r330220 - [XRay] Add clang builtin for xray typed events.
Keith Wyss via cfe-commits
cfe-commits at lists.llvm.org
Tue Apr 17 14:32:43 PDT 2018
Author: kpw
Date: Tue Apr 17 14:32:43 2018
New Revision: 330220
URL: http://llvm.org/viewvc/llvm-project?rev=330220&view=rev
Log:
[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
Added:
cfe/trunk/test/CodeGen/xray-always-emit-typedevent.cpp
cfe/trunk/test/CodeGen/xray-typedevent.cpp
Modified:
cfe/trunk/include/clang/Basic/Builtins.def
cfe/trunk/include/clang/Basic/LangOptions.def
cfe/trunk/include/clang/Basic/XRayInstr.h
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/include/clang/Driver/XRayArgs.h
cfe/trunk/include/clang/Frontend/CodeGenOptions.def
cfe/trunk/lib/Basic/XRayInstr.cpp
cfe/trunk/lib/CodeGen/CGBuiltin.cpp
cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
cfe/trunk/lib/CodeGen/CodeGenFunction.h
cfe/trunk/lib/Driver/XRayArgs.cpp
cfe/trunk/lib/Frontend/CompilerInvocation.cpp
cfe/trunk/test/CodeGen/xray-instrumentation-bundles.cpp
Modified: cfe/trunk/include/clang/Basic/Builtins.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/Builtins.def?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/Builtins.def (original)
+++ cfe/trunk/include/clang/Basic/Builtins.def Tue Apr 17 14:32:43 2018
@@ -1455,6 +1455,7 @@ LANGBUILTIN(omp_is_initial_device, "i",
// Builtins for XRay
BUILTIN(__xray_customevent, "vcC*z", "")
+BUILTIN(__xray_typedevent, "vzcC*z", "")
// Win64-compatible va_list functions
BUILTIN(__builtin_ms_va_start, "vc*&.", "nt")
Modified: cfe/trunk/include/clang/Basic/LangOptions.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/LangOptions.def?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/LangOptions.def (original)
+++ cfe/trunk/include/clang/Basic/LangOptions.def Tue Apr 17 14:32:43 2018
@@ -281,6 +281,9 @@ LANGOPT(XRayInstrument, 1, 0, "controls
LANGOPT(XRayAlwaysEmitCustomEvents, 1, 0,
"controls whether to always emit intrinsic calls to "
"__xray_customevent(...) builtin.")
+LANGOPT(XRayAlwaysEmitTypedEvents, 1, 0,
+ "controls whether to always emit intrinsic calls to "
+ "__xray_typedevent(...) builtin.")
BENIGN_LANGOPT(AllowEditorPlaceholders, 1, 0,
"allow editor placeholders in source")
@@ -298,4 +301,3 @@ ENUM_LANGOPT(ClangABICompat, ClangABI, 4
#undef VALUE_LANGOPT
#undef COMPATIBLE_VALUE_LANGOPT
#undef BENIGN_VALUE_LANGOPT
-
Modified: cfe/trunk/include/clang/Basic/XRayInstr.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/XRayInstr.h?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/XRayInstr.h (original)
+++ cfe/trunk/include/clang/Basic/XRayInstr.h Tue Apr 17 14:32:43 2018
@@ -31,13 +31,15 @@ namespace XRayInstrKind {
enum XRayInstrOrdinal : XRayInstrMask {
XRIO_Function,
XRIO_Custom,
+ XRIO_Typed,
XRIO_Count
};
constexpr XRayInstrMask None = 0;
constexpr XRayInstrMask Function = 1U << XRIO_Function;
constexpr XRayInstrMask Custom = 1U << XRIO_Custom;
-constexpr XRayInstrMask All = Function | Custom;
+constexpr XRayInstrMask Typed = 1U << XRIO_Typed;
+constexpr XRayInstrMask All = Function | Custom | Typed;
} // namespace XRayInstrKind
Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Tue Apr 17 14:32:43 2018
@@ -1119,6 +1119,12 @@ def fxray_always_emit_customevents : Fla
def fnoxray_always_emit_customevents : Flag<["-"], "fno-xray-always-emit-customevents">, Group<f_Group>,
Flags<[CC1Option]>;
+def fxray_always_emit_typedevents : Flag<["-"], "fxray-always-emit-typedevents">, Group<f_Group>,
+ Flags<[CC1Option]>,
+ HelpText<"Determine whether to always emit __xray_typedevent(...) calls even if the function it appears in is not always instrumented.">;
+def fnoxray_always_emit_typedevents : Flag<["-"], "fno-xray-always-emit-typedevents">, Group<f_Group>,
+ Flags<[CC1Option]>;
+
def fxray_link_deps : Flag<["-"], "fxray-link-deps">, Group<f_Group>,
Flags<[CC1Option]>,
HelpText<"Tells clang to add the link dependencies for XRay.">;
Modified: cfe/trunk/include/clang/Driver/XRayArgs.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/XRayArgs.h?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/XRayArgs.h (original)
+++ cfe/trunk/include/clang/Driver/XRayArgs.h Tue Apr 17 14:32:43 2018
@@ -29,6 +29,7 @@ class XRayArgs {
bool XRayInstrument = false;
int InstructionThreshold = 200;
bool XRayAlwaysEmitCustomEvents = false;
+ bool XRayAlwaysEmitTypedEvents = false;
bool XRayRT = true;
public:
Modified: cfe/trunk/include/clang/Frontend/CodeGenOptions.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/CodeGenOptions.def?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/include/clang/Frontend/CodeGenOptions.def (original)
+++ cfe/trunk/include/clang/Frontend/CodeGenOptions.def Tue Apr 17 14:32:43 2018
@@ -96,6 +96,9 @@ CODEGENOPT(StackSizeSection , 1, 0) ///
///< Set when -fxray-always-emit-customevents is enabled.
CODEGENOPT(XRayAlwaysEmitCustomEvents , 1, 0)
+///< Set when -fxray-always-emit-typedevents is enabled.
+CODEGENOPT(XRayAlwaysEmitTypedEvents , 1, 0)
+
///< Set the minimum number of instructions in a function to determine selective
///< XRay instrumentation.
VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200)
Modified: cfe/trunk/lib/Basic/XRayInstr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/XRayInstr.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/XRayInstr.cpp (original)
+++ cfe/trunk/lib/Basic/XRayInstr.cpp Tue Apr 17 14:32:43 2018
@@ -21,6 +21,7 @@ XRayInstrMask parseXRayInstrValue(String
.Case("all", XRayInstrKind::All)
.Case("custom", XRayInstrKind::Custom)
.Case("function", XRayInstrKind::Function)
+ .Case("typed", XRayInstrKind::Typed)
.Case("none", XRayInstrKind::None)
.Default(XRayInstrKind::None);
return ParsedKind;
Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Tue Apr 17 14:32:43 2018
@@ -3372,6 +3372,44 @@ RValue CodeGenFunction::EmitBuiltinExpr(
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(
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.cpp Tue Apr 17 14:32:43 2018
@@ -466,7 +466,7 @@ bool CodeGenFunction::ShouldXRayInstrume
}
/// AlwaysEmitXRayCustomEvents - Return true if we should emit IR for calls to
-/// the __xray_customevent(...) builin calls, when doing XRay instrumentation.
+/// the __xray_customevent(...) builtin calls, when doing XRay instrumentation.
bool CodeGenFunction::AlwaysEmitXRayCustomEvents() const {
return CGM.getCodeGenOpts().XRayInstrumentFunctions &&
(CGM.getCodeGenOpts().XRayAlwaysEmitCustomEvents ||
@@ -474,6 +474,13 @@ bool CodeGenFunction::AlwaysEmitXRayCust
XRayInstrKind::Custom);
}
+bool CodeGenFunction::AlwaysEmitXRayTypedEvents() const {
+ return CGM.getCodeGenOpts().XRayInstrumentFunctions &&
+ (CGM.getCodeGenOpts().XRayAlwaysEmitTypedEvents ||
+ CGM.getCodeGenOpts().XRayInstrumentationBundle.Mask ==
+ XRayInstrKind::Typed);
+}
+
llvm::Constant *
CodeGenFunction::EncodeAddrForUseInPrologue(llvm::Function *F,
llvm::Constant *Addr) {
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Tue Apr 17 14:32:43 2018
@@ -1804,6 +1804,10 @@ public:
/// XRay custom event handling calls.
bool AlwaysEmitXRayCustomEvents() const;
+ /// AlwaysEmitXRayTypedEvents - Return true if clang must unconditionally emit
+ /// XRay typed event handling calls.
+ bool AlwaysEmitXRayTypedEvents() const;
+
/// Encode an address into a form suitable for use in a function prologue.
llvm::Constant *EncodeAddrForUseInPrologue(llvm::Function *F,
llvm::Constant *Addr);
Modified: cfe/trunk/lib/Driver/XRayArgs.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/XRayArgs.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/XRayArgs.cpp (original)
+++ cfe/trunk/lib/Driver/XRayArgs.cpp Tue Apr 17 14:32:43 2018
@@ -77,6 +77,10 @@ XRayArgs::XRayArgs(const ToolChain &TC,
options::OPT_fnoxray_always_emit_customevents, false))
XRayAlwaysEmitCustomEvents = true;
+ if (Args.hasFlag(options::OPT_fxray_always_emit_typedevents,
+ options::OPT_fnoxray_always_emit_typedevents, false))
+ XRayAlwaysEmitTypedEvents = true;
+
if (!Args.hasFlag(options::OPT_fxray_link_deps,
options::OPT_fnoxray_link_deps, true))
XRayRT = false;
@@ -174,6 +178,9 @@ void XRayArgs::addArgs(const ToolChain &
if (XRayAlwaysEmitCustomEvents)
CmdArgs.push_back("-fxray-always-emit-customevents");
+ if (XRayAlwaysEmitTypedEvents)
+ CmdArgs.push_back("-fxray-always-emit-typedevents");
+
CmdArgs.push_back(Args.MakeArgString(Twine(XRayInstructionThresholdOption) +
Twine(InstructionThreshold)));
Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Tue Apr 17 14:32:43 2018
@@ -854,6 +854,8 @@ static bool ParseCodeGenArgs(CodeGenOpti
Args.hasArg(OPT_fxray_instrument);
Opts.XRayAlwaysEmitCustomEvents =
Args.hasArg(OPT_fxray_always_emit_customevents);
+ Opts.XRayAlwaysEmitTypedEvents =
+ Args.hasArg(OPT_fxray_always_emit_typedevents);
Opts.XRayInstructionThreshold =
getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
@@ -2678,6 +2680,11 @@ static void ParseLangArgs(LangOptions &O
Args.hasFlag(OPT_fxray_always_emit_customevents,
OPT_fnoxray_always_emit_customevents, false);
+ // -fxray-always-emit-typedevents
+ Opts.XRayAlwaysEmitTypedEvents =
+ Args.hasFlag(OPT_fxray_always_emit_typedevents,
+ OPT_fnoxray_always_emit_customevents, false);
+
// -fxray-{always,never}-instrument= filenames.
Opts.XRayAlwaysInstrumentFiles =
Args.getAllArgValues(OPT_fxray_always_instrument);
Added: cfe/trunk/test/CodeGen/xray-always-emit-typedevent.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/xray-always-emit-typedevent.cpp?rev=330220&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/xray-always-emit-typedevent.cpp (added)
+++ cfe/trunk/test/CodeGen/xray-always-emit-typedevent.cpp Tue Apr 17 14:32:43 2018
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -fxray-instrument -fxray-always-emit-typedevents -x c++ \
+// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
+// RUN: | FileCheck %s
+
+// CHECK-LABEL: @_Z15neverInstrumentv
+[[clang::xray_never_instrument]] void neverInstrument() {
+ static constexpr char kPhase[] = "never";
+ __xray_typedevent(1, kPhase, 5);
+ // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 5)
+}
Modified: cfe/trunk/test/CodeGen/xray-instrumentation-bundles.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/xray-instrumentation-bundles.cpp?rev=330220&r1=330219&r2=330220&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/xray-instrumentation-bundles.cpp (original)
+++ cfe/trunk/test/CodeGen/xray-instrumentation-bundles.cpp Tue Apr 17 14:32:43 2018
@@ -1,30 +1,49 @@
// RUN: %clang_cc1 -fxray-instrument -fxray-instrumentation-bundle=none -x c++ \
// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
-// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,NOCUSTOM %s
-// RUN: %clang_cc1 -fxray-instrument \
-// RUN: -fxray-instrumentation-bundle=function -x c++ \
+// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,NOCUSTOM,NOTYPED %s
+// RUN: %clang_cc1 -fxray-instrument -fxray-instrumentation-bundle=function -x c++ \
// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
-// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,NOCUSTOM %s
+// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,NOCUSTOM,NOTYPED %s
// RUN: %clang_cc1 -fxray-instrument \
// RUN: -fxray-instrumentation-bundle=custom -x c++ \
// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
-// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,CUSTOM %s
+// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,CUSTOM,NOTYPED %s
+// RUN: %clang_cc1 -fxray-instrument \
+// RUN: -fxray-instrumentation-bundle=typed -x c++ \
+// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
+// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,NOCUSTOM,TYPED %s
+// RUN: %clang_cc1 -fxray-instrument \
+// RUN: -fxray-instrumentation-bundle=custom,typed -x c++ \
+// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
+// RUN: | FileCheck --check-prefixes CHECK,NOFUNCTION,CUSTOM,TYPED %s
// RUN: %clang_cc1 -fxray-instrument \
// RUN: -fxray-instrumentation-bundle=function,custom -x c++ \
// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
-// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,CUSTOM %s
+// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,CUSTOM,NOTYPED %s
+// RUN: %clang_cc1 -fxray-instrument \
+// RUN: -fxray-instrumentation-bundle=function,typed -x c++ \
+// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
+// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,NOCUSTOM,TYPED %s
+// RUN: %clang_cc1 -fxray-instrument \
+// RUN: -fxray-instrumentation-bundle=function,custom,typed -x c++ \
+// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
+// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,CUSTOM,TYPED %s
// RUN: %clang_cc1 -fxray-instrument \
// RUN: -fxray-instrumentation-bundle=function \
-// RUN: -fxray-instrumentation-bundle=custom -x c++ \
+// RUN: -fxray-instrumentation-bundle=custom \
+// RUN: -fxray-instrumentation-bundle=typed -x c++ \
// RUN: -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s \
-// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,CUSTOM %s
+// RUN: | FileCheck --check-prefixes CHECK,FUNCTION,CUSTOM,TYPED %s
// CHECK: define void @_Z16alwaysInstrumentv() #[[ALWAYSATTR:[0-9]+]] {
[[clang::xray_always_instrument]] void alwaysInstrument() {
static constexpr char kPhase[] = "always";
__xray_customevent(kPhase, 6);
+ __xray_typedevent(1, kPhase, 6);
// CUSTOM: call void @llvm.xray.customevent(i8*{{.*}}, i32 6)
// NOCUSTOM-NOT: call void @llvm.xray.customevent(i8*{{.*}}, i32 6)
+ // TYPED: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 6)
+ // NOTYPED-NOT: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 6)
}
// FUNCTION: attributes #[[ALWAYSATTR]] = {{.*}} "function-instrument"="xray-always" {{.*}}
Added: cfe/trunk/test/CodeGen/xray-typedevent.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/xray-typedevent.cpp?rev=330220&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/xray-typedevent.cpp (added)
+++ cfe/trunk/test/CodeGen/xray-typedevent.cpp Tue Apr 17 14:32:43 2018
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -fxray-instrument -x c++ -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// CHECK-LABEL: @_Z16alwaysInstrumentv
+[[clang::xray_always_instrument]] void alwaysInstrument() {
+ // Event types would normally come from calling __xray_register_event_type
+ // from compiler-rt
+ auto EventType = 1;
+ static constexpr char kPhase[] = "instrument";
+ __xray_typedevent(EventType, kPhase, 10);
+ // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 10)
+}
+
+// CHECK-LABEL: @_Z15neverInstrumentv
+[[clang::xray_never_instrument]] void neverInstrument() {
+ auto EventType = 2;
+ static constexpr char kPhase[] = "never";
+ __xray_typedevent(EventType, kPhase, 5);
+ // CHECK-NOT: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 5)
+}
+
+// CHECK-LABEL: @_Z21conditionalInstrumenti
+[[clang::xray_always_instrument]] void conditionalInstrument(int v) {
+ auto TrueEventType = 3;
+ auto UntrueEventType = 4;
+ static constexpr char kTrue[] = "true";
+ static constexpr char kUntrue[] = "untrue";
+ if (v % 2)
+ __xray_typedevent(TrueEventType, kTrue, 4);
+ else
+ __xray_typedevent(UntrueEventType, kUntrue, 6);
+
+ // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 4)
+ // CHECK: call void @llvm.xray.typedevent(i16 {{.*}}, i8*{{.*}}, i32 6)
+}
More information about the cfe-commits
mailing list