diff --git a/llvm/test/Analysis/LoopAccessAnalysis/invariant-dependence-before.ll b/llvm/test/Analysis/LoopAccessAnalysis/invariant-dependence-before.ll index 2a210a5a445b94..1e16d89f691717 100644 --- a/llvm/test/Analysis/LoopAccessAnalysis/invariant-dependence-before.ll +++ b/llvm/test/Analysis/LoopAccessAnalysis/invariant-dependence-before.ll @@ -754,3 +754,73 @@ loop: exit: ret void } + +define void @test_invar_vector_dependence_before_positive_strided_access_1(ptr %a) { +; CHECK-LABEL: 'test_invar_vector_dependence_before_positive_strided_access_1' +; CHECK-NEXT: loop: +; 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 +; CHECK-NEXT: Unknown data dependence. +; CHECK-NEXT: Dependences: +; CHECK-NEXT: Unknown: +; CHECK-NEXT: %l = load <4 x i8>, ptr %a, align 4 -> +; CHECK-NEXT: store i32 0, ptr %gep, align 4 +; CHECK-EMPTY: +; CHECK-NEXT: Run-time memory checks: +; CHECK-NEXT: Grouped accesses: +; CHECK-EMPTY: +; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. +; CHECK-NEXT: SCEV assumptions: +; CHECK-EMPTY: +; CHECK-NEXT: Expressions re-written: +; +entry: + %gep.off = getelementptr i8, ptr %a, i32 4 + br label %loop + +loop: + %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] + %gep = getelementptr i32, ptr %gep.off, i32 %iv + %l = load <4 x i8>, ptr %a + store i32 0, ptr %gep + %iv.next = add i32 %iv, 1 + %ec = icmp eq i32 %iv.next, 100 + br i1 %ec, label %exit, label %loop + +exit: + ret void +} + +define void @test_invar_scalable_dependence_before_positive_strided_access_1(ptr %a) { +; CHECK-LABEL: 'test_invar_scalable_dependence_before_positive_strided_access_1' +; CHECK-NEXT: loop: +; 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 +; CHECK-NEXT: Unknown data dependence. +; CHECK-NEXT: Dependences: +; CHECK-NEXT: Unknown: +; CHECK-NEXT: %l = load , ptr %a, align 4 -> +; CHECK-NEXT: store i32 0, ptr %gep, align 4 +; CHECK-EMPTY: +; CHECK-NEXT: Run-time memory checks: +; CHECK-NEXT: Grouped accesses: +; CHECK-EMPTY: +; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. +; CHECK-NEXT: SCEV assumptions: +; CHECK-EMPTY: +; CHECK-NEXT: Expressions re-written: +; +entry: + %gep.off = getelementptr i8, ptr %a, i32 4 + br label %loop + +loop: + %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] + %gep = getelementptr i32, ptr %gep.off, i32 %iv + %l = load , ptr %a + store i32 0, ptr %gep + %iv.next = add i32 %iv, 1 + %ec = icmp eq i32 %iv.next, 100 + br i1 %ec, label %exit, label %loop + +exit: + ret void +}