; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s ; performCallSlotOptzn in MemCpy should not exchange the calls to ; @llvm.lifetime.start and @llvm.memcpy. declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) declare void @llvm.lifetime.start.p0(i64, ptr nocapture) declare void @llvm.lifetime.end.p0(i64, ptr nocapture) define void @call_slot(ptr nocapture dereferenceable(16) %arg1) { ; CHECK-LABEL: @call_slot( ; CHECK-NEXT: bb: ; CHECK-NEXT: [[TMP:%.*]] = alloca [8 x i8], align 8 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[TMP]]) ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[TMP]], i64 7 ; CHECK-NEXT: store i8 0, ptr [[TMP10]], align 1 ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 16, ptr [[TMP]]) ; CHECK-NEXT: ret void ; bb: %tmp = alloca [8 x i8], align 8 call void @llvm.lifetime.start.p0(i64 16, ptr %tmp) %tmp10 = getelementptr inbounds i8, ptr %tmp, i64 7 store i8 0, ptr %tmp10, align 1 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %arg1, ptr align 8 %tmp, i64 16, i1 false) call void @llvm.lifetime.end.p0(i64 16, ptr %tmp) ret void } define void @memcpy_memcpy_across_lifetime(ptr noalias %p1, ptr noalias %p2, ptr noalias %p3) { ; CHECK-LABEL: @memcpy_memcpy_across_lifetime( ; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[A]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[A]], ptr [[P1:%.*]], i64 16, i1 false) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P1]], ptr [[P2:%.*]], i64 16, i1 false) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P2]], ptr [[A]], i64 16, i1 false) ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 16, ptr [[A]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P3:%.*]], ptr [[P2]], i64 16, i1 false) ; CHECK-NEXT: ret void ; %a = alloca [16 x i8] call void @llvm.lifetime.start.p0(i64 16, ptr %a) call void @llvm.memcpy.p0.p0.i64(ptr %a, ptr %p1, i64 16, i1 false) call void @llvm.memcpy.p0.p0.i64(ptr %p1, ptr %p2, i64 16, i1 false) call void @llvm.memcpy.p0.p0.i64(ptr %p2, ptr %a, i64 16, i1 false) call void @llvm.lifetime.end.p0(i64 16, ptr %a) call void @llvm.memcpy.p0.p0.i64(ptr %p3, ptr %p2, i64 16, i1 false) ret void } declare void @call(ptr) define i32 @call_slot_move_lifetime_start() { ; CHECK-LABEL: @call_slot_move_lifetime_start( ; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4 ; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: call void @call(ptr [[DST]]) ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4 ; CHECK-NEXT: ret i32 [[V]] ; %tmp = alloca i32 %dst = alloca i32 call void @call(ptr %tmp) call void @llvm.lifetime.start.p0(i64 4, ptr %dst) call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false) call void @llvm.lifetime.end.p0(i64 4, ptr %dst) %v = load i32, ptr %dst ret i32 %v } define i32 @call_slot_two_lifetime_starts() { ; CHECK-LABEL: @call_slot_two_lifetime_starts( ; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4 ; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @call(ptr [[TMP]]) ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[DST]], ptr align 4 [[TMP]], i64 4, i1 false) ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4 ; CHECK-NEXT: ret i32 [[V]] ; %tmp = alloca i32 %dst = alloca i32 call void @call(ptr %tmp) call void @llvm.lifetime.start.p0(i64 4, ptr %dst) call void @llvm.lifetime.start.p0(i64 4, ptr %dst) call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false) call void @llvm.lifetime.end.p0(i64 4, ptr %dst) %v = load i32, ptr %dst ret i32 %v } define i32 @call_slot_clobber_before_lifetime_start() { ; CHECK-LABEL: @call_slot_clobber_before_lifetime_start( ; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4 ; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @call(ptr [[TMP]]) ; CHECK-NEXT: store i32 0, ptr [[DST]], align 4 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[DST]], ptr align 4 [[TMP]], i64 4, i1 false) ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]]) ; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4 ; CHECK-NEXT: ret i32 [[V]] ; %tmp = alloca i32 %dst = alloca i32 call void @call(ptr %tmp) store i32 0, ptr %dst call void @llvm.lifetime.start.p0(i64 4, ptr %dst) call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false) call void @llvm.lifetime.end.p0(i64 4, ptr %dst) %v = load i32, ptr %dst ret i32 %v } define void @call_slot_lifetime_bitcast(ptr %ptr) { ; CHECK-LABEL: @call_slot_lifetime_bitcast( ; CHECK-NEXT: [[TMP1:%.*]] = alloca i32, align 4 ; CHECK-NEXT: [[TMP2:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[TMP2]], ptr align 4 [[PTR:%.*]], i64 4, i1 false) ; CHECK-NEXT: [[TMP1_CAST:%.*]] = bitcast ptr [[TMP1]] to ptr ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr nonnull [[TMP1_CAST]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[TMP1_CAST]], ptr align 4 [[PTR]], i64 4, i1 false) ; CHECK-NEXT: ret void ; %tmp1 = alloca i32 %tmp2 = alloca i32 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp2, ptr align 4 %ptr, i64 4, i1 false) %tmp1.cast = bitcast ptr %tmp1 to ptr call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %tmp1.cast) call void @llvm.memcpy.p0.p0.i64(ptr align 4 %tmp1.cast, ptr align 4 %tmp2, i64 4, i1 false) ret void }