1 ; RUN: llc -march=bpfel < %s | FileCheck %s
2 ; RUN: llc -march=bpfel -mcpu=v3 < %s | FileCheck %s
5 ; /* set aligned 4 to minimize the number of loads */
7 ; unsigned char id[20];
8 ; } __attribute__((aligned(4)));
10 ; /* try to compute a local build_id */
13 ; /* the global build_id to compare */
14 ; struct build_id id2;
18 ; struct build_id id1;
21 ; return __builtin_memcmp(&id1, &id2, sizeof(id1)) == 0;
24 ; clang -target bpf -S -O2 t.c -emit-llvm
27 %struct.build_id = type { [20 x i8] }
29 @id2 = dso_local global %struct.build_id zeroinitializer, align 4
31 ; Function Attrs: nounwind
32 define dso_local i32 @foo() local_unnamed_addr #0 {
34 %id11 = alloca [20 x i8], align 4
35 call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %id11) #4
36 call void @bar1(ptr noundef nonnull %id11) #4
37 %call = call i32 @memcmp(ptr noundef nonnull dereferenceable(20) %id11, ptr noundef nonnull dereferenceable(20) @id2, i64 noundef 20) #4
38 %cmp = icmp eq i32 %call, 0
39 %conv = zext i1 %cmp to i32
40 call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %id11) #4
44 ; CHECK-DAG: *(u32 *)(r1 + 0)
45 ; CHECK-DAG: *(u32 *)(r1 + 4)
46 ; CHECK-DAG: *(u32 *)(r10 - 16)
47 ; CHECK-DAG: *(u32 *)(r10 - 20)
48 ; CHECK-DAG: *(u32 *)(r10 - 8)
49 ; CHECK-DAG: *(u32 *)(r10 - 12)
50 ; CHECK-DAG: *(u32 *)(r1 + 8)
51 ; CHECK-DAG: *(u32 *)(r1 + 12)
52 ; CHECK-DAG: *(u32 *)(r2 + 16)
53 ; CHECK-DAG: *(u32 *)(r10 - 4)
55 ; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
56 declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
58 declare dso_local void @bar1(ptr noundef) local_unnamed_addr #2
60 ; Function Attrs: argmemonly mustprogress nofree nounwind readonly willreturn
61 declare dso_local i32 @memcmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #3
63 ; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
64 declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
66 attributes #0 = { nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
67 attributes #1 = { argmemonly mustprogress nofree nosync nounwind willreturn }
68 attributes #2 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
69 attributes #3 = { argmemonly mustprogress nofree nounwind readonly willreturn "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
70 attributes #4 = { nounwind }
72 !llvm.module.flags = !{!0, !1}
75 !0 = !{i32 1, !"wchar_size", i32 4}
76 !1 = !{i32 7, !"frame-pointer", i32 2}
77 !2 = !{!"clang version 15.0.0 (https://github.com/llvm/llvm-project.git dea65874b2505f8f5e8e51fd8cad6908feb375ec)"}