| ; Loop is elimianted. Save last value assignment. |
| ; RUN: llvm-as < %s | opt -loop-index-split -disable-output -stats |& \ |
| ; RUN: grep "loop-index-split" | count 1 |
| |
| %struct.anon = type { i32 } |
| @S1 = external global i32 ; <i32*> [#uses=1] |
| @W1 = external global i32 ; <i32*> [#uses=1] |
| @Y = weak global [100 x %struct.anon] zeroinitializer, align 32 ; <[100 x %struct.anon]*> [#uses=1] |
| @ti = external global i32 ; <i32*> [#uses=1] |
| @T2 = external global [100 x [100 x i32]] ; <[100 x [100 x i32]]*> [#uses=1] |
| @d = external global i32 ; <i32*> [#uses=1] |
| @T1 = external global i32 ; <i32*> [#uses=2] |
| @N1 = external global i32 ; <i32*> [#uses=2] |
| |
| define void @foo() { |
| entry: |
| %tmp = load i32* @S1, align 4 ; <i32> [#uses=4] |
| %tmp266 = load i32* @N1, align 4 ; <i32> [#uses=1] |
| %tmp288 = icmp ult i32 %tmp, %tmp266 ; <i1> [#uses=1] |
| br i1 %tmp288, label %bb.preheader, label %return |
| |
| bb.preheader: ; preds = %entry |
| %tmp1 = load i32* @W1, align 4 ; <i32> [#uses=1] |
| %tmp13 = load i32* @ti, align 4 ; <i32> [#uses=1] |
| %tmp18 = load i32* @d, align 4 ; <i32> [#uses=1] |
| %tmp26 = load i32* @N1, align 4 ; <i32> [#uses=2] |
| %T1.promoted = load i32* @T1 ; <i32> [#uses=1] |
| %tmp2 = add i32 %tmp, 1 ; <i32> [#uses=2] |
| %tmp4 = icmp ugt i32 %tmp2, %tmp26 ; <i1> [#uses=1] |
| %umax = select i1 %tmp4, i32 %tmp2, i32 %tmp26 ; <i32> [#uses=1] |
| %tmp5 = sub i32 0, %tmp ; <i32> [#uses=1] |
| %tmp6 = add i32 %umax, %tmp5 ; <i32> [#uses=1] |
| br label %bb |
| |
| bb: ; preds = %bb25, %bb.preheader |
| %indvar = phi i32 [ 0, %bb.preheader ], [ %indvar.next, %bb25 ] ; <i32> [#uses=2] |
| %T1.tmp.1 = phi i32 [ %T1.promoted, %bb.preheader ], [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=3] |
| %tj.01.0 = add i32 %indvar, %tmp ; <i32> [#uses=3] |
| %tmp24 = add i32 %tj.01.0, 1 ; <i32> [#uses=1] |
| %tmp3 = icmp eq i32 %tmp24, %tmp1 ; <i1> [#uses=1] |
| br i1 %tmp3, label %cond_true, label %bb25 |
| |
| cond_true: ; preds = %bb |
| %tmp7 = getelementptr [100 x %struct.anon]* @Y, i32 0, i32 %tj.01.0, i32 0 ; <i32*> [#uses=1] |
| %tmp8 = load i32* %tmp7, align 4 ; <i32> [#uses=1] |
| %tmp9 = icmp sgt i32 %tmp8, 0 ; <i1> [#uses=1] |
| br i1 %tmp9, label %cond_true12, label %bb25 |
| |
| cond_true12: ; preds = %cond_true |
| %tmp16 = getelementptr [100 x [100 x i32]]* @T2, i32 0, i32 %tmp13, i32 %tj.01.0 ; <i32*> [#uses=1] |
| %tmp17 = load i32* %tmp16, align 4 ; <i32> [#uses=1] |
| %tmp19 = mul i32 %tmp18, %tmp17 ; <i32> [#uses=1] |
| %tmp21 = add i32 %tmp19, %T1.tmp.1 ; <i32> [#uses=1] |
| br label %bb25 |
| |
| bb25: ; preds = %cond_true12, %cond_true, %bb |
| %T1.tmp.0 = phi i32 [ %T1.tmp.1, %bb ], [ %T1.tmp.1, %cond_true ], [ %tmp21, %cond_true12 ] ; <i32> [#uses=2] |
| %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] |
| %exitcond = icmp ne i32 %indvar.next, %tmp6 ; <i1> [#uses=1] |
| br i1 %exitcond, label %bb, label %return.loopexit |
| |
| return.loopexit: ; preds = %bb25 |
| %T1.tmp.0.lcssa = phi i32 [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=1] |
| store i32 %T1.tmp.0.lcssa, i32* @T1 |
| br label %return |
| |
| return: ; preds = %return.loopexit, %entry |
| ret void |
| } |