; RUN: opt -loop-accesses -analyze -S < %s | FileCheck %s ; RUN: opt -passes='require,require,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck %s ; This is the test case from PR26314. ; When we were retrying dependence checking with memchecks only, ; the loop-invariant access in the inner loop was incorrectly determined to be wrapping ; because it was not strided in the inner loop. ; #define Z 32 ; typedef struct s { ; int v1[Z]; ; int v2[Z]; ; int v3[Z][Z]; ; } s; ; ; void slow_function (s* const obj) { ; for (int j=0; jv1[k] + obj->v2[j]; ; obj->v3[j][k] += x; ; } ; } ; } ; CHECK: function 'Test': ; CHECK: .inner: ; CHECK-NEXT: Memory dependences are safe ; CHECK-NEXT: Dependences: ; CHECK-NEXT: Run-time memory checks: ; CHECK: Check 0: ; CHECK: Check 1: target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" %struct.s = type { [32 x i32], [32 x i32], [32 x [32 x i32]] } define void @Test(%struct.s* nocapture %obj) #0 { br label %.outer.preheader .outer.preheader: %i = phi i64 [ 0, %0 ], [ %i.next, %.outer ] %1 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 1, i64 %i br label %.inner .exit: ret void .outer: %i.next = add nuw nsw i64 %i, 1 %exitcond.outer = icmp eq i64 %i.next, 32 br i1 %exitcond.outer, label %.exit, label %.outer.preheader .inner: %j = phi i64 [ 0, %.outer.preheader ], [ %j.next, %.inner ] %2 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 0, i64 %j %3 = load i32, i32* %2 %4 = load i32, i32* %1 %5 = add nsw i32 %4, %3 %6 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 2, i64 %i, i64 %j %7 = load i32, i32* %6 %8 = add nsw i32 %5, %7 store i32 %8, i32* %6 %j.next = add nuw nsw i64 %j, 1 %exitcond.inner = icmp eq i64 %j.next, 32 br i1 %exitcond.inner, label %.outer, label %.inner }