1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5 2; RUN: opt -passes='print<access-info>' -disable-output 2>&1 < %s | FileCheck %s 3 4define void @test(ptr noalias %x, ptr noalias %y, ptr noalias %z) { 5; CHECK-LABEL: 'test' 6; CHECK-NEXT: loop: 7; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop 8; CHECK-NEXT: Unsafe indirect dependence. 9; CHECK-NEXT: Dependences: 10; CHECK-NEXT: IndirectUnsafe: 11; CHECK-NEXT: %load = load double, ptr %gep.sel, align 8 -> 12; CHECK-NEXT: store double %load, ptr %gep.sel2, align 8 13; CHECK-EMPTY: 14; CHECK-NEXT: Run-time memory checks: 15; CHECK-NEXT: Grouped accesses: 16; CHECK-EMPTY: 17; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. 18; CHECK-NEXT: SCEV assumptions: 19; CHECK-EMPTY: 20; CHECK-NEXT: Expressions re-written: 21; 22entry: 23 %gep.y = getelementptr double, ptr %y, i64 -32 24 br label %loop 25 26loop: 27 %iv = phi i64 [ %iv.next, %loop ], [ 0, %entry ] 28 %icmp = icmp ule i64 %iv, 32 29 %sel = select i1 %icmp, ptr %x, ptr %gep.y 30 %gep.sel = getelementptr inbounds double, ptr %sel, i64 %iv 31 %load = load double, ptr %gep.sel, align 8 32 %sel2 = select i1 %icmp, ptr %y, ptr %z 33 %gep.sel2 = getelementptr inbounds double, ptr %sel2, i64 %iv 34 store double %load, ptr %gep.sel2, align 8 35 %iv.next = add nuw nsw i64 %iv, 1 36 %exit.cond = icmp eq i64 %iv, 94 37 br i1 %exit.cond, label %exit, label %loop 38 39exit: 40 ret void 41} 42 43; Same as previous test, but with selects replaced by phis in the same block. 44define void @test_phi(ptr noalias %x, ptr noalias %y, ptr noalias %z) { 45; CHECK-LABEL: 'test_phi' 46; CHECK-NEXT: loop: 47; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop 48; CHECK-NEXT: Unsafe indirect dependence. 49; CHECK-NEXT: Dependences: 50; CHECK-NEXT: IndirectUnsafe: 51; CHECK-NEXT: %load = load double, ptr %gep.sel, align 8 -> 52; CHECK-NEXT: store double %load, ptr %gep.sel2, align 8 53; CHECK-EMPTY: 54; CHECK-NEXT: Run-time memory checks: 55; CHECK-NEXT: Grouped accesses: 56; CHECK-EMPTY: 57; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. 58; CHECK-NEXT: SCEV assumptions: 59; CHECK-EMPTY: 60; CHECK-NEXT: Expressions re-written: 61; 62entry: 63 %gep.y = getelementptr double, ptr %y, i64 -32 64 br label %loop 65 66loop: 67 %iv = phi i64 [ %iv.next, %latch ], [ 0, %entry ] 68 %icmp = icmp ule i64 %iv, 32 69 br i1 %icmp, label %if, label %latch 70 71if: 72 br label %latch 73 74latch: 75 %sel = phi ptr [ %x, %if ], [ %gep.y, %loop ] 76 %sel2 = phi ptr [ %y, %if ], [ %z, %loop ] 77 %gep.sel = getelementptr inbounds double, ptr %sel, i64 %iv 78 %load = load double, ptr %gep.sel, align 8 79 %gep.sel2 = getelementptr inbounds double, ptr %sel2, i64 %iv 80 store double %load, ptr %gep.sel2, align 8 81 %iv.next = add nuw nsw i64 %iv, 1 82 %exit.cond = icmp eq i64 %iv, 94 83 br i1 %exit.cond, label %exit, label %loop 84 85exit: 86 ret void 87} 88