| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 |
| ; RUN: opt -passes=loop-distribute -enable-loop-distribute -verify-loop-info -verify-dom-info -S < %s \ |
| ; RUN: | FileCheck %s |
| |
| ; Check that definitions used outside the loop are handled correctly: (1) they |
| ; are not dropped (2) when version the loop, a phi is added to merge the value |
| ; from the non-distributed loop and the distributed loop. |
| ; |
| ; for (i = 0; i < n; i++) { |
| ; A[i + 1] = A[i] * B[i]; |
| ; ========================== |
| ; sum += C[i]; |
| ; } |
| |
| @B = common global ptr null, align 8 |
| @A = common global ptr null, align 8 |
| @C = common global ptr null, align 8 |
| @D = common global ptr null, align 8 |
| @E = common global ptr null, align 8 |
| @SUM = common global i32 0, align 8 |
| |
| define void @f() { |
| ; CHECK-LABEL: define void @f() { |
| ; CHECK-NEXT: [[ENTRY:.*:]] |
| ; CHECK-NEXT: [[A:%.*]] = load ptr, ptr @A, align 8 |
| ; CHECK-NEXT: [[B:%.*]] = load ptr, ptr @B, align 8 |
| ; CHECK-NEXT: [[C:%.*]] = load ptr, ptr @C, align 8 |
| ; CHECK-NEXT: [[D:%.*]] = load ptr, ptr @D, align 8 |
| ; CHECK-NEXT: [[E:%.*]] = load ptr, ptr @E, align 8 |
| ; CHECK-NEXT: br label %[[FOR_BODY_LVER_CHECK:.*]] |
| ; CHECK: [[FOR_BODY_LVER_CHECK]]: |
| ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[A]], i64 84 |
| ; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[C]], i64 80 |
| ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[A]], [[SCEVGEP1]] |
| ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[C]], [[SCEVGEP]] |
| ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label %[[FOR_BODY_PH_LVER_ORIG:.*]], label %[[FOR_BODY_PH_LDIST1:.*]] |
| ; CHECK: [[FOR_BODY_PH_LVER_ORIG]]: |
| ; CHECK-NEXT: br label %[[FOR_BODY_LVER_ORIG:.*]] |
| ; CHECK: [[FOR_BODY_LVER_ORIG]]: |
| ; CHECK-NEXT: [[IND_LVER_ORIG:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH_LVER_ORIG]] ], [ [[ADD_LVER_ORIG:%.*]], %[[FOR_BODY_LVER_ORIG]] ] |
| ; CHECK-NEXT: [[SUM_LVER_ORIG:%.*]] = phi i32 [ 0, %[[FOR_BODY_PH_LVER_ORIG]] ], [ [[SUM_ADD_LVER_ORIG:%.*]], %[[FOR_BODY_LVER_ORIG]] ] |
| ; CHECK-NEXT: [[ARRAYIDXA_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND_LVER_ORIG]] |
| ; CHECK-NEXT: [[LOADA_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXA_LVER_ORIG]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDXB_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND_LVER_ORIG]] |
| ; CHECK-NEXT: [[LOADB_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXB_LVER_ORIG]], align 4 |
| ; CHECK-NEXT: [[MULA_LVER_ORIG:%.*]] = mul i32 [[LOADB_LVER_ORIG]], [[LOADA_LVER_ORIG]] |
| ; CHECK-NEXT: [[ADD_LVER_ORIG]] = add nuw nsw i64 [[IND_LVER_ORIG]], 1 |
| ; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD_LVER_ORIG]] |
| ; CHECK-NEXT: store i32 [[MULA_LVER_ORIG]], ptr [[ARRAYIDXA_PLUS_4_LVER_ORIG]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDXC_LVER_ORIG:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND_LVER_ORIG]] |
| ; CHECK-NEXT: [[LOADC_LVER_ORIG:%.*]] = load i32, ptr [[ARRAYIDXC_LVER_ORIG]], align 4 |
| ; CHECK-NEXT: [[SUM_ADD_LVER_ORIG]] = add nuw nsw i32 [[SUM_LVER_ORIG]], [[LOADC_LVER_ORIG]] |
| ; CHECK-NEXT: [[EXITCOND_LVER_ORIG:%.*]] = icmp eq i64 [[ADD_LVER_ORIG]], 20 |
| ; CHECK-NEXT: br i1 [[EXITCOND_LVER_ORIG]], label %[[FOR_END_LOOPEXIT:.*]], label %[[FOR_BODY_LVER_ORIG]] |
| ; CHECK: [[FOR_BODY_PH_LDIST1]]: |
| ; CHECK-NEXT: br label %[[FOR_BODY_LDIST1:.*]] |
| ; CHECK: [[FOR_BODY_LDIST1]]: |
| ; CHECK-NEXT: [[IND_LDIST1:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH_LDIST1]] ], [ [[ADD_LDIST1:%.*]], %[[FOR_BODY_LDIST1]] ] |
| ; CHECK-NEXT: [[ARRAYIDXA_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND_LDIST1]] |
| ; CHECK-NEXT: [[LOADA_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXA_LDIST1]], align 4, !alias.scope [[META0:![0-9]+]], !noalias [[META3:![0-9]+]] |
| ; CHECK-NEXT: [[ARRAYIDXB_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND_LDIST1]] |
| ; CHECK-NEXT: [[LOADB_LDIST1:%.*]] = load i32, ptr [[ARRAYIDXB_LDIST1]], align 4, !alias.scope [[META5:![0-9]+]] |
| ; CHECK-NEXT: [[MULA_LDIST1:%.*]] = mul i32 [[LOADB_LDIST1]], [[LOADA_LDIST1]] |
| ; CHECK-NEXT: [[ADD_LDIST1]] = add nuw nsw i64 [[IND_LDIST1]], 1 |
| ; CHECK-NEXT: [[ARRAYIDXA_PLUS_4_LDIST1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD_LDIST1]] |
| ; CHECK-NEXT: store i32 [[MULA_LDIST1]], ptr [[ARRAYIDXA_PLUS_4_LDIST1]], align 4, !alias.scope [[META0]], !noalias [[META3]] |
| ; CHECK-NEXT: [[EXITCOND_LDIST1:%.*]] = icmp eq i64 [[ADD_LDIST1]], 20 |
| ; CHECK-NEXT: br i1 [[EXITCOND_LDIST1]], label %[[FOR_BODY_PH:.*]], label %[[FOR_BODY_LDIST1]] |
| ; CHECK: [[FOR_BODY_PH]]: |
| ; CHECK-NEXT: br label %[[FOR_BODY:.*]] |
| ; CHECK: [[FOR_BODY]]: |
| ; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, %[[FOR_BODY_PH]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ] |
| ; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, %[[FOR_BODY_PH]] ], [ [[SUM_ADD:%.*]], %[[FOR_BODY]] ] |
| ; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 1 |
| ; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND]] |
| ; CHECK-NEXT: [[LOADC:%.*]] = load i32, ptr [[ARRAYIDXC]], align 4, !alias.scope [[META3]] |
| ; CHECK-NEXT: [[SUM_ADD]] = add nuw nsw i32 [[SUM]], [[LOADC]] |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 20 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END_LOOPEXIT2:.*]], label %[[FOR_BODY]] |
| ; CHECK: [[FOR_END_LOOPEXIT]]: |
| ; CHECK-NEXT: [[SUM_ADD_LVER_PH:%.*]] = phi i32 [ [[SUM_ADD_LVER_ORIG]], %[[FOR_BODY_LVER_ORIG]] ] |
| ; CHECK-NEXT: br label %[[FOR_END:.*]] |
| ; CHECK: [[FOR_END_LOOPEXIT2]]: |
| ; CHECK-NEXT: [[SUM_ADD_LVER_PH3:%.*]] = phi i32 [ [[SUM_ADD]], %[[FOR_BODY]] ] |
| ; CHECK-NEXT: br label %[[FOR_END]] |
| ; CHECK: [[FOR_END]]: |
| ; CHECK-NEXT: [[SUM_ADD_LVER:%.*]] = phi i32 [ [[SUM_ADD_LVER_PH]], %[[FOR_END_LOOPEXIT]] ], [ [[SUM_ADD_LVER_PH3]], %[[FOR_END_LOOPEXIT2]] ] |
| ; CHECK-NEXT: store i32 [[SUM_ADD_LVER]], ptr @SUM, align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %a = load ptr, ptr @A, align 8 |
| %b = load ptr, ptr @B, align 8 |
| %c = load ptr, ptr @C, align 8 |
| %d = load ptr, ptr @D, align 8 |
| %e = load ptr, ptr @E, align 8 |
| |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] |
| %sum = phi i32 [ 0, %entry ], [ %sum_add, %for.body ] |
| |
| %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind |
| %loadA = load i32, ptr %arrayidxA, align 4 |
| |
| %arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind |
| %loadB = load i32, ptr %arrayidxB, align 4 |
| |
| %mulA = mul i32 %loadB, %loadA |
| |
| %add = add nuw nsw i64 %ind, 1 |
| %arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add |
| store i32 %mulA, ptr %arrayidxA_plus_4, align 4 |
| |
| %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind |
| %loadC = load i32, ptr %arrayidxC, align 4 |
| |
| %sum_add = add nuw nsw i32 %sum, %loadC |
| |
| %exitcond = icmp eq i64 %add, 20 |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| store i32 %sum_add, ptr @SUM, align 4 |
| ret void |
| } |
| ;. |
| ; CHECK: [[META0]] = !{[[META1:![0-9]+]]} |
| ; CHECK: [[META1]] = distinct !{[[META1]], [[META2:![0-9]+]]} |
| ; CHECK: [[META2]] = distinct !{[[META2]], !"LVerDomain"} |
| ; CHECK: [[META3]] = !{[[META4:![0-9]+]]} |
| ; CHECK: [[META4]] = distinct !{[[META4]], [[META2]]} |
| ; CHECK: [[META5]] = !{[[META6:![0-9]+]]} |
| ; CHECK: [[META6]] = distinct !{[[META6]], [[META2]]} |
| ;. |
