68 lines
2.9 KiB
LLVM
68 lines
2.9 KiB
LLVM
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; RUN: llc -march=bpfel -o - %s | FileCheck %s
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; RUN: llc -march=bpfeb -o - %s | FileCheck %s
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; Source code:
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; struct ipv6_key_t {
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; unsigned pid;
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; unsigned __int128 saddr;
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; unsigned short lport;
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; };
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;
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; extern void test1(void *);
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; int test(int pid) {
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; struct ipv6_key_t ipv6_key = {.pid = pid};
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; test1(&ipv6_key);
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; return 0;
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; }
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; Compilation flag:
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; clang -target bpf -O2 -S -emit-llvm t.c
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%struct.ipv6_key_t = type { i32, i128, i16 }
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; Function Attrs: nounwind
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define dso_local i32 @test(i32 %pid) local_unnamed_addr #0 {
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entry:
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%ipv6_key = alloca %struct.ipv6_key_t, align 16
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%0 = bitcast %struct.ipv6_key_t* %ipv6_key to i8*
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call void @llvm.lifetime.start.p0i8(i64 48, i8* nonnull %0) #4
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call void @llvm.memset.p0i8.i64(i8* nonnull align 16 dereferenceable(48) %0, i8 0, i64 48, i1 false)
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%pid1 = getelementptr inbounds %struct.ipv6_key_t, %struct.ipv6_key_t* %ipv6_key, i64 0, i32 0
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store i32 %pid, i32* %pid1, align 16, !tbaa !2
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call void @test1(i8* nonnull %0) #4
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call void @llvm.lifetime.end.p0i8(i64 48, i8* nonnull %0) #4
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ret i32 0
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}
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; CHECK-LABEL: test
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; CHECK: *(u64 *)(r10 - 48) = r{{[0-9]+}}
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; CHECK: *(u32 *)(r10 - 48) = r{{[0-9]+}}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
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; Function Attrs: argmemonly nounwind willreturn writeonly
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #2
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declare dso_local void @test1(i8*) local_unnamed_addr #3
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
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attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { argmemonly nounwind willreturn }
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attributes #2 = { argmemonly nounwind willreturn writeonly }
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attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #4 = { nounwind }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project.git 55fc7a47f8f18f84b44ff16f4e7a420c0a42ddf1)"}
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!2 = !{!3, !4, i64 0}
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!3 = !{!"ipv6_key_t", !4, i64 0, !7, i64 16, !8, i64 32}
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!4 = !{!"int", !5, i64 0}
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!5 = !{!"omnipotent char", !6, i64 0}
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!6 = !{!"Simple C/C++ TBAA"}
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!7 = !{!"__int128", !5, i64 0}
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!8 = !{!"short", !5, i64 0}
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