xref: /llvm-project/llvm/test/Transforms/IROutliner/illegal-memcpy.ll (revision f4b925ee7078f058602fd323e25f45f1ae91ca34)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -passes=verify,iroutliner -ir-outlining-no-cost -no-ir-sim-intrinsics < %s | FileCheck %s
3
4; This test checks that we do not outline memcpy intrinsics since it may require
5; extra address space checks.
6
7declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1)
8
9define i8 @function1(ptr noalias %s, ptr noalias %d, i64 %len) {
10; CHECK-LABEL: @function1(
11; CHECK-NEXT:  entry:
12; CHECK-NEXT:    [[B_LOC:%.*]] = alloca i8, align 1
13; CHECK-NEXT:    [[A_LOC:%.*]] = alloca i8, align 1
14; CHECK-NEXT:    [[RET_LOC:%.*]] = alloca i8, align 1
15; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[A_LOC]])
16; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[B_LOC]])
17; CHECK-NEXT:    call void @outlined_ir_func_1(ptr [[S:%.*]], ptr [[D:%.*]], ptr [[A_LOC]], ptr [[B_LOC]])
18; CHECK-NEXT:    [[A_RELOAD:%.*]] = load i8, ptr [[A_LOC]], align 1
19; CHECK-NEXT:    [[B_RELOAD:%.*]] = load i8, ptr [[B_LOC]], align 1
20; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[A_LOC]])
21; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[B_LOC]])
22; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[D]], ptr [[S]], i64 [[LEN:%.*]], i1 false)
23; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[RET_LOC]])
24; CHECK-NEXT:    call void @outlined_ir_func_0(i8 [[A_RELOAD]], i8 [[B_RELOAD]], ptr [[S]], ptr [[RET_LOC]])
25; CHECK-NEXT:    [[RET_RELOAD:%.*]] = load i8, ptr [[RET_LOC]], align 1
26; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[RET_LOC]])
27; CHECK-NEXT:    ret i8 [[RET_RELOAD]]
28;
29entry:
30  %a = load i8, ptr %s
31  %b = load i8, ptr %d
32  call void @llvm.memcpy.p0.p0.i64(ptr %d, ptr %s, i64 %len, i1 false)
33  %c = add i8 %a, %b
34  %ret = load i8, ptr %s
35  ret i8 %ret
36}
37
38define i8 @function2(ptr noalias %s, ptr noalias %d, i64 %len) {
39; CHECK-LABEL: @function2(
40; CHECK-NEXT:  entry:
41; CHECK-NEXT:    [[B_LOC:%.*]] = alloca i8, align 1
42; CHECK-NEXT:    [[A_LOC:%.*]] = alloca i8, align 1
43; CHECK-NEXT:    [[RET_LOC:%.*]] = alloca i8, align 1
44; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[A_LOC]])
45; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[B_LOC]])
46; CHECK-NEXT:    call void @outlined_ir_func_1(ptr [[S:%.*]], ptr [[D:%.*]], ptr [[A_LOC]], ptr [[B_LOC]])
47; CHECK-NEXT:    [[A_RELOAD:%.*]] = load i8, ptr [[A_LOC]], align 1
48; CHECK-NEXT:    [[B_RELOAD:%.*]] = load i8, ptr [[B_LOC]], align 1
49; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[A_LOC]])
50; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[B_LOC]])
51; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[D]], ptr [[S]], i64 [[LEN:%.*]], i1 false)
52; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 -1, ptr [[RET_LOC]])
53; CHECK-NEXT:    call void @outlined_ir_func_0(i8 [[A_RELOAD]], i8 [[B_RELOAD]], ptr [[S]], ptr [[RET_LOC]])
54; CHECK-NEXT:    [[RET_RELOAD:%.*]] = load i8, ptr [[RET_LOC]], align 1
55; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 -1, ptr [[RET_LOC]])
56; CHECK-NEXT:    ret i8 [[RET_RELOAD]]
57;
58entry:
59  %a = load i8, ptr %s
60  %b = load i8, ptr %d
61  call void @llvm.memcpy.p0.p0.i64(ptr %d, ptr %s, i64 %len, i1 false)
62  %c = add i8 %a, %b
63  %ret = load i8, ptr %s
64  ret i8 %ret
65}
66