| Dan Gohman | 4298d2e | 2010-01-26 19:25:59 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -analyze -scalar-evolution | not grep {/u -1} |
| Nick Lewycky | 3dab9ed | 2009-01-02 18:54:17 +0000 | [diff] [blame] | 2 | ; PR3275 |
| 3 | |
| 4 | @g_16 = external global i16 ; <i16*> [#uses=3] |
| 5 | @.str = external constant [4 x i8] ; <[4 x i8]*> [#uses=0] |
| 6 | |
| 7 | define void @func_15() nounwind { |
| 8 | entry: |
| 9 | %0 = load i16* @g_16, align 2 ; <i16> [#uses=1] |
| 10 | %1 = icmp sgt i16 %0, 0 ; <i1> [#uses=1] |
| 11 | br i1 %1, label %bb2, label %bb.nph |
| 12 | |
| 13 | bb.nph: ; preds = %entry |
| 14 | %g_16.promoted = load i16* @g_16 ; <i16> [#uses=1] |
| 15 | br label %bb |
| 16 | |
| 17 | bb: ; preds = %bb1, %bb.nph |
| 18 | %g_16.tmp.0 = phi i16 [ %g_16.promoted, %bb.nph ], [ %2, %bb1 ] ; <i16> [#uses=1] |
| 19 | %2 = add i16 %g_16.tmp.0, -1 ; <i16> [#uses=3] |
| 20 | br label %bb1 |
| 21 | |
| 22 | bb1: ; preds = %bb |
| 23 | %3 = icmp sgt i16 %2, 0 ; <i1> [#uses=1] |
| 24 | br i1 %3, label %bb1.bb2_crit_edge, label %bb |
| 25 | |
| 26 | bb1.bb2_crit_edge: ; preds = %bb1 |
| 27 | store i16 %2, i16* @g_16 |
| 28 | br label %bb2 |
| 29 | |
| 30 | bb2: ; preds = %bb1.bb2_crit_edge, %entry |
| 31 | br label %return |
| 32 | |
| 33 | return: ; preds = %bb2 |
| 34 | ret void |
| 35 | } |
| 36 | |
| 37 | declare i32 @main() nounwind |
| 38 | |
| 39 | declare i32 @printf(i8*, ...) nounwind |
| 40 | |