; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-inst-comments --version 6 ; RUN: opt -passes='print' -disable-output < %s 2>&1 | FileCheck %s ; Make sure that the memcpy is clobbered by the memoryphi, not by liveOnEntry. define void @test(i1 %c, ptr %path, ptr %name) { ; CHECK-LABEL: define void @test( ; CHECK-SAME: i1 [[C:%.*]], ptr [[PATH:%.*]], ptr [[NAME:%.*]]) { ; CHECK-NEXT: [[ENTRY:.*]]: ; CHECK-NEXT: [[TMP:%.*]] = alloca [260 x i8], align 16 ; CHECK-NEXT: br label %[[WHILE_BODY:.*]] ; CHECK: [[WHILE_BODY]]: ; CHECK-NEXT: ; 3 = MemoryPhi({entry,liveOnEntry},{while.body,1}) ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], %[[WHILE_BODY]] ], [ 259, %[[ENTRY]] ] ; CHECK-NEXT: [[IV_NEXT]] = add nsw i64 [[IV]], -1 ; CHECK-NEXT: [[TMP_IV:%.*]] = getelementptr inbounds [260 x i8], ptr [[TMP]], i64 0, i64 [[IV]] ; CHECK-NEXT: ; 1 = MemoryDef(3)->3 - clobbered by 3 = MemoryPhi({entry,liveOnEntry},{while.body,1}) ; CHECK-NEXT: store i8 42, ptr [[TMP_IV]], align 1 ; CHECK-NEXT: br i1 [[C]], label %[[WHILE_BODY]], label %[[EXIT:.*]] ; CHECK: [[EXIT]]: ; CHECK-NEXT: [[TMP_IV_1:%.*]] = getelementptr inbounds i8, ptr [[TMP_IV]], i64 1 ; CHECK-NEXT: [[SUB7:%.*]] = sub nsw i64 259, [[IV]] ; CHECK-NEXT: ; 2 = MemoryDef(1)->3 - clobbered by 3 = MemoryPhi({entry,liveOnEntry},{while.body,1}) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 [[NAME]], ptr nonnull align 1 [[TMP_IV_1]], i64 [[SUB7]], i1 false) ; CHECK-NEXT: ret void ; entry: %tmp = alloca [260 x i8], align 16 br label %while.body while.body: %iv = phi i64 [ %iv.next, %while.body ], [ 259, %entry ] %iv.next = add nsw i64 %iv, -1 %tmp.iv = getelementptr inbounds [260 x i8], ptr %tmp, i64 0, i64 %iv store i8 42, ptr %tmp.iv, align 1 br i1 %c, label %while.body, label %exit exit: %tmp.iv.1 = getelementptr inbounds i8, ptr %tmp.iv, i64 1 %sub7 = sub nsw i64 259, %iv call void @llvm.memcpy(ptr align 1 %name, ptr nonnull align 1 %tmp.iv.1, i64 %sub7, i1 false) ret void }