| Dan Gohman | 8a977e2 | 2010-01-26 19:25:59 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -analyze -scalar-evolution | \ |
| Chandler Carruth | 4177e6f | 2012-07-02 12:47:22 +0000 | [diff] [blame] | 2 | ; RUN: grep "backedge-taken count is 4" |
| Zhou Sheng | fc24a72 | 2007-04-26 16:44:48 +0000 | [diff] [blame] | 3 | ; PR1101 |
| 4 | |
| 5 | @A = weak global [1000 x i32] zeroinitializer, align 32 |
| 6 | |
| 7 | |
| 8 | define void @test(i32 %N) { |
| 9 | entry: |
| Zhou Sheng | fc24a72 | 2007-04-26 16:44:48 +0000 | [diff] [blame] | 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 | } |