1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker@mode_table = global [4 x i32] zeroinitializer ; <[4 x i32]*> [#uses=1] 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; CHECK: max backedge-taken count is 1{{$}} 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workerdefine i8 @f() { 8*9880d681SAndroid Build Coastguard Workerentry: 9*9880d681SAndroid Build Coastguard Worker tail call i32 @fegetround( ) ; <i32>:0 [#uses=1] 10*9880d681SAndroid Build Coastguard Worker br label %bb 11*9880d681SAndroid Build Coastguard Worker 12*9880d681SAndroid Build Coastguard Workerbb: ; preds = %bb4, %entry 13*9880d681SAndroid Build Coastguard Worker %mode.0 = phi i8 [ 0, %entry ], [ %indvar.next, %bb4 ] ; <i8> [#uses=4] 14*9880d681SAndroid Build Coastguard Worker zext i8 %mode.0 to i32 ; <i32>:1 [#uses=1] 15*9880d681SAndroid Build Coastguard Worker getelementptr [4 x i32], [4 x i32]* @mode_table, i32 0, i32 %1 ; <i32*>:2 [#uses=1] 16*9880d681SAndroid Build Coastguard Worker load i32, i32* %2, align 4 ; <i32>:3 [#uses=1] 17*9880d681SAndroid Build Coastguard Worker icmp eq i32 %3, %0 ; <i1>:4 [#uses=1] 18*9880d681SAndroid Build Coastguard Worker br i1 %4, label %bb1, label %bb2 19*9880d681SAndroid Build Coastguard Worker 20*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %bb 21*9880d681SAndroid Build Coastguard Worker ret i8 %mode.0 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerbb2: ; preds = %bb 24*9880d681SAndroid Build Coastguard Worker icmp eq i8 %mode.0, 1 ; <i1>:5 [#uses=1] 25*9880d681SAndroid Build Coastguard Worker br i1 %5, label %bb5, label %bb4 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workerbb4: ; preds = %bb2 28*9880d681SAndroid Build Coastguard Worker %indvar.next = add i8 %mode.0, 1 ; <i8> [#uses=1] 29*9880d681SAndroid Build Coastguard Worker br label %bb 30*9880d681SAndroid Build Coastguard Worker 31*9880d681SAndroid Build Coastguard Workerbb5: ; preds = %bb2 32*9880d681SAndroid Build Coastguard Worker tail call void @raise_exception( ) noreturn 33*9880d681SAndroid Build Coastguard Worker unreachable 34*9880d681SAndroid Build Coastguard Worker} 35*9880d681SAndroid Build Coastguard Worker 36*9880d681SAndroid Build Coastguard Workerdeclare i32 @fegetround() 37*9880d681SAndroid Build Coastguard Worker 38*9880d681SAndroid Build Coastguard Workerdeclare void @raise_exception() noreturn 39