| John Bauman | 66b8ab2 | 2014-05-06 15:57:45 -0400 | [diff] [blame] | 1 | ; RUN: opt < %s -indvars -S -enable-iv-rewrite | FileCheck %s |
| 2 | ; CHECK: getelementptr |
| 3 | ; CHECK: mul {{.*}}, 37 |
| 4 | ; CHECK: add {{.*}}, 5203 |
| 5 | ; CHECK-NOT: cast |
| 6 | |
| 7 | ; This test tests several things. The load and store should use the |
| 8 | ; same address instead of having it computed twice, and SCEVExpander should |
| 9 | ; be able to reconstruct the full getelementptr, despite it having a few |
| 10 | ; obstacles set in its way. |
| 11 | |
| 12 | target datalayout = "e-p:64:64:64-n32:64" |
| 13 | |
| 14 | define void @foo(i64 %n, i64 %m, i64 %o, i64 %q, double* nocapture %p) nounwind { |
| 15 | entry: |
| 16 | %tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1] |
| 17 | br i1 %tmp, label %bb.nph3, label %return |
| 18 | |
| 19 | bb.nph: ; preds = %bb2.preheader |
| 20 | %tmp1 = mul i64 %tmp16, %i.02 ; <i64> [#uses=1] |
| 21 | %tmp2 = mul i64 %tmp19, %i.02 ; <i64> [#uses=1] |
| 22 | br label %bb1 |
| 23 | |
| 24 | bb1: ; preds = %bb2, %bb.nph |
| 25 | %j.01 = phi i64 [ %tmp9, %bb2 ], [ 0, %bb.nph ] ; <i64> [#uses=3] |
| 26 | %tmp3 = add i64 %j.01, %tmp1 ; <i64> [#uses=1] |
| 27 | %tmp4 = add i64 %j.01, %tmp2 ; <i64> [#uses=1] |
| 28 | %z0 = add i64 %tmp3, 5203 |
| 29 | %tmp5 = getelementptr double* %p, i64 %z0 ; <double*> [#uses=1] |
| 30 | %tmp6 = load double* %tmp5, align 8 ; <double> [#uses=1] |
| 31 | %tmp7 = fdiv double %tmp6, 2.100000e+00 ; <double> [#uses=1] |
| 32 | %z1 = add i64 %tmp4, 5203 |
| 33 | %tmp8 = getelementptr double* %p, i64 %z1 ; <double*> [#uses=1] |
| 34 | store double %tmp7, double* %tmp8, align 8 |
| 35 | %tmp9 = add i64 %j.01, 1 ; <i64> [#uses=2] |
| 36 | br label %bb2 |
| 37 | |
| 38 | bb2: ; preds = %bb1 |
| 39 | %tmp10 = icmp slt i64 %tmp9, %m ; <i1> [#uses=1] |
| 40 | br i1 %tmp10, label %bb1, label %bb2.bb3_crit_edge |
| 41 | |
| 42 | bb2.bb3_crit_edge: ; preds = %bb2 |
| 43 | br label %bb3 |
| 44 | |
| 45 | bb3: ; preds = %bb2.preheader, %bb2.bb3_crit_edge |
| 46 | %tmp11 = add i64 %i.02, 1 ; <i64> [#uses=2] |
| 47 | br label %bb4 |
| 48 | |
| 49 | bb4: ; preds = %bb3 |
| 50 | %tmp12 = icmp slt i64 %tmp11, %n ; <i1> [#uses=1] |
| 51 | br i1 %tmp12, label %bb2.preheader, label %bb4.return_crit_edge |
| 52 | |
| 53 | bb4.return_crit_edge: ; preds = %bb4 |
| 54 | br label %bb4.return_crit_edge.split |
| 55 | |
| 56 | bb4.return_crit_edge.split: ; preds = %bb.nph3, %bb4.return_crit_edge |
| 57 | br label %return |
| 58 | |
| 59 | bb.nph3: ; preds = %entry |
| 60 | %tmp13 = icmp sgt i64 %m, 0 ; <i1> [#uses=1] |
| 61 | %tmp14 = mul i64 %n, 37 ; <i64> [#uses=1] |
| 62 | %tmp15 = mul i64 %tmp14, %o ; <i64> [#uses=1] |
| 63 | %tmp16 = mul i64 %tmp15, %q ; <i64> [#uses=1] |
| 64 | %tmp17 = mul i64 %n, 37 ; <i64> [#uses=1] |
| 65 | %tmp18 = mul i64 %tmp17, %o ; <i64> [#uses=1] |
| 66 | %tmp19 = mul i64 %tmp18, %q ; <i64> [#uses=1] |
| 67 | br i1 %tmp13, label %bb.nph3.split, label %bb4.return_crit_edge.split |
| 68 | |
| 69 | bb.nph3.split: ; preds = %bb.nph3 |
| 70 | br label %bb2.preheader |
| 71 | |
| 72 | bb2.preheader: ; preds = %bb.nph3.split, %bb4 |
| 73 | %i.02 = phi i64 [ %tmp11, %bb4 ], [ 0, %bb.nph3.split ] ; <i64> [#uses=3] |
| 74 | br i1 true, label %bb.nph, label %bb3 |
| 75 | |
| 76 | return: ; preds = %bb4.return_crit_edge.split, %entry |
| 77 | ret void |
| 78 | } |
