1; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s 2; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s 3 4; CHECK: Loop %bb1: backedge-taken count is ((2 * %a.promoted) /u 2) 5 6target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 7target triple = "x86_64-apple-macosx10.10.0" 8 9@a = global i8 -127, align 1 10@b = common global i32 0, align 4 11 12declare void @use(i32) 13 14define i32 @main() { 15bb: 16 %a.promoted = load i8, i8* @a 17 br label %bb1 18 19bb1: ; preds = %bb1, %bb 20 %tmp = phi i8 [ %tmp2, %bb1 ], [ %a.promoted, %bb ] 21 %tmp2 = add i8 %tmp, -1 22 %tmp3 = sext i8 %tmp to i32 23 %tmp4 = xor i32 %tmp3, -1 24 %tmp5 = sext i8 %tmp2 to i32 25 %tmpf = sub nsw i32 %tmp4, %tmp5 26 %tmp6 = trunc i32 %tmpf to i8 27 %tmp7 = icmp eq i8 %tmp6, 0 28 br i1 %tmp7, label %bb8, label %bb1 29 30bb8: ; preds = %bb1 31 store i8 %tmp2, i8* @a 32 store i32 %tmp4, i32* @b 33 %tmp9 = sext i8 %tmp2 to i32 34 call void @use(i32 %tmp9) 35 ret i32 0 36} 37