diff options
author | David Chisnall <csdavec@swan.ac.uk> | 2012-04-09 15:42:15 +0000 |
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committer | David Chisnall <csdavec@swan.ac.uk> | 2012-04-09 15:42:15 +0000 |
commit | 649ee3fec12dcf7167630ff88087ad116e9eefa6 (patch) | |
tree | 2b788913f6a8820107f5e6a76c9653a5b0ca70f9 /lib | |
parent | e2571793ba6fc13e5525b8d7224812f99842a1a4 (diff) |
Add -fobjc-trace to emit a call before and after each Objective-C message send
for hooking in code flow visualisation applications.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154321 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/CodeGen/CGObjCGNU.cpp | 15 | ||||
-rw-r--r-- | lib/Driver/Tools.cpp | 4 | ||||
-rw-r--r-- | lib/Frontend/CompilerInvocation.cpp | 3 |
3 files changed, 22 insertions, 0 deletions
diff --git a/lib/CodeGen/CGObjCGNU.cpp b/lib/CodeGen/CGObjCGNU.cpp index db0bd951c1..6cf370f79e 100644 --- a/lib/CodeGen/CGObjCGNU.cpp +++ b/lib/CodeGen/CGObjCGNU.cpp @@ -322,6 +322,11 @@ private: /// Function used for non-object declared property setters. LazyRuntimeFunction SetStructPropertyFn; + /// Function called before message sends, when tracing + LazyRuntimeFunction TraceEnterFn; + /// Function called after message sends, when tracing + LazyRuntimeFunction TraceExitFn; + /// The version of the runtime that this class targets. Must match the /// version in the runtime. int RuntimeVersion; @@ -768,6 +773,9 @@ CGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, PtrDiffTy, BoolTy, BoolTy, NULL); + TraceEnterFn.init(&CGM, "objc_trace_enter", VoidTy, IdTy, SelectorTy, NULL); + TraceExitFn.init(&CGM, "objc_trace_exit", VoidTy, IdTy, SelectorTy, NULL); + // IMP type llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, @@ -1212,12 +1220,19 @@ CGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); imp = EnforceType(Builder, imp, MSI.MessengerType); + if (CGM.getCodeGenOpts().ObjCTrace) { + Builder.CreateCall2(TraceEnterFn, Receiver, cmd); + } llvm::Instruction *call; RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); call->setMetadata(msgSendMDKind, node); + if (CGM.getCodeGenOpts().ObjCTrace) { + Builder.CreateCall2(TraceExitFn, Receiver, cmd); + } + if (!isPointerSizedReturn) { messageBB = CGF.Builder.GetInsertBlock(); diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index 8093d2f6df..3bb6818544 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -2400,6 +2400,10 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, CmdArgs.push_back("-fobjc-default-synthesize-properties"); } + if (Args.hasFlag(options::OPT_fobjc_trace, options::OPT_fno_objc_trace, + false)) + CmdArgs.push_back("-fobjc-trace"); + // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc. // NOTE: This logic is duplicated in ToolChains.cpp. bool ARC = isObjCAutoRefCount(Args); diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp index 02947c778c..aae0b48e75 100644 --- a/lib/Frontend/CompilerInvocation.cpp +++ b/lib/Frontend/CompilerInvocation.cpp @@ -249,6 +249,8 @@ static void CodeGenOptsToArgs(const CodeGenOptions &Opts, ToArgsList &Res) { Res.push_back("-mconstructor-aliases"); if (Opts.ObjCAutoRefCountExceptions) Res.push_back("-fobjc-arc-eh"); + if (Opts.ObjCTrace) + Res.push_back("-fobjc-trace"); if (!Opts.DebugPass.empty()) { Res.push_back("-mdebug-pass", Opts.DebugPass); } @@ -1109,6 +1111,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); + Opts.ObjCTrace = Args.hasArg(OPT_fobjc_trace); Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc); Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate); Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); |