; RUN: llc -march=bpf < %s | FileCheck %s ; ; The IR is generated from a bpftrace script (https://github.com/iovisor/bpftrace/issues/1305) ; and then slightly adapted for easy unit testing. ; The llvm bugzilla link: https://bugs.llvm.org/show_bug.cgi?id=47591 %printf_t = type { i64, i64 } define i64 @"kprobe:blk_update_request"(ptr %0) local_unnamed_addr section "s_kprobe:blk_update_request_1" { entry: %"struct kernfs_node.parent" = alloca i64, align 8 %printf_args = alloca %printf_t, align 8 %"struct cgroup.kn" = alloca i64, align 8 %"struct cgroup_subsys_state.cgroup" = alloca i64, align 8 %"struct blkcg_gq.blkcg" = alloca i64, align 8 %"struct bio.bi_blkg" = alloca i64, align 8 %"struct request.bio" = alloca i64, align 8 %1 = getelementptr i8, ptr %0, i64 112 %arg0 = load volatile i64, ptr %1, align 8 %2 = add i64 %arg0, 56 %3 = bitcast ptr %"struct request.bio" to ptr call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %3) %probe_read = call i64 inttoptr (i64 4 to ptr)(ptr nonnull %"struct request.bio", i32 8, i64 %2) %4 = load i64, ptr %"struct request.bio", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %3) %5 = add i64 %4, 72 %6 = bitcast ptr %"struct bio.bi_blkg" to ptr call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %6) %probe_read1 = call i64 inttoptr (i64 5 to ptr)(ptr nonnull %"struct bio.bi_blkg", i32 8, i64 %5) %7 = load i64, ptr %"struct bio.bi_blkg", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %6) %8 = add i64 %7, 40 %9 = bitcast ptr %"struct blkcg_gq.blkcg" to ptr call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %9) %probe_read2 = call i64 inttoptr (i64 6 to ptr)(ptr nonnull %"struct blkcg_gq.blkcg", i32 8, i64 %8) %10 = load i64, ptr %"struct blkcg_gq.blkcg", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %9) %11 = bitcast ptr %"struct cgroup_subsys_state.cgroup" to ptr call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %11) %probe_read3 = call i64 inttoptr (i64 7 to ptr)(ptr nonnull %"struct cgroup_subsys_state.cgroup", i32 8, i64 %10) %12 = load i64, ptr %"struct cgroup_subsys_state.cgroup", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %11) %13 = add i64 %12, 288 %14 = bitcast ptr %"struct cgroup.kn" to ptr call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %14) %probe_read4 = call i64 inttoptr (i64 8 to ptr)(ptr nonnull %"struct cgroup.kn", i32 8, i64 %13) %15 = load i64, ptr %"struct cgroup.kn", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %14) call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %printf_args) %16 = add i64 %15, 8 %17 = bitcast ptr %"struct kernfs_node.parent" to ptr store i64 0, ptr %printf_args, align 8 call void @llvm.lifetime.start.p0(i64 -1, ptr nonnull %17) ; CHECK: call 8 ; CHECK-NOT: r{{[0-9]+}} = 0 ; CHECK: [[REG3:r[0-9]+]] = *(u64 *)(r10 - 24) ; CHECK: [[REG1:r[0-9]+]] = 0 ; CHECK: *(u64 *)(r10 - 24) = [[REG1]] %probe_read5 = call i64 inttoptr (i64 9 to ptr)(ptr nonnull %"struct kernfs_node.parent", i32 8, i64 %16) %18 = load i64, ptr %"struct kernfs_node.parent", align 8 call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %17) %19 = getelementptr inbounds %printf_t, ptr %printf_args, i64 0, i32 1 store i64 %18, ptr %19, align 8 %get_cpu_id = call i64 inttoptr (i64 18 to ptr)() %perf_event_output = call i64 inttoptr (i64 10 to ptr)(ptr %0, i64 2, i64 %get_cpu_id, ptr nonnull %printf_args, i64 16) call void @llvm.lifetime.end.p0(i64 -1, ptr nonnull %printf_args) ret i64 0 } ; Function Attrs: argmemonly nounwind willreturn declare void @llvm.lifetime.start.p0(i64 immarg %0, ptr nocapture %1) #1 ; Function Attrs: argmemonly nounwind willreturn declare void @llvm.lifetime.end.p0(i64 immarg %0, ptr nocapture %1) #1 attributes #0 = { nounwind } attributes #1 = { argmemonly nounwind willreturn }