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172a6f7d2f
bpftrace/bpftrace-0.11.0-irbuilderbpf.cpp-bpforc.h-Fix-compilation-with-LLVM-.patch
Jerome Marchand 172a6f7d2f Rebuild for LLVM 11 
Resolves: bz#1897622
2020-11-13 18:36:13 +01:00

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From d0f1159fafc52a31713d98d336d10e423e7eb5a0 Mon Sep 17 00:00:00 2001
From: Ovidiu Panait <ovidiu.panait@windriver.com>
Date: Thu, 6 Aug 2020 10:34:23 +0300
Subject: [PATCH] irbuilderbpf.cpp, bpforc.h: Fix compilation with LLVM 11
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fixes: #1384
Fix the following build errors when compiling with LLVM 11:
#1
----
/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:118:35: error: no match for call to ‘(bpftrace::BpfOrc::BpfOrc(llvm::TargetMachine*)::<lambda(const string&)>) (llvm::StringRef)’
118 | if (JITSymbol Sym = FindSymbol(*S)) {
| ~~~~~~~~~~^~~~
/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:118:35: note: candidate: ‘llvm::JITSymbol (*)(const string&)’ {aka ‘llvm::JITSymbol (*)(const std::__cxx11::basic_string<char>&)’} <conversion>
/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:118:35: note: candidate expects 2 arguments, 2 provided
In file included from /work/src/github.com/iovisor/bpftrace/src/ast/codegen_llvm.cpp:5:
/work/src/github.com/iovisor/bpftrace/src/bpforc.h:99:13: note: candidate: ‘bpftrace::BpfOrc::BpfOrc(llvm::TargetMachine*)::<lambda(const string&)>’
99 | [](const std::string &Name __attribute__((unused))) -> JITSymbol {
| ^
/work/src/github.com/iovisor/bpftrace/src/bpforc.h:99:13: note: no known conversion for argument 1 from ‘llvm::StringRef’ to ‘const string&’ {aka ‘const std::__cxx11::basic_string<char>&’}
In file included from /llvm/include/llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h:23,
#2
----
| /src/ast/irbuilderbpf.cpp: In member function 'llvm::CallInst* bpftrace::ast::IRBuilderBPF::createMapLookup(int, llvm::AllocaInst*)':
| /src/ast/irbuilderbpf.cpp:230:65: error: no matching function for call to 'bpftrace::ast::IRBuilderBPF::CreateCall(llvm::Constant*&, <brace-enclosed initializer list>, const char [12])'
| 230 | return CreateCall(lookup_func, { map_ptr, key }, "lookup_elem");
| | ^
| In file included from /src/ast/irbuilderbpf.h:9,
| from /src/ast/async_event_types.h:3,
| from /src/ast/irbuilderbpf.cpp:5:
| /usr/include/llvm/IR/IRBuilder.h:2324:13: note: candidate: 'llvm::CallInst* llvm::IRBuilderBase::CreateCall(llvm::FunctionType*, llvm::Value*, llvm::ArrayRef<llvm::Value*>, const llvm::Twine&, llvm::MDNode*)'
| 2324 | CallInst *CreateCall(FunctionType *FTy, Value *Callee,
| | ^~~~~~~~~~
| /usr/include/llvm/IR/IRBuilder.h:2324:38: note: no known conversion for argument 1 from 'llvm::Constant*' to 'llvm::FunctionType*'
| 2324 | CallInst *CreateCall(FunctionType *FTy, Value *Callee,
| | ~~~~~~~~~~~~~~^~~
The CreateCall part is based on the llvm 11 fix from bcc:
https://github.com/iovisor/bcc/commit/45e63f2b316cdce2d8cc925f6f14a8726ade9ff6
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---
src/ast/irbuilderbpf.cpp | 55 ++++++++++++++++++++++++++--------------
src/ast/irbuilderbpf.h | 1 +
src/bpforc.h | 6 +++++
3 files changed, 43 insertions(+), 19 deletions(-)
diff --git a/src/ast/irbuilderbpf.cpp b/src/ast/irbuilderbpf.cpp
index 8ae055e..4498e0f 100644
--- a/src/ast/irbuilderbpf.cpp
+++ b/src/ast/irbuilderbpf.cpp
@@ -201,10 +201,25 @@ llvm::Type *IRBuilderBPF::GetType(const SizedType &stype)
return ty;
}
+CallInst *IRBuilderBPF::createCall(Value *callee,
+ ArrayRef<Value *> args,
+ const Twine &Name)
+{
+#if LLVM_VERSION_MAJOR >= 11
+ auto *calleePtrType = cast<PointerType>(callee->getType());
+ auto *calleeType = cast<FunctionType>(calleePtrType->getElementType());
+ return CreateCall(calleeType, callee, args, Name);
+#else
+ return CreateCall(callee, args, Name);
+#endif
+}
+
CallInst *IRBuilderBPF::CreateBpfPseudoCall(int mapfd)
{
Function *pseudo_func = module_.getFunction("llvm.bpf.pseudo");
- return CreateCall(pseudo_func, {getInt64(BPF_PSEUDO_MAP_FD), getInt64(mapfd)}, "pseudo");
+ return createCall(pseudo_func,
+ { getInt64(BPF_PSEUDO_MAP_FD), getInt64(mapfd) },
+ "pseudo");
}
CallInst *IRBuilderBPF::CreateBpfPseudoCall(Map &map)
@@ -227,7 +242,7 @@ CallInst *IRBuilderBPF::createMapLookup(int mapfd, AllocaInst *key)
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_lookup_elem),
lookup_func_ptr_type);
- return CreateCall(lookup_func, { map_ptr, key }, "lookup_elem");
+ return createCall(lookup_func, { map_ptr, key }, "lookup_elem");
}
CallInst *IRBuilderBPF::CreateGetJoinMap(Value *ctx, const location &loc)
@@ -325,7 +340,7 @@ void IRBuilderBPF::CreateMapUpdateElem(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_update_elem),
update_func_ptr_type);
- CallInst *call = CreateCall(update_func,
+ CallInst *call = createCall(update_func,
{ map_ptr, key, val, flags },
"update_elem");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_map_update_elem, loc);
@@ -349,7 +364,7 @@ void IRBuilderBPF::CreateMapDeleteElem(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_map_delete_elem),
delete_func_ptr_type);
- CallInst *call = CreateCall(delete_func, { map_ptr, key }, "delete_elem");
+ CallInst *call = createCall(delete_func, { map_ptr, key }, "delete_elem");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_map_delete_elem, loc);
}
@@ -378,7 +393,7 @@ void IRBuilderBPF::CreateProbeRead(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_probe_read),
proberead_func_ptr_type);
- CallInst *call = CreateCall(proberead_func, { dst, size, src }, "probe_read");
+ CallInst *call = createCall(proberead_func, { dst, size, src }, "probe_read");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_probe_read, loc);
}
@@ -413,7 +428,7 @@ CallInst *IRBuilderBPF::CreateProbeReadStr(Value *ctx,
{
assert(ctx && ctx->getType() == getInt8PtrTy());
Constant *fn = createProbeReadStrFn(dst->getType(), src->getType());
- CallInst *call = CreateCall(fn,
+ CallInst *call = createCall(fn,
{ dst, getInt32(size), src },
"probe_read_str");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_probe_read_str, loc);
@@ -434,7 +449,7 @@ CallInst *IRBuilderBPF::CreateProbeReadStr(Value *ctx,
auto *size_i32 = CreateIntCast(size, getInt32Ty(), false);
Constant *fn = createProbeReadStrFn(dst->getType(), src->getType());
- CallInst *call = CreateCall(fn, { dst, size_i32, src }, "probe_read_str");
+ CallInst *call = createCall(fn, { dst, size_i32, src }, "probe_read_str");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_probe_read_str, loc);
return call;
}
@@ -717,7 +732,7 @@ CallInst *IRBuilderBPF::CreateGetNs()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_ktime_get_ns),
gettime_func_ptr_type);
- return CreateCall(gettime_func, {}, "get_ns");
+ return createCall(gettime_func, {}, "get_ns");
}
CallInst *IRBuilderBPF::CreateGetPidTgid()
@@ -730,7 +745,7 @@ CallInst *IRBuilderBPF::CreateGetPidTgid()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_current_pid_tgid),
getpidtgid_func_ptr_type);
- return CreateCall(getpidtgid_func, {}, "get_pid_tgid");
+ return createCall(getpidtgid_func, {}, "get_pid_tgid");
}
CallInst *IRBuilderBPF::CreateGetCurrentCgroupId()
@@ -744,7 +759,7 @@ CallInst *IRBuilderBPF::CreateGetCurrentCgroupId()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_current_cgroup_id),
getcgroupid_func_ptr_type);
- return CreateCall(getcgroupid_func, {}, "get_cgroup_id");
+ return createCall(getcgroupid_func, {}, "get_cgroup_id");
}
CallInst *IRBuilderBPF::CreateGetUidGid()
@@ -757,7 +772,7 @@ CallInst *IRBuilderBPF::CreateGetUidGid()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_current_uid_gid),
getuidgid_func_ptr_type);
- return CreateCall(getuidgid_func, {}, "get_uid_gid");
+ return createCall(getuidgid_func, {}, "get_uid_gid");
}
CallInst *IRBuilderBPF::CreateGetCpuId()
@@ -770,7 +785,7 @@ CallInst *IRBuilderBPF::CreateGetCpuId()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_smp_processor_id),
getcpuid_func_ptr_type);
- return CreateCall(getcpuid_func, {}, "get_cpu_id");
+ return createCall(getcpuid_func, {}, "get_cpu_id");
}
CallInst *IRBuilderBPF::CreateGetCurrentTask()
@@ -783,7 +798,7 @@ CallInst *IRBuilderBPF::CreateGetCurrentTask()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_current_task),
getcurtask_func_ptr_type);
- return CreateCall(getcurtask_func, {}, "get_cur_task");
+ return createCall(getcurtask_func, {}, "get_cur_task");
}
CallInst *IRBuilderBPF::CreateGetRandom()
@@ -796,7 +811,7 @@ CallInst *IRBuilderBPF::CreateGetRandom()
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_prandom_u32),
getrandom_func_ptr_type);
- return CreateCall(getrandom_func, {}, "get_random");
+ return createCall(getrandom_func, {}, "get_random");
}
CallInst *IRBuilderBPF::CreateGetStackId(Value *ctx,
@@ -826,7 +841,7 @@ CallInst *IRBuilderBPF::CreateGetStackId(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_stackid),
getstackid_func_ptr_type);
- CallInst *call = CreateCall(getstackid_func,
+ CallInst *call = createCall(getstackid_func,
{ ctx, map_ptr, flags_val },
"get_stackid");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_get_stackid, loc);
@@ -852,7 +867,7 @@ void IRBuilderBPF::CreateGetCurrentComm(Value *ctx,
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_get_current_comm),
getcomm_func_ptr_type);
- CallInst *call = CreateCall(getcomm_func,
+ CallInst *call = createCall(getcomm_func,
{ buf, getInt64(size) },
"get_comm");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_get_current_comm, loc);
@@ -883,7 +898,9 @@ void IRBuilderBPF::CreatePerfEventOutput(Value *ctx, Value *data, size_t size)
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_perf_event_output),
perfoutput_func_ptr_type);
- CreateCall(perfoutput_func, {ctx, map_ptr, flags_val, data, size_val}, "perf_event_output");
+ createCall(perfoutput_func,
+ { ctx, map_ptr, flags_val, data, size_val },
+ "perf_event_output");
}
void IRBuilderBPF::CreateSignal(Value *ctx, Value *sig, const location &loc)
@@ -899,7 +916,7 @@ void IRBuilderBPF::CreateSignal(Value *ctx, Value *sig, const location &loc)
Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_send_signal),
signal_func_ptr_type);
- CallInst *call = CreateCall(signal_func, { sig }, "signal");
+ CallInst *call = createCall(signal_func, { sig }, "signal");
CreateHelperErrorCond(ctx, call, libbpf::BPF_FUNC_send_signal, loc);
}
@@ -913,7 +930,7 @@ void IRBuilderBPF::CreateOverrideReturn(Value *ctx, Value *rc)
Constant *override_func = ConstantExpr::getCast(Instruction::IntToPtr,
getInt64(libbpf::BPF_FUNC_override_return),
override_func_ptr_type);
- CreateCall(override_func, { ctx, rc }, "override");
+ createCall(override_func, { ctx, rc }, "override");
}
Value *IRBuilderBPF::CreatKFuncArg(Value *ctx,
diff --git a/src/ast/irbuilderbpf.h b/src/ast/irbuilderbpf.h
index d4361a8..3111507 100644
--- a/src/ast/irbuilderbpf.h
+++ b/src/ast/irbuilderbpf.h
@@ -80,6 +80,7 @@ class IRBuilderBPF : public IRBuilder<>
CallInst *CreateGetRandom();
CallInst *CreateGetStackId(Value *ctx, bool ustack, StackType stack_type, const location& loc);
CallInst *CreateGetJoinMap(Value *ctx, const location& loc);
+ CallInst *createCall(Value *callee, ArrayRef<Value *> args, const Twine &Name);
void CreateGetCurrentComm(Value *ctx, AllocaInst *buf, size_t size, const location& loc);
void CreatePerfEventOutput(Value *ctx, Value *data, size_t size);
void CreateSignal(Value *ctx, Value *sig, const location &loc);
diff --git a/src/bpforc.h b/src/bpforc.h
index a42e031..295f703 100644
--- a/src/bpforc.h
+++ b/src/bpforc.h
@@ -96,9 +96,15 @@ class BpfOrc
: TM(TM_),
Resolver(createLegacyLookupResolver(
ES,
+#if LLVM_VERSION_MAJOR >= 11
+ [](llvm::StringRef Name __attribute__((unused))) -> JITSymbol {
+ return nullptr;
+ },
+#else
[](const std::string &Name __attribute__((unused))) -> JITSymbol {
return nullptr;
},
+#endif
[](Error Err) { cantFail(std::move(Err), "lookup failed"); })),
#if LLVM_VERSION_MAJOR > 8
ObjectLayer(AcknowledgeORCv1Deprecation,
--
2.25.4
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