1*9880d681SAndroid Build Coastguard Worker; RUN: opt -scalar-evolution -analyze < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine void @test1(i8 %t, i32 %len) { 4*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: test1 5*9880d681SAndroid Build Coastguard Worker; CHECK: %sphi = phi i32 [ %ext, %entry ], [ %idx.inc.ext, %loop ] 6*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: --> (zext i8 {%t,+,1}<%loop> to i32) 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Worker entry: 9*9880d681SAndroid Build Coastguard Worker %st = zext i8 %t to i16 10*9880d681SAndroid Build Coastguard Worker %ext = zext i8 %t to i32 11*9880d681SAndroid Build Coastguard Worker %ecmp = icmp ult i16 %st, 42 12*9880d681SAndroid Build Coastguard Worker br i1 %ecmp, label %loop, label %exit 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Worker loop: 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Worker %idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ] 17*9880d681SAndroid Build Coastguard Worker %sphi = phi i32 [ %ext, %entry ], [%idx.inc.ext, %loop] 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Worker %idx.inc = add i8 %idx, 1 20*9880d681SAndroid Build Coastguard Worker %idx.inc.ext = zext i8 %idx.inc to i32 21*9880d681SAndroid Build Coastguard Worker %idx.ext = zext i8 %idx to i32 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Worker %c = icmp ult i32 %idx.inc.ext, %len 24*9880d681SAndroid Build Coastguard Worker br i1 %c, label %loop, label %exit 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Worker exit: 27*9880d681SAndroid Build Coastguard Worker ret void 28*9880d681SAndroid Build Coastguard Worker} 29*9880d681SAndroid Build Coastguard Worker 30*9880d681SAndroid Build Coastguard Workerdefine void @test2(i8 %t, i32 %len) { 31*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: test2 32*9880d681SAndroid Build Coastguard Worker; CHECK: %sphi = phi i32 [ %ext.mul, %entry ], [ %mul, %loop ] 33*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: --> (4 * (zext i8 {%t,+,1}<%loop> to i32)) 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Worker entry: 36*9880d681SAndroid Build Coastguard Worker %st = zext i8 %t to i16 37*9880d681SAndroid Build Coastguard Worker %ext = zext i8 %t to i32 38*9880d681SAndroid Build Coastguard Worker %ext.mul = mul i32 %ext, 4 39*9880d681SAndroid Build Coastguard Worker 40*9880d681SAndroid Build Coastguard Worker %ecmp = icmp ult i16 %st, 42 41*9880d681SAndroid Build Coastguard Worker br i1 %ecmp, label %loop, label %exit 42*9880d681SAndroid Build Coastguard Worker 43*9880d681SAndroid Build Coastguard Worker loop: 44*9880d681SAndroid Build Coastguard Worker 45*9880d681SAndroid Build Coastguard Worker %idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ] 46*9880d681SAndroid Build Coastguard Worker %sphi = phi i32 [ %ext.mul, %entry ], [%mul, %loop] 47*9880d681SAndroid Build Coastguard Worker 48*9880d681SAndroid Build Coastguard Worker %idx.inc = add i8 %idx, 1 49*9880d681SAndroid Build Coastguard Worker %idx.inc.ext = zext i8 %idx.inc to i32 50*9880d681SAndroid Build Coastguard Worker %mul = mul i32 %idx.inc.ext, 4 51*9880d681SAndroid Build Coastguard Worker 52*9880d681SAndroid Build Coastguard Worker %idx.ext = zext i8 %idx to i32 53*9880d681SAndroid Build Coastguard Worker 54*9880d681SAndroid Build Coastguard Worker %c = icmp ult i32 %idx.inc.ext, %len 55*9880d681SAndroid Build Coastguard Worker br i1 %c, label %loop, label %exit 56*9880d681SAndroid Build Coastguard Worker 57*9880d681SAndroid Build Coastguard Worker exit: 58*9880d681SAndroid Build Coastguard Worker ret void 59*9880d681SAndroid Build Coastguard Worker} 60