| Dan Gohman | 8a977e2 | 2010-01-26 19:25:59 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -analyze -scalar-evolution \ |
| Dan Gohman | 46bdfb0 | 2009-02-24 18:55:53 +0000 | [diff] [blame] | 2 | ; RUN: -scalar-evolution-max-iterations=0 | grep {backedge-taken count is 100} |
| 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: |
| Chris Lattner | 7a1b9bd | 2011-06-17 06:36:20 +0000 | [diff] [blame] | 10 | %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| Zhou Sheng | fc24a72 | 2007-04-26 16:44:48 +0000 | [diff] [blame] | 11 | br label %bb3 |
| 12 | |
| 13 | bb: ; preds = %bb3 |
| 14 | %tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1] |
| 15 | store i32 123, i32* %tmp |
| 16 | %tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1] |
| 17 | br label %bb3 |
| 18 | |
| 19 | bb3: ; preds = %bb, %entry |
| 20 | %i.0 = phi i32 [ 2, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3] |
| 21 | %SQ = mul i32 %i.0, %i.0 |
| 22 | %tmp4 = mul i32 %i.0, 2 |
| 23 | %tmp5 = sub i32 %SQ, %tmp4 |
| 24 | %tmp3 = icmp sle i32 %tmp5, 9999 ; <i1> [#uses=1] |
| 25 | br i1 %tmp3, label %bb, label %bb5 |
| 26 | |
| 27 | bb5: ; preds = %bb3 |
| 28 | br label %return |
| 29 | |
| 30 | return: ; preds = %bb5 |
| 31 | ret void |
| 32 | } |