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[clang][NewPM] Move EntryExitInstrumenterPass to the start of the pipeline 

This fixes CodeGen/x86_64-instrument-functions.c when running under the new
pass manager. The pass should go before any other pass to prevent
`__cyg_profile_func_enter/exit()` from not being emitted by inlined functions.

Differential Revision: https://reviews.llvm.org/D63577

llvm-svn: 363969
This commit is contained in:
Leonard Chan 2019-06-20 19:35:25 +00:00
parent f2f7d72f00
commit b206513e45
2 changed files with 11 additions and 2 deletions
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6
clang/lib/CodeGen/BackendUtil.cpp
View File

@ -67,6 +67,7 @@
#include "llvm/Transforms/Scalar/GVN.h"
#include "llvm/Transforms/Utils.h"
#include "llvm/Transforms/Utils/CanonicalizeAliases.h"
#include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
#include "llvm/Transforms/Utils/NameAnonGlobals.h"
#include "llvm/Transforms/Utils/SymbolRewriter.h"
#include <memory>
@ -1131,6 +1132,11 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
// configure the pipeline.
PassBuilder::OptimizationLevel Level = mapToLevel(CodeGenOpts);
PB.registerPipelineStartEPCallback([](ModulePassManager &MPM) {
MPM.addPass(createModuleToFunctionPassAdaptor(
EntryExitInstrumenterPass(/*PostInlining=*/false)));
});
// Register callbacks to schedule sanitizer passes at the appropriate part of
// the pipeline.
// FIXME: either handle asan/the remaining sanitizers or error out

7
clang/test/CodeGen/x86_64-instrument-functions.c
View File

@ -1,6 +1,9 @@
// REQUIRES: x86-registered-target
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S -finstrument-functions -O2 -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S -finstrument-functions-after-inlining -O2 -o - %s | FileCheck -check-prefix=NOINLINE %s
// RUN: %clang_cc1 -fno-experimental-new-pass-manager -triple x86_64-unknown-unknown -S -finstrument-functions -O2 -o - %s | FileCheck %s
// RUN: %clang_cc1 -fno-experimental-new-pass-manager -triple x86_64-unknown-unknown -S -finstrument-functions-after-inlining -O2 -o - %s | FileCheck -check-prefix=NOINLINE %s
// RUN: %clang_cc1 -fexperimental-new-pass-manager -triple x86_64-unknown-unknown -S -finstrument-functions -O2 -o - %s | FileCheck %s
// RUN: %clang_cc1 -fexperimental-new-pass-manager -triple x86_64-unknown-unknown -S -finstrument-functions-after-inlining -O2 -o - %s | FileCheck -check-prefix=NOINLINE %s
// It's not so nice having asm tests in Clang, but we need to check that we set
// up the pipeline correctly in order to have the instrumentation inserted.