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Diffstat (limited to 'test/Transforms/LoopInterchange/interchange.ll')
| -rw-r--r-- | test/Transforms/LoopInterchange/interchange.ll | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/test/Transforms/LoopInterchange/interchange.ll b/test/Transforms/LoopInterchange/interchange.ll new file mode 100644 index 0000000..30a4a71 --- /dev/null +++ b/test/Transforms/LoopInterchange/interchange.ll @@ -0,0 +1,557 @@ +; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s +;; We test the complete .ll for adjustment in outer loop header/latch and inner loop header/latch. + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@A = common global [100 x [100 x i32]] zeroinitializer +@B = common global [100 x i32] zeroinitializer +@C = common global [100 x [100 x i32]] zeroinitializer +@D = common global [100 x [100 x [100 x i32]]] zeroinitializer + +declare void @foo(...) + +;;--------------------------------------Test case 01------------------------------------ +;; for(int i=0;i<N;i++) +;; for(int j=1;j<N;j++) +;; A[j][i] = A[j][i]+k; + +define void @interchange_01(i32 %k, i32 %N) { +entry: + %cmp21 = icmp sgt i32 %N, 0 + br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end12 + +for.cond1.preheader.lr.ph: + %cmp219 = icmp sgt i32 %N, 1 + %0 = add i32 %N, -1 + br label %for.cond1.preheader + +for.cond1.preheader: + %indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ] + br i1 %cmp219, label %for.body3, label %for.inc10 + +for.body3: + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ] + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23 + %1 = load i32, i32* %arrayidx5 + %add = add nsw i32 %1, %k + store i32 %add, i32* %arrayidx5 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %0 + br i1 %exitcond, label %for.inc10, label %for.body3 + +for.inc10: + %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 + %lftr.wideiv25 = trunc i64 %indvars.iv23 to i32 + %exitcond26 = icmp eq i32 %lftr.wideiv25, %0 + br i1 %exitcond26, label %for.end12, label %for.cond1.preheader + +for.end12: + ret void +} + +; CHECK-LABEL: @interchange_01 +; CHECK: entry: +; CHECK: %cmp21 = icmp sgt i32 %N, 0 +; CHECK: br i1 %cmp21, label %for.body3.preheader, label %for.end12 +; CHECK: for.cond1.preheader.lr.ph: +; CHECK: br label %for.cond1.preheader +; CHECK: for.cond1.preheader: +; CHECK: %indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ] +; CHECK: br i1 %cmp219, label %for.body3.split1, label %for.end12.loopexit +; CHECK: for.body3.preheader: +; CHECK: %cmp219 = icmp sgt i32 %N, 1 +; CHECK: %0 = add i32 %N, -1 +; CHECK: br label %for.body3 +; CHECK: for.body3: +; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3.split ], [ 1, %for.body3.preheader ] +; CHECK: br label %for.cond1.preheader.lr.ph +; CHECK: for.body3.split1: +; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23 +; CHECK: %1 = load i32, i32* %arrayidx5 +; CHECK: %add = add nsw i32 %1, %k +; CHECK: store i32 %add, i32* %arrayidx5 +; CHECK: br label %for.inc10.loopexit +; CHECK: for.body3.split: +; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 +; CHECK: %lftr.wideiv = trunc i64 %indvars.iv to i32 +; CHECK: %exitcond = icmp eq i32 %lftr.wideiv, %0 +; CHECK: br i1 %exitcond, label %for.end12.loopexit, label %for.body3 +; CHECK: for.inc10.loopexit: +; CHECK: br label %for.inc10 +; CHECK: for.inc10: +; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 +; CHECK: %lftr.wideiv25 = trunc i64 %indvars.iv23 to i32 +; CHECK: %exitcond26 = icmp eq i32 %lftr.wideiv25, %0 +; CHECK: br i1 %exitcond26, label %for.body3.split, label %for.cond1.preheader +; CHECK: for.end12.loopexit: +; CHECK: br label %for.end12 +; CHECK: for.end12: +; CHECK: ret void + +;;--------------------------------------Test case 02------------------------------------- + +;; for(int i=0;i<100;i++) +;; for(int j=100;j>=0;j--) +;; A[j][i] = A[j][i]+k; + +define void @interchange_02(i32 %k) { +entry: + br label %for.cond1.preheader + +for.cond1.preheader: + %indvars.iv19 = phi i64 [ 0, %entry ], [ %indvars.iv.next20, %for.inc10 ] + br label %for.body3 + +for.body3: + %indvars.iv = phi i64 [ 100, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv19 + %0 = load i32, i32* %arrayidx5 + %add = add nsw i32 %0, %k + store i32 %add, i32* %arrayidx5 + %indvars.iv.next = add nsw i64 %indvars.iv, -1 + %cmp2 = icmp sgt i64 %indvars.iv, 0 + br i1 %cmp2, label %for.body3, label %for.inc10 + +for.inc10: + %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1 + %exitcond = icmp eq i64 %indvars.iv.next20, 100 + br i1 %exitcond, label %for.end11, label %for.cond1.preheader + +for.end11: + ret void +} + +; CHECK-LABEL: @interchange_02 +; CHECK: entry: +; CHECK: br label %for.body3.preheader +; CHECK: for.cond1.preheader.preheader: +; CHECK: br label %for.cond1.preheader +; CHECK: for.cond1.preheader: +; CHECK: %indvars.iv19 = phi i64 [ %indvars.iv.next20, %for.inc10 ], [ 0, %for.cond1.preheader.preheader ] +; CHECK: br label %for.body3.split1 +; CHECK: for.body3.preheader: +; CHECK: br label %for.body3 +; CHECK: for.body3: +; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3.split ], [ 100, %for.body3.preheader ] +; CHECK: br label %for.cond1.preheader.preheader +; CHECK: for.body3.split1: ; preds = %for.cond1.preheader +; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv19 +; CHECK: %0 = load i32, i32* %arrayidx5 +; CHECK: %add = add nsw i32 %0, %k +; CHECK: store i32 %add, i32* %arrayidx5 +; CHECK: br label %for.inc10 +; CHECK: for.body3.split: +; CHECK: %indvars.iv.next = add nsw i64 %indvars.iv, -1 +; CHECK: %cmp2 = icmp sgt i64 %indvars.iv, 0 +; CHECK: br i1 %cmp2, label %for.body3, label %for.end11 +; CHECK: for.inc10: +; CHECK: %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1 +; CHECK: %exitcond = icmp eq i64 %indvars.iv.next20, 100 +; CHECK: br i1 %exitcond, label %for.body3.split, label %for.cond1.preheader +; CHECK: for.end11: +; CHECK: ret void + +;;--------------------------------------Test case 03------------------------------------- +;; Loops should not be interchanged in this case as it is not profitable. +;; for(int i=0;i<100;i++) +;; for(int j=0;j<100;j++) +;; A[i][j] = A[i][j]+k; + +define void @interchange_03(i32 %k) { +entry: + br label %for.cond1.preheader + +for.cond1.preheader: + %indvars.iv21 = phi i64 [ 0, %entry ], [ %indvars.iv.next22, %for.inc10 ] + br label %for.body3 + +for.body3: + %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv21, i64 %indvars.iv + %0 = load i32, i32* %arrayidx5 + %add = add nsw i32 %0, %k + store i32 %add, i32* %arrayidx5 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %exitcond = icmp eq i64 %indvars.iv.next, 100 + br i1 %exitcond, label %for.inc10, label %for.body3 + +for.inc10: + %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1 + %exitcond23 = icmp eq i64 %indvars.iv.next22, 100 + br i1 %exitcond23, label %for.end12, label %for.cond1.preheader + +for.end12: + ret void +} + +; CHECK-LABEL: @interchange_03 +; CHECK: entry: +; CHECK: br label %for.cond1.preheader.preheader +; CHECK: for.cond1.preheader.preheader: ; preds = %entry +; CHECK: br label %for.cond1.preheader +; CHECK: for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc10 +; CHECK: %indvars.iv21 = phi i64 [ %indvars.iv.next22, %for.inc10 ], [ 0, %for.cond1.preheader.preheader ] +; CHECK: br label %for.body3.preheader +; CHECK: for.body3.preheader: ; preds = %for.cond1.preheader +; CHECK: br label %for.body3 +; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3 +; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 0, %for.body3.preheader ] +; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv21, i64 %indvars.iv +; CHECK: %0 = load i32, i32* %arrayidx5 +; CHECK: %add = add nsw i32 %0, %k +; CHECK: store i32 %add, i32* %arrayidx5 +; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 +; CHECK: %exitcond = icmp eq i64 %indvars.iv.next, 100 +; CHECK: br i1 %exitcond, label %for.inc10, label %for.body3 +; CHECK: for.inc10: ; preds = %for.body3 +; CHECK: %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1 +; CHECK: %exitcond23 = icmp eq i64 %indvars.iv.next22, 100 +; CHECK: br i1 %exitcond23, label %for.end12, label %for.cond1.preheader +; CHECK: for.end12: ; preds = %for.inc10 +; CHECK: ret void + + +;;--------------------------------------Test case 04------------------------------------- +;; Loops should not be interchanged in this case as it is not legal due to dependency. +;; for(int j=0;j<99;j++) +;; for(int i=0;i<99;i++) +;; A[j][i+1] = A[j+1][i]+k; + +define void @interchange_04(i32 %k){ +entry: + br label %for.cond1.preheader + +for.cond1.preheader: + %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ] + %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 + br label %for.body3 + +for.body3: + %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next24, i64 %indvars.iv + %0 = load i32, i32* %arrayidx5 + %add6 = add nsw i32 %0, %k + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next + store i32 %add6, i32* %arrayidx11 + %exitcond = icmp eq i64 %indvars.iv.next, 99 + br i1 %exitcond, label %for.inc12, label %for.body3 + +for.inc12: + %exitcond25 = icmp eq i64 %indvars.iv.next24, 99 + br i1 %exitcond25, label %for.end14, label %for.cond1.preheader + +for.end14: + ret void +} + +; CHECK-LABEL: @interchange_04 +; CHECK: entry: +; CHECK: br label %for.cond1.preheader +; CHECK: for.cond1.preheader: ; preds = %for.inc12, %entry +; CHECK: %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ] +; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 +; CHECK: br label %for.body3 +; CHECK: for.body3: ; preds = %for.body3, %for.cond1.preheader +; CHECK: %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] +; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next24, i64 %indvars.iv +; CHECK: %0 = load i32, i32* %arrayidx5 +; CHECK: %add6 = add nsw i32 %0, %k +; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 +; CHECK: %arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next +; CHECK: store i32 %add6, i32* %arrayidx11 +; CHECK: %exitcond = icmp eq i64 %indvars.iv.next, 99 +; CHECK: br i1 %exitcond, label %for.inc12, label %for.body3 +; CHECK: for.inc12: ; preds = %for.body3 +; CHECK: %exitcond25 = icmp eq i64 %indvars.iv.next24, 99 +; CHECK: br i1 %exitcond25, label %for.end14, label %for.cond1.preheader +; CHECK: for.end14: ; preds = %for.inc12 +; CHECK: ret void + + + +;;--------------------------------------Test case 05------------------------------------- +;; Loops not tightly nested are not interchanged +;; for(int j=0;j<N;j++) { +;; B[j] = j+k; +;; for(int i=0;i<N;i++) +;; A[j][i] = A[j][i]+B[j]; +;; } + +define void @interchange_05(i32 %k, i32 %N){ +entry: + %cmp30 = icmp sgt i32 %N, 0 + br i1 %cmp30, label %for.body.lr.ph, label %for.end17 + +for.body.lr.ph: + %0 = add i32 %N, -1 + %1 = zext i32 %k to i64 + br label %for.body + +for.body: + %indvars.iv32 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next33, %for.inc15 ] + %2 = add nsw i64 %indvars.iv32, %1 + %arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @B, i64 0, i64 %indvars.iv32 + %3 = trunc i64 %2 to i32 + store i32 %3, i32* %arrayidx + br label %for.body3 + +for.body3: + %indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body3 ] + %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv32, i64 %indvars.iv + %4 = load i32, i32* %arrayidx7 + %add10 = add nsw i32 %3, %4 + store i32 %add10, i32* %arrayidx7 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %0 + br i1 %exitcond, label %for.inc15, label %for.body3 + +for.inc15: + %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1 + %lftr.wideiv35 = trunc i64 %indvars.iv32 to i32 + %exitcond36 = icmp eq i32 %lftr.wideiv35, %0 + br i1 %exitcond36, label %for.end17, label %for.body + +for.end17: + ret void +} + +; CHECK-LABEL: @interchange_05 +; CHECK: entry: +; CHECK: %cmp30 = icmp sgt i32 %N, 0 +; CHECK: br i1 %cmp30, label %for.body.lr.ph, label %for.end17 +; CHECK: for.body.lr.ph: +; CHECK: %0 = add i32 %N, -1 +; CHECK: %1 = zext i32 %k to i64 +; CHECK: br label %for.body +; CHECK: for.body: +; CHECK: %indvars.iv32 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next33, %for.inc15 ] +; CHECK: %2 = add nsw i64 %indvars.iv32, %1 +; CHECK: %arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @B, i64 0, i64 %indvars.iv32 +; CHECK: %3 = trunc i64 %2 to i32 +; CHECK: store i32 %3, i32* %arrayidx +; CHECK: br label %for.body3.preheader +; CHECK: for.body3.preheader: +; CHECK: br label %for.body3 +; CHECK: for.body3: +; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 0, %for.body3.preheader ] +; CHECK: %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv32, i64 %indvars.iv +; CHECK: %4 = load i32, i32* %arrayidx7 +; CHECK: %add10 = add nsw i32 %3, %4 +; CHECK: store i32 %add10, i32* %arrayidx7 +; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 +; CHECK: %lftr.wideiv = trunc i64 %indvars.iv to i32 +; CHECK: %exitcond = icmp eq i32 %lftr.wideiv, %0 +; CHECK: br i1 %exitcond, label %for.inc15, label %for.body3 +; CHECK: for.inc15: +; CHECK: %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1 +; CHECK: %lftr.wideiv35 = trunc i64 %indvars.iv32 to i32 +; CHECK: %exitcond36 = icmp eq i32 %lftr.wideiv35, %0 +; CHECK: br i1 %exitcond36, label %for.end17.loopexit, label %for.body +; CHECK: for.end17.loopexit: +; CHECK: br label %for.end17 +; CHECK: for.end17: +; CHECK: ret void + + +;;--------------------------------------Test case 06------------------------------------- +;; Loops not tightly nested are not interchanged +;; for(int j=0;j<N;j++) { +;; foo(); +;; for(int i=2;i<N;i++) +;; A[j][i] = A[j][i]+k; +;; } + +define void @interchange_06(i32 %k, i32 %N) { +entry: + %cmp22 = icmp sgt i32 %N, 0 + br i1 %cmp22, label %for.body.lr.ph, label %for.end12 + +for.body.lr.ph: + %0 = add i32 %N, -1 + br label %for.body + +for.body: + %indvars.iv24 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next25, %for.inc10 ] + tail call void (...)* @foo() + br label %for.body3 + +for.body3: + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 2, %for.body ] + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv24, i64 %indvars.iv + %1 = load i32, i32* %arrayidx5 + %add = add nsw i32 %1, %k + store i32 %add, i32* %arrayidx5 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %0 + br i1 %exitcond, label %for.inc10, label %for.body3 + +for.inc10: + %indvars.iv.next25 = add nuw nsw i64 %indvars.iv24, 1 + %lftr.wideiv26 = trunc i64 %indvars.iv24 to i32 + %exitcond27 = icmp eq i32 %lftr.wideiv26, %0 + br i1 %exitcond27, label %for.end12, label %for.body + +for.end12: + ret void +} +;; Here we are checking if the inner phi is not split then we have not interchanged. +; CHECK-LABEL: @interchange_06 +; CHECK: phi i64 [ %indvars.iv.next, %for.body3 ], [ 2, %for.body3.preheader ] +; CHECK-NEXT: getelementptr +; CHECK-NEXT: %1 = load + +;;--------------------------------------Test case 07------------------------------------- +;; FIXME: +;; Test for interchange when we have an lcssa phi. This should ideally be interchanged but it is currently not supported. +;; for(gi=1;gi<N;gi++) +;; for(gj=1;gj<M;gj++) +;; A[gj][gi] = A[gj - 1][gi] + C[gj][gi]; + +@gi = common global i32 0 +@gj = common global i32 0 + +define void @interchange_07(i32 %N, i32 %M){ +entry: + store i32 1, i32* @gi + %cmp21 = icmp sgt i32 %N, 1 + br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end16 + +for.cond1.preheader.lr.ph: + %cmp218 = icmp sgt i32 %M, 1 + %gi.promoted = load i32, i32* @gi + %0 = add i32 %M, -1 + %1 = sext i32 %gi.promoted to i64 + %2 = sext i32 %N to i64 + %3 = add i32 %gi.promoted, 1 + %4 = icmp slt i32 %3, %N + %smax = select i1 %4, i32 %N, i32 %3 + br label %for.cond1.preheader + +for.cond1.preheader: + %indvars.iv25 = phi i64 [ %1, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next26, %for.inc14 ] + br i1 %cmp218, label %for.body3, label %for.inc14 + +for.body3: + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ] + %5 = add nsw i64 %indvars.iv, -1 + %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25 + %6 = load i32, i32* %arrayidx5 + %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25 + %7 = load i32, i32* %arrayidx9 + %add = add nsw i32 %7, %6 + %arrayidx13 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv25 + store i32 %add, i32* %arrayidx13 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %0 + br i1 %exitcond, label %for.inc14, label %for.body3 + +for.inc14: + %inc.lcssa23 = phi i32 [ 1, %for.cond1.preheader ], [ %M, %for.body3 ] + %indvars.iv.next26 = add nsw i64 %indvars.iv25, 1 + %cmp = icmp slt i64 %indvars.iv.next26, %2 + br i1 %cmp, label %for.cond1.preheader, label %for.cond.for.end16_crit_edge + +for.cond.for.end16_crit_edge: + store i32 %inc.lcssa23, i32* @gj + store i32 %smax, i32* @gi + br label %for.end16 + +for.end16: + ret void +} + +; CHECK-LABEL: @interchange_07 +; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3 +; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.body3.preheader ] +; CHECK: %5 = add nsw i64 %indvars.iv, -1 +; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25 +; CHECK: %6 = load i32, i32* %arrayidx5 +; CHECK: %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25 + +;;------------------------------------------------Test case 08------------------------------- +;; Test for interchange in loop nest greater than 2. +;; for(int i=0;i<100;i++) +;; for(int j=0;j<100;j++) +;; for(int k=0;k<100;k++) +;; D[i][k][j] = D[i][k][j]+t; + +define void @interchange_08(i32 %t){ +entry: + br label %for.cond1.preheader + +for.cond1.preheader: ; preds = %for.inc15, %entry + %i.028 = phi i32 [ 0, %entry ], [ %inc16, %for.inc15 ] + br label %for.cond4.preheader + +for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader + %j.027 = phi i32 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ] + br label %for.body6 + +for.body6: ; preds = %for.body6, %for.cond4.preheader + %k.026 = phi i32 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] + %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027 + %0 = load i32, i32* %arrayidx8 + %add = add nsw i32 %0, %t + store i32 %add, i32* %arrayidx8 + %inc = add nuw nsw i32 %k.026, 1 + %exitcond = icmp eq i32 %inc, 100 + br i1 %exitcond, label %for.inc12, label %for.body6 + +for.inc12: ; preds = %for.body6 + %inc13 = add nuw nsw i32 %j.027, 1 + %exitcond29 = icmp eq i32 %inc13, 100 + br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader + +for.inc15: ; preds = %for.inc12 + %inc16 = add nuw nsw i32 %i.028, 1 + %exitcond30 = icmp eq i32 %inc16, 100 + br i1 %exitcond30, label %for.end17, label %for.cond1.preheader + +for.end17: ; preds = %for.inc15 + ret void +} +; CHECK-LABEL: @interchange_08 +; CHECK: entry: +; CHECK: br label %for.cond1.preheader.preheader +; CHECK: for.cond1.preheader.preheader: ; preds = %entry +; CHECK: br label %for.cond1.preheader +; CHECK: for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc15 +; CHECK: %i.028 = phi i32 [ %inc16, %for.inc15 ], [ 0, %for.cond1.preheader.preheader ] +; CHECK: br label %for.body6.preheader +; CHECK: for.cond4.preheader.preheader: ; preds = %for.body6 +; CHECK: br label %for.cond4.preheader +; CHECK: for.cond4.preheader: ; preds = %for.cond4.preheader.preheader, %for.inc12 +; CHECK: %j.027 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.cond4.preheader.preheader ] +; CHECK: br label %for.body6.split1 +; CHECK: for.body6.preheader: ; preds = %for.cond1.preheader +; CHECK: br label %for.body6 +; CHECK: for.body6: ; preds = %for.body6.preheader, %for.body6.split +; CHECK: %k.026 = phi i32 [ %inc, %for.body6.split ], [ 0, %for.body6.preheader ] +; CHECK: br label %for.cond4.preheader.preheader +; CHECK: for.body6.split1: ; preds = %for.cond4.preheader +; CHECK: %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027 +; CHECK: %0 = load i32, i32* %arrayidx8 +; CHECK: %add = add nsw i32 %0, %t +; CHECK: store i32 %add, i32* %arrayidx8 +; CHECK: br label %for.inc12 +; CHECK: for.body6.split: ; preds = %for.inc12 +; CHECK: %inc = add nuw nsw i32 %k.026, 1 +; CHECK: %exitcond = icmp eq i32 %inc, 100 +; CHECK: br i1 %exitcond, label %for.inc15, label %for.body6 +; CHECK: for.inc12: ; preds = %for.body6.split1 +; CHECK: %inc13 = add nuw nsw i32 %j.027, 1 +; CHECK: %exitcond29 = icmp eq i32 %inc13, 100 +; CHECK: br i1 %exitcond29, label %for.body6.split, label %for.cond4.preheader +; CHECK: for.inc15: ; preds = %for.body6.split +; CHECK: %inc16 = add nuw nsw i32 %i.028, 1 +; CHECK: %exitcond30 = icmp eq i32 %inc16, 100 +; CHECK: br i1 %exitcond30, label %for.end17, label %for.cond1.preheader +; CHECK: for.end17: ; preds = %for.inc15 +; CHECK: ret void + |