146 lines
6.6 KiB
LLVM
146 lines
6.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=loop-fusion < %s | FileCheck %s
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;
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; int A[1024][1024];
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; int B[1024][1024];
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;
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; #define EXPENSIVE_PURE_COMPUTATION(i) ((i - 3) * (i + 3) % i)
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;
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; void dep_free() {
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;
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; for (int i = 0; i < 100; i++)
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; for (int j = 0; j < 100; j++)
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; A[i][j] = EXPENSIVE_PURE_COMPUTATION(i);
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;
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; for (int i = 0; i < 100; i++)
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; for (int j = 0; j < 100; j++)
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; B[i][j] = EXPENSIVE_PURE_COMPUTATION(i);
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; }
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;
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@A = common global [1024 x [1024 x i32]] zeroinitializer, align 16
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@B = common global [1024 x [1024 x i32]] zeroinitializer, align 16
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; TODO: The current version of loop fusion does not allow the inner loops to be
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; fused because they are not control flow equivalent and adjacent. These are
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; limitations that can be addressed in future improvements to fusion.
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define void @dep_free() {
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; CHECK-LABEL: define void @dep_free() {
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; CHECK-NEXT: [[BB:.*]]:
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; CHECK-NEXT: br label %[[BB16:.*]]
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; CHECK: [[BB16]]:
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; CHECK-NEXT: [[DOT06:%.*]] = phi i32 [ 0, %[[BB]] ], [ [[ADD_OUTER_FC0:%.*]], %[[BB45:.*]] ]
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; CHECK-NEXT: [[INDVARS_IV105:%.*]] = phi i64 [ 0, %[[BB]] ], [ [[INC_OUTER_FC0:%.*]], %[[BB45]] ]
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; CHECK-NEXT: [[DOT023:%.*]] = phi i32 [ 0, %[[BB]] ], [ [[TMP46:%.*]], %[[BB45]] ]
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; CHECK-NEXT: [[INDVARS_IV42:%.*]] = phi i64 [ 0, %[[BB]] ], [ [[INDVARS_IV_NEXT5:%.*]], %[[BB45]] ]
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; CHECK-NEXT: br label %[[BB18:.*]]
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; CHECK: [[BB18]]:
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; CHECK-NEXT: [[INDVARS_IV74:%.*]] = phi i64 [ 0, %[[BB16]] ], [ [[INDVARS_IV_NEXT8:%.*]], %[[BB43:.*]] ]
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; CHECK-NEXT: [[INDVARS_IV1:%.*]] = phi i64 [ 0, %[[BB16]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[BB43]] ]
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; CHECK-NEXT: [[TMP:%.*]] = add nsw i32 [[DOT06]], -3
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; CHECK-NEXT: [[TMP19:%.*]] = add nuw nsw i64 [[INDVARS_IV105]], 3
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; CHECK-NEXT: [[TMP20:%.*]] = trunc i64 [[TMP19]] to i32
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; CHECK-NEXT: [[TMP21:%.*]] = mul nsw i32 [[TMP]], [[TMP20]]
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; CHECK-NEXT: [[TMP22:%.*]] = trunc i64 [[INDVARS_IV105]] to i32
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; CHECK-NEXT: [[TMP23:%.*]] = srem i32 [[TMP21]], [[TMP22]]
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; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [1024 x [1024 x i32]], ptr @A, i64 0, i64 [[INDVARS_IV105]], i64 [[INDVARS_IV74]]
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; CHECK-NEXT: store i32 [[TMP23]], ptr [[TMP24]], align 4
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; CHECK-NEXT: br label %[[BB25:.*]]
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; CHECK: [[BB25]]:
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; CHECK-NEXT: [[TMP36:%.*]] = add nsw i32 [[DOT023]], -3
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; CHECK-NEXT: [[TMP37:%.*]] = add nuw nsw i64 [[INDVARS_IV42]], 3
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; CHECK-NEXT: [[TMP38:%.*]] = trunc i64 [[TMP37]] to i32
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; CHECK-NEXT: [[TMP39:%.*]] = mul nsw i32 [[TMP36]], [[TMP38]]
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; CHECK-NEXT: [[TMP40:%.*]] = trunc i64 [[INDVARS_IV42]] to i32
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; CHECK-NEXT: [[TMP41:%.*]] = srem i32 [[TMP39]], [[TMP40]]
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; CHECK-NEXT: [[TMP42:%.*]] = getelementptr inbounds [1024 x [1024 x i32]], ptr @B, i64 0, i64 [[INDVARS_IV42]], i64 [[INDVARS_IV1]]
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; CHECK-NEXT: store i32 [[TMP41]], ptr [[TMP42]], align 4
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; CHECK-NEXT: br label %[[BB43]]
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; CHECK: [[BB31:.*]]:
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; CHECK-NEXT: br label %[[BB47:.*]]
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; CHECK: [[BB43]]:
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; CHECK-NEXT: [[INDVARS_IV_NEXT8]] = add nuw nsw i64 [[INDVARS_IV74]], 1
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; CHECK-NEXT: [[EXITCOND9:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT8]], 100
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV1]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], 100
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; CHECK-NEXT: br i1 [[EXITCOND]], label %[[BB18]], label %[[BB45]]
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; CHECK: [[BB45]]:
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; CHECK-NEXT: [[INC_OUTER_FC0]] = add nuw nsw i64 [[INDVARS_IV105]], 1
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; CHECK-NEXT: [[ADD_OUTER_FC0]] = add nuw nsw i32 [[DOT06]], 1
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; CHECK-NEXT: [[CMP_OUTER_FC0:%.*]] = icmp ne i64 [[INC_OUTER_FC0]], 100
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; CHECK-NEXT: [[INDVARS_IV_NEXT5]] = add nuw nsw i64 [[INDVARS_IV42]], 1
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; CHECK-NEXT: [[TMP46]] = add nuw nsw i32 [[DOT023]], 1
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; CHECK-NEXT: [[EXITCOND6:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT5]], 100
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; CHECK-NEXT: br i1 [[EXITCOND6]], label %[[BB16]], label %[[BB31]]
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; CHECK: [[BB47]]:
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; CHECK-NEXT: ret void
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;
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bb:
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br label %bb16
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bb16: ; preds = %bb, %bb27
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%.06 = phi i32 [ 0, %bb ], [ %add.outer.fc0, %bb27 ]
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%indvars.iv105 = phi i64 [ 0, %bb ], [ %inc.outer.fc0, %bb27 ]
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br label %bb18
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bb30: ; preds = %bb27
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br label %bb33
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bb18: ; preds = %bb16, %bb25
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%indvars.iv74 = phi i64 [ 0, %bb16 ], [ %indvars.iv.next8, %bb25 ]
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%tmp = add nsw i32 %.06, -3
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%tmp19 = add nuw nsw i64 %indvars.iv105, 3
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%tmp20 = trunc i64 %tmp19 to i32
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%tmp21 = mul nsw i32 %tmp, %tmp20
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%tmp22 = trunc i64 %indvars.iv105 to i32
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%tmp23 = srem i32 %tmp21, %tmp22
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%tmp24 = getelementptr inbounds [1024 x [1024 x i32]], ptr @A, i64 0, i64 %indvars.iv105, i64 %indvars.iv74
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store i32 %tmp23, ptr %tmp24, align 4
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br label %bb25
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bb25: ; preds = %bb18
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%indvars.iv.next8 = add nuw nsw i64 %indvars.iv74, 1
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%exitcond9 = icmp ne i64 %indvars.iv.next8, 100
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br i1 %exitcond9, label %bb18, label %bb27
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bb27: ; preds = %bb25
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%inc.outer.fc0 = add nuw nsw i64 %indvars.iv105, 1
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%add.outer.fc0 = add nuw nsw i32 %.06, 1
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%cmp.outer.fc0 = icmp ne i64 %inc.outer.fc0, 100
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br i1 %cmp.outer.fc0, label %bb16, label %bb30
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bb33: ; preds = %bb30, %bb45
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%.023 = phi i32 [ 0, %bb30 ], [ %tmp46, %bb45 ]
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%indvars.iv42 = phi i64 [ 0, %bb30 ], [ %indvars.iv.next5, %bb45 ]
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br label %bb35
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bb31: ; preds = %bb45
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br label %bb47
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bb35: ; preds = %bb33, %bb43
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%indvars.iv1 = phi i64 [ 0, %bb33 ], [ %indvars.iv.next, %bb43 ]
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%tmp36 = add nsw i32 %.023, -3
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%tmp37 = add nuw nsw i64 %indvars.iv42, 3
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%tmp38 = trunc i64 %tmp37 to i32
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%tmp39 = mul nsw i32 %tmp36, %tmp38
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%tmp40 = trunc i64 %indvars.iv42 to i32
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%tmp41 = srem i32 %tmp39, %tmp40
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%tmp42 = getelementptr inbounds [1024 x [1024 x i32]], ptr @B, i64 0, i64 %indvars.iv42, i64 %indvars.iv1
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store i32 %tmp41, ptr %tmp42, align 4
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br label %bb43
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bb43: ; preds = %bb35
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%indvars.iv.next = add nuw nsw i64 %indvars.iv1, 1
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%exitcond = icmp ne i64 %indvars.iv.next, 100
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br i1 %exitcond, label %bb35, label %bb45
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bb45: ; preds = %bb43
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%indvars.iv.next5 = add nuw nsw i64 %indvars.iv42, 1
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%tmp46 = add nuw nsw i32 %.023, 1
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%exitcond6 = icmp ne i64 %indvars.iv.next5, 100
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br i1 %exitcond6, label %bb33, label %bb31
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bb47: ; preds = %bb31
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ret void
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}
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