1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2 ; PR1101 3 4 @A = weak global [1000 x i32] zeroinitializer, align 32 5 6 ; CHECK: backedge-taken count is 4 7 8 define void @test(i32 %N) { 9 entry: 10 br label %bb3 11 12 bb: ; preds = %bb3 13 %tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1] 14 store i32 123, i32* %tmp 15 %tmp4 = mul i32 %i.0, 4 ; <i32> [#uses=1] 16 %tmp5 = or i32 %tmp4, 1 17 %tmp61 = xor i32 %tmp5, -2147483648 18 %tmp6 = trunc i32 %tmp61 to i16 19 %tmp71 = shl i16 %tmp6, 2 20 %tmp7 = zext i16 %tmp71 to i32 21 %tmp2 = add i32 %tmp7, %i.0 22 br label %bb3 23 24 bb3: ; preds = %bb, %entry 25 %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3] 26 %tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1] 27 br i1 %tmp3, label %bb, label %bb5 28 29 bb5: ; preds = %bb3 30 br label %return 31 32 return: ; preds = %bb5 33 ret void 34 } 35
