78 lines
2.8 KiB
LLVM
78 lines
2.8 KiB
LLVM
|
; RUN: llc -march=bpfel < %s | FileCheck %s
|
||
|
|
; RUN: llc -march=bpfel -mcpu=v3 < %s | FileCheck %s
|
||
|
|
;
|
||
|
|
; Source code:
|
||
|
|
; /* set aligned 4 to minimize the number of loads */
|
||
|
|
; struct build_id {
|
||
|
|
; unsigned char id[20];
|
||
|
|
; } __attribute__((aligned(4)));
|
||
|
|
;
|
||
|
|
; /* try to compute a local build_id */
|
||
|
|
; void bar1(ptr);
|
||
|
|
;
|
||
|
|
; /* the global build_id to compare */
|
||
|
|
; struct build_id id2;
|
||
|
|
;
|
||
|
|
; int foo()
|
||
|
|
; {
|
||
|
|
; struct build_id id1;
|
||
|
|
;
|
||
|
|
; bar1(&id1);
|
||
|
|
; return __builtin_memcmp(&id1, &id2, sizeof(id1)) == 0;
|
||
|
|
; }
|
||
|
|
; Compilation flags:
|
||
|
|
; clang -target bpf -S -O2 t.c -emit-llvm
|
||
|
|
|
||
|
|
|
||
|
|
%struct.build_id = type { [20 x i8] }
|
||
|
|
|
||
|
|
@id2 = dso_local global %struct.build_id zeroinitializer, align 4
|
||
|
|
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
define dso_local i32 @foo() local_unnamed_addr #0 {
|
||
|
|
entry:
|
||
|
|
%id11 = alloca [20 x i8], align 4
|
||
|
|
call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %id11) #4
|
||
|
|
call void @bar1(ptr noundef nonnull %id11) #4
|
||
|
|
%call = call i32 @memcmp(ptr noundef nonnull dereferenceable(20) %id11, ptr noundef nonnull dereferenceable(20) @id2, i64 noundef 20) #4
|
||
|
|
%cmp = icmp eq i32 %call, 0
|
||
|
|
%conv = zext i1 %cmp to i32
|
||
|
|
call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %id11) #4
|
||
|
|
ret i32 %conv
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-DAG: *(u32 *)(r1 + 0)
|
||
|
|
; CHECK-DAG: *(u32 *)(r1 + 4)
|
||
|
|
; CHECK-DAG: *(u32 *)(r10 - 16)
|
||
|
|
; CHECK-DAG: *(u32 *)(r10 - 20)
|
||
|
|
; CHECK-DAG: *(u32 *)(r10 - 8)
|
||
|
|
; CHECK-DAG: *(u32 *)(r10 - 12)
|
||
|
|
; CHECK-DAG: *(u32 *)(r1 + 8)
|
||
|
|
; CHECK-DAG: *(u32 *)(r1 + 12)
|
||
|
|
; CHECK-DAG: *(u32 *)(r2 + 16)
|
||
|
|
; CHECK-DAG: *(u32 *)(r10 - 4)
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
|
||
|
|
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
|
||
|
|
|
||
|
|
declare dso_local void @bar1(ptr noundef) local_unnamed_addr #2
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly mustprogress nofree nounwind readonly willreturn
|
||
|
|
declare dso_local i32 @memcmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #3
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
|
||
|
|
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
|
||
|
|
|
||
|
|
attributes #0 = { nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
|
||
|
|
attributes #1 = { argmemonly mustprogress nofree nosync nounwind willreturn }
|
||
|
|
attributes #2 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
|
||
|
|
attributes #3 = { argmemonly mustprogress nofree nounwind readonly willreturn "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
|
||
|
|
attributes #4 = { nounwind }
|
||
|
|
|
||
|
|
!llvm.module.flags = !{!0, !1}
|
||
|
|
!llvm.ident = !{!2}
|
||
|
|
|
||
|
|
!0 = !{i32 1, !"wchar_size", i32 4}
|
||
|
|
!1 = !{i32 7, !"frame-pointer", i32 2}
|
||
|
|
!2 = !{!"clang version 15.0.0 (https://github.com/llvm/llvm-project.git dea65874b2505f8f5e8e51fd8cad6908feb375ec)"}
|