[XRay] Add clang builtin for xray typed events.
Summary:
A clang builtin for xray typed events. Differs from
__xray_customevent(...) by the presence of a type tag that is vended by
compiler-rt in typical usage. This allows xray handlers to expand logged
events with their type description and plugins to process traced events
based on type.
This change depends on D45633 for the intrinsic definition.
Reviewers: dberris, pelikan, rnk, eizan
Subscribers: cfe-commits, llvm-commits
Differential Revision: https://reviews.llvm.org/D45716
llvm-svn: 330220
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index dd245dd..fffc242 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -3372,6 +3372,44 @@
return RValue::get(Builder.CreateCall(F, {Arg0Val, Arg1}));
}
+ case Builtin::BI__xray_typedevent: {
+ // TODO: There should be a way to always emit events even if the current
+ // function is not instrumented. Losing events in a stream can cripple
+ // a trace.
+ if (!ShouldXRayInstrumentFunction())
+ return RValue::getIgnored();
+
+ if (!CGM.getCodeGenOpts().XRayInstrumentationBundle.has(
+ XRayInstrKind::Typed))
+ return RValue::getIgnored();
+
+ if (const auto *XRayAttr = CurFuncDecl->getAttr<XRayInstrumentAttr>())
+ if (XRayAttr->neverXRayInstrument() && !AlwaysEmitXRayTypedEvents())
+ return RValue::getIgnored();
+
+ Function *F = CGM.getIntrinsic(Intrinsic::xray_typedevent);
+ auto FTy = F->getFunctionType();
+ auto Arg0 = EmitScalarExpr(E->getArg(0));
+ auto PTy0 = FTy->getParamType(0);
+ if (PTy0 != Arg0->getType())
+ Arg0 = Builder.CreateTruncOrBitCast(Arg0, PTy0);
+ auto Arg1 = E->getArg(1);
+ auto Arg1Val = EmitScalarExpr(Arg1);
+ auto Arg1Ty = Arg1->getType();
+ auto PTy1 = FTy->getParamType(1);
+ if (PTy1 != Arg1Val->getType()) {
+ if (Arg1Ty->isArrayType())
+ Arg1Val = EmitArrayToPointerDecay(Arg1).getPointer();
+ else
+ Arg1Val = Builder.CreatePointerCast(Arg1Val, PTy1);
+ }
+ auto Arg2 = EmitScalarExpr(E->getArg(2));
+ auto PTy2 = FTy->getParamType(2);
+ if (PTy2 != Arg2->getType())
+ Arg2 = Builder.CreateTruncOrBitCast(Arg2, PTy2);
+ return RValue::get(Builder.CreateCall(F, {Arg0, Arg1Val, Arg2}));
+ }
+
case Builtin::BI__builtin_ms_va_start:
case Builtin::BI__builtin_ms_va_end:
return RValue::get(