1*9880d681SAndroid Build Coastguard Worker; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; CHECK: Loop %bb1: backedge-taken count is (zext i7 (trunc i8 %a.promoted to i7) to i8) 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 6*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-apple-macosx10.10.0" 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Worker@a = global i8 -127, align 1 9*9880d681SAndroid Build Coastguard Worker@b = common global i32 0, align 4 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdeclare void @use(i32) 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workerdefine i32 @main() { 14*9880d681SAndroid Build Coastguard Workerbb: 15*9880d681SAndroid Build Coastguard Worker %a.promoted = load i8, i8* @a 16*9880d681SAndroid Build Coastguard Worker br label %bb1 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %bb1, %bb 19*9880d681SAndroid Build Coastguard Worker %tmp = phi i8 [ %tmp2, %bb1 ], [ %a.promoted, %bb ] 20*9880d681SAndroid Build Coastguard Worker %tmp2 = add i8 %tmp, -1 21*9880d681SAndroid Build Coastguard Worker %tmp3 = sext i8 %tmp to i32 22*9880d681SAndroid Build Coastguard Worker %tmp4 = xor i32 %tmp3, -1 23*9880d681SAndroid Build Coastguard Worker %tmp5 = sext i8 %tmp2 to i32 24*9880d681SAndroid Build Coastguard Worker %tmpf = sub nsw i32 %tmp4, %tmp5 25*9880d681SAndroid Build Coastguard Worker %tmp6 = trunc i32 %tmpf to i8 26*9880d681SAndroid Build Coastguard Worker %tmp7 = icmp eq i8 %tmp6, 0 27*9880d681SAndroid Build Coastguard Worker br i1 %tmp7, label %bb8, label %bb1 28*9880d681SAndroid Build Coastguard Worker 29*9880d681SAndroid Build Coastguard Workerbb8: ; preds = %bb1 30*9880d681SAndroid Build Coastguard Worker store i8 %tmp2, i8* @a 31*9880d681SAndroid Build Coastguard Worker store i32 %tmp4, i32* @b 32*9880d681SAndroid Build Coastguard Worker %tmp9 = sext i8 %tmp2 to i32 33*9880d681SAndroid Build Coastguard Worker call void @use(i32 %tmp9) 34*9880d681SAndroid Build Coastguard Worker ret i32 0 35*9880d681SAndroid Build Coastguard Worker} 36