[clang] a828cda - Revert "[PGO] Exposing PGO's Counter Reset and File Dumping APIs (#76471)"
Vitaly Buka via cfe-commits
cfe-commits at lists.llvm.org
Tue Jan 9 18:53:26 PST 2024
Author: Vitaly Buka
Date: 2024-01-09T18:37:04-08:00
New Revision: a828cda9c80282a77b579f8fc9dc17a310173af4
URL: https://github.com/llvm/llvm-project/commit/a828cda9c80282a77b579f8fc9dc17a310173af4
DIFF: https://github.com/llvm/llvm-project/commit/a828cda9c80282a77b579f8fc9dc17a310173af4.diff
LOG: Revert "[PGO] Exposing PGO's Counter Reset and File Dumping APIs (#76471)"
Issue #77546
This reverts commit 07c9189fcc063bdf6219d2733843c89cde3991e1.
Added:
Modified:
clang-tools-extra/clang-tidy/ExpandModularHeadersPPCallbacks.cpp
clang/docs/UsersManual.rst
clang/include/clang/Basic/CodeGenOptions.h
clang/include/clang/Frontend/Utils.h
clang/lib/Frontend/CompilerInstance.cpp
clang/lib/Frontend/InitPreprocessor.cpp
clang/test/Profile/c-general.c
compiler-rt/include/CMakeLists.txt
compiler-rt/lib/profile/InstrProfiling.h
Removed:
compiler-rt/include/profile/instr_prof_interface.h
compiler-rt/test/profile/Linux/instrprof-weak-symbol.c
compiler-rt/test/profile/instrprof-api.c
################################################################################
diff --git a/clang-tools-extra/clang-tidy/ExpandModularHeadersPPCallbacks.cpp b/clang-tools-extra/clang-tidy/ExpandModularHeadersPPCallbacks.cpp
index 5ecd4fb19131e43..e414ac8c770508f 100644
--- a/clang-tools-extra/clang-tidy/ExpandModularHeadersPPCallbacks.cpp
+++ b/clang-tools-extra/clang-tidy/ExpandModularHeadersPPCallbacks.cpp
@@ -100,7 +100,7 @@ ExpandModularHeadersPPCallbacks::ExpandModularHeadersPPCallbacks(
/*OwnsHeaderSearch=*/false);
PP->Initialize(Compiler.getTarget(), Compiler.getAuxTarget());
InitializePreprocessor(*PP, *PO, Compiler.getPCHContainerReader(),
- Compiler.getFrontendOpts(), Compiler.getCodeGenOpts());
+ Compiler.getFrontendOpts());
ApplyHeaderSearchOptions(*HeaderInfo, *HSO, LangOpts,
Compiler.getTarget().getTriple());
}
diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst
index 27c629a1ffc6576..7c30570437e8b01 100644
--- a/clang/docs/UsersManual.rst
+++ b/clang/docs/UsersManual.rst
@@ -2809,110 +2809,6 @@ indexed format, regardeless whether it is produced by frontend or the IR pass.
overhead. ``prefer-atomic`` will be transformed to ``atomic`` when supported
by the target, or ``single`` otherwise.
-Fine Tuning Profile Collection
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The PGO infrastructure provides user program knobs to fine tune profile
-collection. Specifically, the PGO runtime provides the following functions
-that can be used to control the regions in the program where profiles should
-be collected.
-
- * ``void __llvm_profile_set_filename(const char *Name)``: changes the name of
- the profile file to ``Name``.
- * ``void __llvm_profile_reset_counters(void)``: resets all counters to zero.
- * ``int __llvm_profile_dump(void)``: write the profile data to disk.
- * ``int __llvm_orderfile_dump(void)``: write the order file to disk.
-
-For example, the following pattern can be used to skip profiling program
-initialization, profile two specific hot regions, and skip profiling program
-cleanup:
-
-.. code-block:: c
-
- int main() {
- initialize();
-
- // Reset all profile counters to 0 to omit profile collected during
- // initialize()'s execution.
- __llvm_profile_reset_counters();
- ... hot region 1
- // Dump the profile for hot region 1.
- __llvm_profile_set_filename("region1.profraw");
- __llvm_profile_dump();
-
- // Reset counters before proceeding to hot region 2.
- __llvm_profile_reset_counters();
- ... hot region 2
- // Dump the profile for hot region 2.
- __llvm_profile_set_filename("region2.profraw");
- __llvm_profile_dump();
-
- // Since the profile has been dumped, no further profile data
- // will be collected beyond the above __llvm_profile_dump().
- cleanup();
- return 0;
- }
-
-These APIs' names can be introduced to user programs in two ways.
-They can be declared as weak symbols on platforms which support
-treating weak symbols as ``null`` during linking. For example, the user can
-have
-
-.. code-block:: c
-
- __attribute__((weak)) int __llvm_profile_dump(void);
-
- // Then later in the same source file
- if (__llvm_profile_dump)
- if (__llvm_profile_dump() != 0) { ... }
- // The first if condition tests if the symbol is actually defined.
- // Profile dumping only happens if the symbol is defined. Hence,
- // the user program works correctly during normal (not profile-generate)
- // executions.
-
-Alternatively, the user program can include the header
-``profile/instr_prof_interface.h``, which contains the API names. For example,
-
-.. code-block:: c
-
- #include "profile/instr_prof_interface.h"
-
- // Then later in the same source file
- if (__llvm_profile_dump() != 0) { ... }
-
-The user code does not need to check if the API names are defined, because
-these names are automatically replaced by ``(0)`` or the equivalence of noop
-if the ``clang`` is not compiling for profile generation.
-
-Such replacement can happen because ``clang`` adds one of two macros depending
-on the ``-fprofile-generate`` and the ``-fprofile-use`` flags.
-
- * ``__LLVM_INSTR_PROFILE_GENERATE``: defined when one of
- ``-fprofile[-instr]-generate``/``-fcs-profile-generate`` is in effect.
- * ``__LLVM_INSTR_PROFILE_USE``: defined when one of
- ``-fprofile-use``/``-fprofile-instr-use`` is in effect.
-
-The two macros can be used to provide more flexibiilty so a user program
-can execute code specifically intended for profile generate or profile use.
-For example, a user program can have special logging during profile generate:
-
-.. code-block:: c
-
- #if __LLVM_INSTR_PROFILE_GENERATE
- expensive_logging_of_full_program_state();
- #endif
-
-The logging is automatically excluded during a normal build of the program,
-hence it does not impact performance during a normal execution.
-
-It is advised to use such fine tuning only in a program's cold regions. The weak
-symbols can introduce extra control flow (the ``if`` checks), while the macros
-(hence declarations they guard in ``profile/instr_prof_interface.h``)
-can change the control flow of the functions that use them between profile
-generation and profile use (which can lead to discarded counters in such
-functions). Using these APIs in the program's cold regions introduces less
-overhead and leads to more optimized code.
-
Disabling Instrumentation
^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/clang/include/clang/Basic/CodeGenOptions.h b/clang/include/clang/Basic/CodeGenOptions.h
index e06f1094784caf2..6952b48e898a819 100644
--- a/clang/include/clang/Basic/CodeGenOptions.h
+++ b/clang/include/clang/Basic/CodeGenOptions.h
@@ -494,12 +494,6 @@ class CodeGenOptions : public CodeGenOptionsBase {
return getProfileInstr() == ProfileCSIRInstr;
}
- /// Check if any form of instrumentation is on.
- bool hasProfileInstr() const {
- return hasProfileClangInstr() || hasProfileIRInstr() ||
- hasProfileCSIRInstr();
- }
-
/// Check if Clang profile use is on.
bool hasProfileClangUse() const {
return getProfileUse() == ProfileClangInstr;
diff --git a/clang/include/clang/Frontend/Utils.h b/clang/include/clang/Frontend/Utils.h
index 604e42067a3f1e8..143cf4359f00b50 100644
--- a/clang/include/clang/Frontend/Utils.h
+++ b/clang/include/clang/Frontend/Utils.h
@@ -43,14 +43,12 @@ class PCHContainerReader;
class Preprocessor;
class PreprocessorOptions;
class PreprocessorOutputOptions;
-class CodeGenOptions;
/// InitializePreprocessor - Initialize the preprocessor getting it and the
/// environment ready to process a single file.
void InitializePreprocessor(Preprocessor &PP, const PreprocessorOptions &PPOpts,
const PCHContainerReader &PCHContainerRdr,
- const FrontendOptions &FEOpts,
- const CodeGenOptions &CodeGenOpts);
+ const FrontendOptions &FEOpts);
/// DoPrintPreprocessedInput - Implement -E mode.
void DoPrintPreprocessedInput(Preprocessor &PP, raw_ostream *OS,
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index ea44a26b6db7da4..56bbef9697b6500 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -470,7 +470,7 @@ void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) {
// Predefine macros and configure the preprocessor.
InitializePreprocessor(*PP, PPOpts, getPCHContainerReader(),
- getFrontendOpts(), getCodeGenOpts());
+ getFrontendOpts());
// Initialize the header search object. In CUDA compilations, we use the aux
// triple (the host triple) to initialize our header search, since we need to
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index fe0fd3614113c45..d83128adb511ef4 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -1364,22 +1364,12 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
TI.getTargetDefines(LangOpts, Builder);
}
-static void InitializePGOProfileMacros(const CodeGenOptions &CodeGenOpts,
- MacroBuilder &Builder) {
- if (CodeGenOpts.hasProfileInstr())
- Builder.defineMacro("__LLVM_INSTR_PROFILE_GENERATE");
-
- if (CodeGenOpts.hasProfileIRUse() || CodeGenOpts.hasProfileClangUse())
- Builder.defineMacro("__LLVM_INSTR_PROFILE_USE");
-}
-
/// InitializePreprocessor - Initialize the preprocessor getting it and the
/// environment ready to process a single file.
-void clang::InitializePreprocessor(Preprocessor &PP,
- const PreprocessorOptions &InitOpts,
- const PCHContainerReader &PCHContainerRdr,
- const FrontendOptions &FEOpts,
- const CodeGenOptions &CodeGenOpts) {
+void clang::InitializePreprocessor(
+ Preprocessor &PP, const PreprocessorOptions &InitOpts,
+ const PCHContainerReader &PCHContainerRdr,
+ const FrontendOptions &FEOpts) {
const LangOptions &LangOpts = PP.getLangOpts();
std::string PredefineBuffer;
PredefineBuffer.reserve(4080);
@@ -1426,11 +1416,6 @@ void clang::InitializePreprocessor(Preprocessor &PP,
InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
FEOpts, Builder);
- // The PGO instrumentation profile macros are driven by options
- // -fprofile[-instr]-generate/-fcs-profile-generate/-fprofile[-instr]-use,
- // hence they are not guarded by InitOpts.UsePredefines.
- InitializePGOProfileMacros(CodeGenOpts, Builder);
-
// Add on the predefines from the driver. Wrap in a #line directive to report
// that they come from the command line.
Builder.append("# 1 \"<command line>\" 1");
diff --git a/clang/test/Profile/c-general.c b/clang/test/Profile/c-general.c
index 2f621ec9b0bf9db..b841f9c3d2a1d1e 100644
--- a/clang/test/Profile/c-general.c
+++ b/clang/test/Profile/c-general.c
@@ -9,16 +9,6 @@
// Also check compatibility with older profiles.
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-general.c %s -o - -emit-llvm -fprofile-instrument-use-path=%S/Inputs/c-general.profdata.v1 | FileCheck -allow-deprecated-dag-overlap -check-prefix=PGOUSE %s
-// RUN: %clang -fprofile-generate -E -dM %s | FileCheck -match-full-lines -check-prefix=PROFGENMACRO %s
-// RUN: %clang -fprofile-instr-generate -E -dM %s | FileCheck -match-full-lines -check-prefix=PROFGENMACRO %s
-// RUN: %clang -fcs-profile-generate -E -dM %s | FileCheck -match-full-lines -check-prefix=PROFGENMACRO %s
-//
-// RUN: %clang -fprofile-use=%t.profdata -E -dM %s | FileCheck -match-full-lines -check-prefix=PROFUSEMACRO %s
-// RUN: %clang -fprofile-instr-use=%t.profdata -E -dM %s | FileCheck -match-full-lines -check-prefix=PROFUSEMACRO %s
-
-// PROFGENMACRO:#define __LLVM_INSTR_PROFILE_GENERATE 1
-// PROFUSEMACRO:#define __LLVM_INSTR_PROFILE_USE 1
-
// PGOGEN: @[[SLC:__profc_simple_loops]] = private global [4 x i64] zeroinitializer
// PGOGEN: @[[IFC:__profc_conditionals]] = private global [13 x i64] zeroinitializer
// PGOGEN: @[[EEC:__profc_early_exits]] = private global [9 x i64] zeroinitializer
diff --git a/compiler-rt/include/CMakeLists.txt b/compiler-rt/include/CMakeLists.txt
index 7a100c66bbcfda8..78427beedb3cc4e 100644
--- a/compiler-rt/include/CMakeLists.txt
+++ b/compiler-rt/include/CMakeLists.txt
@@ -44,7 +44,6 @@ endif(COMPILER_RT_BUILD_ORC)
if (COMPILER_RT_BUILD_PROFILE)
set(PROFILE_HEADERS
profile/InstrProfData.inc
- profile/instr_prof_interface.h
)
endif(COMPILER_RT_BUILD_PROFILE)
diff --git a/compiler-rt/include/profile/instr_prof_interface.h b/compiler-rt/include/profile/instr_prof_interface.h
deleted file mode 100644
index be40f2685934bea..000000000000000
--- a/compiler-rt/include/profile/instr_prof_interface.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*===---- instr_prof_interface.h - Instrumentation PGO User Program API ----===
- *
- * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
- * See https://llvm.org/LICENSE.txt for license information.
- * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- *
- *===-----------------------------------------------------------------------===
- *
- * This header provides a public interface for fine-grained control of counter
- * reset and profile dumping. These interface functions can be directly called
- * in user programs.
- *
-\*===---------------------------------------------------------------------===*/
-
-#ifndef COMPILER_RT_INSTR_PROFILING
-#define COMPILER_RT_INSTR_PROFILING
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef __LLVM_INSTR_PROFILE_GENERATE
-// Profile file reset and dump interfaces.
-// When `-fprofile[-instr]-generate`/`-fcs-profile-generate` is in effect,
-// clang defines __LLVM_INSTR_PROFILE_GENERATE to pick up the API calls.
-
-/*!
- * \brief Set the filename for writing instrumentation data.
- *
- * Sets the filename to be used for subsequent calls to
- * \a __llvm_profile_write_file().
- *
- * \c Name is not copied, so it must remain valid. Passing NULL resets the
- * filename logic to the default behaviour.
- *
- * Note: There may be multiple copies of the profile runtime (one for each
- * instrumented image/DSO). This API only modifies the filename within the
- * copy of the runtime available to the calling image.
- *
- * Warning: This is a no-op if continuous mode (\ref
- * __llvm_profile_is_continuous_mode_enabled) is on. The reason for this is
- * that in continuous mode, profile counters are mmap()'d to the profile at
- * program initialization time. Support for transferring the mmap'd profile
- * counts to a new file has not been implemented.
- */
-void __llvm_profile_set_filename(const char *Name);
-
-/*!
- * \brief Interface to set all PGO counters to zero for the current process.
- *
- */
-void __llvm_profile_reset_counters(void);
-
-/*!
- * \brief this is a wrapper interface to \c __llvm_profile_write_file.
- * After this interface is invoked, an already dumped flag will be set
- * so that profile won't be dumped again during program exit.
- * Invocation of interface __llvm_profile_reset_counters will clear
- * the flag. This interface is designed to be used to collect profile
- * data from user selected hot regions. The use model is
- * __llvm_profile_reset_counters();
- * ... hot region 1
- * __llvm_profile_dump();
- * .. some other code
- * __llvm_profile_reset_counters();
- * ... hot region 2
- * __llvm_profile_dump();
- *
- * It is expected that on-line profile merging is on with \c %m specifier
- * used in profile filename . If merging is not turned on, user is expected
- * to invoke __llvm_profile_set_filename to specify
diff erent profile names
- * for
diff erent regions before dumping to avoid profile write clobbering.
- */
-int __llvm_profile_dump(void);
-
-// Interface to dump the current process' order file to disk.
-int __llvm_orderfile_dump(void);
-
-#else
-
-#define __llvm_profile_set_filename(Name)
-#define __llvm_profile_reset_counters()
-#define __llvm_profile_dump() (0)
-#define __llvm_orderfile_dump() (0)
-
-#endif
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif
diff --git a/compiler-rt/lib/profile/InstrProfiling.h b/compiler-rt/lib/profile/InstrProfiling.h
index 012390833691877..137115996748ce3 100644
--- a/compiler-rt/lib/profile/InstrProfiling.h
+++ b/compiler-rt/lib/profile/InstrProfiling.h
@@ -12,17 +12,6 @@
#include "InstrProfilingPort.h"
#include <stdio.h>
-// Make sure __LLVM_INSTR_PROFILE_GENERATE is always defined before
-// including instr_prof_interface.h so the interface functions are
-// declared correctly for the runtime.
-// __LLVM_INSTR_PROFILE_GENERATE is always `#undef`ed after the header,
-// because compiler-rt does not support profiling the profiling runtime itself.
-#ifndef __LLVM_INSTR_PROFILE_GENERATE
-#define __LLVM_INSTR_PROFILE_GENERATE
-#endif
-#include "profile/instr_prof_interface.h"
-#undef __LLVM_INSTR_PROFILE_GENERATE
-
#define INSTR_PROF_VISIBILITY COMPILER_RT_VISIBILITY
#include "profile/InstrProfData.inc"
@@ -111,6 +100,12 @@ ValueProfNode *__llvm_profile_begin_vnodes();
ValueProfNode *__llvm_profile_end_vnodes();
uint32_t *__llvm_profile_begin_orderfile();
+/*!
+ * \brief Clear profile counters to zero.
+ *
+ */
+void __llvm_profile_reset_counters(void);
+
/*!
* \brief Merge profile data from buffer.
*
@@ -161,6 +156,50 @@ void __llvm_profile_instrument_target_value(uint64_t TargetValue, void *Data,
int __llvm_profile_write_file(void);
int __llvm_orderfile_write_file(void);
+/*!
+ * \brief this is a wrapper interface to \c __llvm_profile_write_file.
+ * After this interface is invoked, an already dumped flag will be set
+ * so that profile won't be dumped again during program exit.
+ * Invocation of interface __llvm_profile_reset_counters will clear
+ * the flag. This interface is designed to be used to collect profile
+ * data from user selected hot regions. The use model is
+ * __llvm_profile_reset_counters();
+ * ... hot region 1
+ * __llvm_profile_dump();
+ * .. some other code
+ * __llvm_profile_reset_counters();
+ * ... hot region 2
+ * __llvm_profile_dump();
+ *
+ * It is expected that on-line profile merging is on with \c %m specifier
+ * used in profile filename . If merging is not turned on, user is expected
+ * to invoke __llvm_profile_set_filename to specify
diff erent profile names
+ * for
diff erent regions before dumping to avoid profile write clobbering.
+ */
+int __llvm_profile_dump(void);
+
+int __llvm_orderfile_dump(void);
+
+/*!
+ * \brief Set the filename for writing instrumentation data.
+ *
+ * Sets the filename to be used for subsequent calls to
+ * \a __llvm_profile_write_file().
+ *
+ * \c Name is not copied, so it must remain valid. Passing NULL resets the
+ * filename logic to the default behaviour.
+ *
+ * Note: There may be multiple copies of the profile runtime (one for each
+ * instrumented image/DSO). This API only modifies the filename within the
+ * copy of the runtime available to the calling image.
+ *
+ * Warning: This is a no-op if continuous mode (\ref
+ * __llvm_profile_is_continuous_mode_enabled) is on. The reason for this is
+ * that in continuous mode, profile counters are mmap()'d to the profile at
+ * program initialization time. Support for transferring the mmap'd profile
+ * counts to a new file has not been implemented.
+ */
+void __llvm_profile_set_filename(const char *Name);
/*!
* \brief Set the FILE object for writing instrumentation data. Return 0 if set
diff --git a/compiler-rt/test/profile/Linux/instrprof-weak-symbol.c b/compiler-rt/test/profile/Linux/instrprof-weak-symbol.c
deleted file mode 100644
index eda299cb6610e41..000000000000000
--- a/compiler-rt/test/profile/Linux/instrprof-weak-symbol.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// Test the linker feature that treats undefined weak symbols as null values.
-
-// RUN: %clang_pgogen -o %t %s
-// RUN: not %t
-// RUN: %clang -o %t %s
-// RUN: %t
-
-__attribute__((weak)) void __llvm_profile_reset_counters(void);
-
-int main() {
- if (__llvm_profile_reset_counters) {
- __llvm_profile_reset_counters();
- return 1;
- }
- return 0;
-}
diff --git a/compiler-rt/test/profile/instrprof-api.c b/compiler-rt/test/profile/instrprof-api.c
deleted file mode 100644
index 1381300c1ad18a5..000000000000000
--- a/compiler-rt/test/profile/instrprof-api.c
+++ /dev/null
@@ -1,46 +0,0 @@
-// Testing profile generate.
-// RUN: %clang_profgen %s -S -emit-llvm -o - | FileCheck %s --check-prefix=PROFGEN
-// RUN: %clang_pgogen %s -S -emit-llvm -o - | FileCheck %s --check-prefix=PROFGEN
-
-// Testing profile use. Generate some profile file first.
-// RUN: rm -rf rawprof.profraw
-// RUN: %clang_profgen -o %t1 %s
-// RUN: %run %t1
-// RUN: llvm-profdata merge -o %t1.profdata rawprof.profraw
-// RUN: %clang_profuse=%t1.profdata %s -S -emit-llvm -o - | FileCheck %s --check-prefix=PROFUSE
-// RUN: rm -rf rawprof.profraw
-// RUN: %clang_pgogen -o %t2 %s
-// RUN: %run %t2
-// RUN: llvm-profdata merge -o %t2.profdata rawprof.profraw
-// RUN: %clang_pgouse=%t2.profdata %s -S -emit-llvm -o - | FileCheck %s --check-prefix=PROFUSE
-#include "profile/instr_prof_interface.h"
-
-__attribute__((noinline)) int bar() { return 4; }
-
-int foo() {
- __llvm_profile_reset_counters();
- // PROFGEN: call void @__llvm_profile_reset_counters()
- // PROFUSE-NOT: call void @__llvm_profile_reset_counters()
- return bar();
-}
-
-// PROFUSE-NOT: declare void @__llvm_profile_reset_counters()
-
-int main() {
- int z = foo() + 3;
- __llvm_profile_set_filename("rawprof.profraw");
- // PROFGEN: call void @__llvm_profile_set_filename(ptr noundef @.str)
- // PROFUSE-NOT: call void @__llvm_profile_set_filename(ptr noundef @.str)
- if (__llvm_profile_dump())
- return 2;
- // PROFGEN: %call1 = call {{(signext )*}}i32 @__llvm_profile_dump()
- // PROFUSE-NOT: %call1 = call {{(signext )*}}i32 @__llvm_profile_dump()
- __llvm_orderfile_dump();
- // PROFGEN: %call2 = call {{(signext )*}}i32 @__llvm_orderfile_dump()
- // PROFUSE-NOT: %call2 = call {{(signext )*}}i32 @__llvm_orderfile_dump()
- return z + bar() - 11;
-}
-
-// PROFUSE-NOT: declare void @__llvm_profile_set_filename(ptr noundef)
-// PROFUSE-NOT: declare signext i32 @__llvm_profile_dump()
-// PROFUSE-NOT: declare signext i32 @__llvm_orderfile_dump()
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