1*9880d681SAndroid Build Coastguard Worker; Test shortening of NILL to NILF when the result is used as a shift amount. 2*9880d681SAndroid Build Coastguard Worker; 3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; Test logical shift right. 6*9880d681SAndroid Build Coastguard Workerdefine i32 @f1(i32 %a, i32 %sh) { 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f1: 8*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 9*9880d681SAndroid Build Coastguard Worker; CHECK: srl %r2, 0(%r3) 10*9880d681SAndroid Build Coastguard Worker %and = and i32 %sh, 31 11*9880d681SAndroid Build Coastguard Worker %shift = lshr i32 %a, %and 12*9880d681SAndroid Build Coastguard Worker ret i32 %shift 13*9880d681SAndroid Build Coastguard Worker} 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Worker; Test arithmetic shift right. 16*9880d681SAndroid Build Coastguard Workerdefine i32 @f2(i32 %a, i32 %sh) { 17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f2: 18*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 19*9880d681SAndroid Build Coastguard Worker; CHECK: sra %r2, 0(%r3) 20*9880d681SAndroid Build Coastguard Worker %and = and i32 %sh, 31 21*9880d681SAndroid Build Coastguard Worker %shift = ashr i32 %a, %and 22*9880d681SAndroid Build Coastguard Worker ret i32 %shift 23*9880d681SAndroid Build Coastguard Worker} 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard Worker; Test shift left. 26*9880d681SAndroid Build Coastguard Workerdefine i32 @f3(i32 %a, i32 %sh) { 27*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f3: 28*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 29*9880d681SAndroid Build Coastguard Worker; CHECK: sll %r2, 0(%r3) 30*9880d681SAndroid Build Coastguard Worker %and = and i32 %sh, 31 31*9880d681SAndroid Build Coastguard Worker %shift = shl i32 %a, %and 32*9880d681SAndroid Build Coastguard Worker ret i32 %shift 33*9880d681SAndroid Build Coastguard Worker} 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Worker; Test 64-bit logical shift right. 36*9880d681SAndroid Build Coastguard Workerdefine i64 @f4(i64 %a, i64 %sh) { 37*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f4: 38*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 39*9880d681SAndroid Build Coastguard Worker; CHECK: srlg %r2, %r2, 0(%r3) 40*9880d681SAndroid Build Coastguard Worker %and = and i64 %sh, 31 41*9880d681SAndroid Build Coastguard Worker %shift = lshr i64 %a, %and 42*9880d681SAndroid Build Coastguard Worker ret i64 %shift 43*9880d681SAndroid Build Coastguard Worker} 44*9880d681SAndroid Build Coastguard Worker 45*9880d681SAndroid Build Coastguard Worker; Test 64-bit arithmetic shift right. 46*9880d681SAndroid Build Coastguard Workerdefine i64 @f5(i64 %a, i64 %sh) { 47*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f5: 48*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 49*9880d681SAndroid Build Coastguard Worker; CHECK: srag %r2, %r2, 0(%r3) 50*9880d681SAndroid Build Coastguard Worker %and = and i64 %sh, 31 51*9880d681SAndroid Build Coastguard Worker %shift = ashr i64 %a, %and 52*9880d681SAndroid Build Coastguard Worker ret i64 %shift 53*9880d681SAndroid Build Coastguard Worker} 54*9880d681SAndroid Build Coastguard Worker 55*9880d681SAndroid Build Coastguard Worker; Test 64-bit shift left. 56*9880d681SAndroid Build Coastguard Workerdefine i64 @f6(i64 %a, i64 %sh) { 57*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f6: 58*9880d681SAndroid Build Coastguard Worker; CHECK: nill %r3, 31 59*9880d681SAndroid Build Coastguard Worker; CHECK: sllg %r2, %r2, 0(%r3) 60*9880d681SAndroid Build Coastguard Worker %and = and i64 %sh, 31 61*9880d681SAndroid Build Coastguard Worker %shift = shl i64 %a, %and 62*9880d681SAndroid Build Coastguard Worker ret i64 %shift 63*9880d681SAndroid Build Coastguard Worker} 64