ; Test that the select remains, because predicate is not all active (only half lanes are set for vscale_range(2, 2)) define @select_ptrue_no_fold_vl4( %true, %false) vscale_range(2, 2) { ; CHECK-LABEL: select_ptrue_no_fold_vl4: ; CHECK: // %bb.0: ; CHECK-NEXT: ptrue p0.s, vl4 ; CHECK-NEXT: sel z0.s, p0, z0.s, z1.s ; CHECK-NEXT: ret %p = call @llvm.aarch64.sve.ptrue.nxv4i1(i32 4) %res = select %p, %true, %false ret %res } declare @llvm.aarch64.sve.ptrue.nxv4i1(i32) declare @llvm.aarch64.sve.convert.from.svbool.nxv4i1() declare @llvm.aarch64.sve.convert.from.svbool.nxv16i1()