[clang] c332445 - [clang] Add -fprofile-prefix-map
Keith Smiley via cfe-commits
cfe-commits at lists.llvm.org
Mon Jan 25 10:14:30 PST 2021
Author: Keith Smiley
Date: 2021-01-25T10:14:04-08:00
New Revision: c3324450b204392169d4ec7172cb32f74c03e376
URL: https://github.com/llvm/llvm-project/commit/c3324450b204392169d4ec7172cb32f74c03e376
DIFF: https://github.com/llvm/llvm-project/commit/c3324450b204392169d4ec7172cb32f74c03e376.diff
LOG: [clang] Add -fprofile-prefix-map
This flag allows you to re-write absolute paths in coverage data analogous to -fdebug-prefix-map. This flag is also implied by -ffile-prefix-map.
Added:
clang/test/Profile/profile-prefix-map.c
Modified:
clang/include/clang/Basic/CodeGenOptions.h
clang/include/clang/Driver/Options.td
clang/lib/CodeGen/CoverageMappingGen.cpp
clang/lib/CodeGen/CoverageMappingGen.h
clang/lib/Driver/ToolChains/Clang.cpp
clang/lib/Frontend/CompilerInvocation.cpp
clang/test/Driver/debug-prefix-map.c
Removed:
################################################################################
diff --git a/clang/include/clang/Basic/CodeGenOptions.h b/clang/include/clang/Basic/CodeGenOptions.h
index ef4fa31256cd..5a37569be409 100644
--- a/clang/include/clang/Basic/CodeGenOptions.h
+++ b/clang/include/clang/Basic/CodeGenOptions.h
@@ -169,6 +169,7 @@ class CodeGenOptions : public CodeGenOptionsBase {
std::string RecordCommandLine;
std::map<std::string, std::string> DebugPrefixMap;
+ std::map<std::string, std::string> ProfilePrefixMap;
/// The ABI to use for passing floating point arguments.
std::string FloatABI;
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index dd7978435ff1..0a23fb18d3a6 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -2601,6 +2601,10 @@ def fdebug_prefix_map_EQ
: Joined<["-"], "fdebug-prefix-map=">, Group<f_Group>,
Flags<[CC1Option,CC1AsOption]>,
HelpText<"remap file source paths in debug info">;
+def fprofile_prefix_map_EQ
+ : Joined<["-"], "fprofile-prefix-map=">, Group<f_Group>,
+ Flags<[CC1Option]>,
+ HelpText<"remap file source paths in coverage info">;
def ffile_prefix_map_EQ
: Joined<["-"], "ffile-prefix-map=">, Group<f_Group>,
HelpText<"remap file source paths in debug info and predefined preprocessor macros">;
diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index c474546d4abf..5c25c204cc0b 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -1544,13 +1544,6 @@ struct CounterCoverageMappingBuilder
}
};
-std::string normalizeFilename(StringRef Filename) {
- llvm::SmallString<256> Path(Filename);
- llvm::sys::fs::make_absolute(Path);
- llvm::sys::path::remove_dots(Path, /*remove_dot_dot=*/true);
- return std::string(Path);
-}
-
} // end anonymous namespace
static void dump(llvm::raw_ostream &OS, StringRef FunctionName,
@@ -1592,6 +1585,23 @@ static void dump(llvm::raw_ostream &OS, StringRef FunctionName,
}
}
+CoverageMappingModuleGen::CoverageMappingModuleGen(
+ CodeGenModule &CGM, CoverageSourceInfo &SourceInfo)
+ : CGM(CGM), SourceInfo(SourceInfo) {
+ ProfilePrefixMap = CGM.getCodeGenOpts().ProfilePrefixMap;
+}
+
+std::string CoverageMappingModuleGen::normalizeFilename(StringRef Filename) {
+ llvm::SmallString<256> Path(Filename);
+ llvm::sys::fs::make_absolute(Path);
+ llvm::sys::path::remove_dots(Path, /*remove_dot_dot=*/true);
+ for (const auto &Entry : ProfilePrefixMap) {
+ if (llvm::sys::path::replace_path_prefix(Path, Entry.first, Entry.second))
+ break;
+ }
+ return Path.str().str();
+}
+
static std::string getInstrProfSection(const CodeGenModule &CGM,
llvm::InstrProfSectKind SK) {
return llvm::getInstrProfSectionName(
diff --git a/clang/lib/CodeGen/CoverageMappingGen.h b/clang/lib/CodeGen/CoverageMappingGen.h
index 9d0aa3b9cad1..b26f79be5316 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.h
+++ b/clang/lib/CodeGen/CoverageMappingGen.h
@@ -93,6 +93,9 @@ class CoverageMappingModuleGen {
llvm::SmallDenseMap<const FileEntry *, unsigned, 8> FileEntries;
std::vector<llvm::Constant *> FunctionNames;
std::vector<FunctionInfo> FunctionRecords;
+ std::map<std::string, std::string> ProfilePrefixMap;
+
+ std::string normalizeFilename(StringRef Filename);
/// Emit a function record.
void emitFunctionMappingRecord(const FunctionInfo &Info,
@@ -101,8 +104,7 @@ class CoverageMappingModuleGen {
public:
static CoverageSourceInfo *setUpCoverageCallbacks(Preprocessor &PP);
- CoverageMappingModuleGen(CodeGenModule &CGM, CoverageSourceInfo &SourceInfo)
- : CGM(CGM), SourceInfo(SourceInfo) {}
+ CoverageMappingModuleGen(CodeGenModule &CGM, CoverageSourceInfo &SourceInfo);
CoverageSourceInfo &getSourceInfo() const {
return SourceInfo;
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 7ae0de21317d..8530ac765332 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -656,6 +656,21 @@ static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,
}
}
+/// Add a CC1 and CC1AS option to specify the coverage file path prefix map.
+static void addProfilePrefixMapArg(const Driver &D, const ArgList &Args,
+ ArgStringList &CmdArgs) {
+ for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
+ options::OPT_fprofile_prefix_map_EQ)) {
+ StringRef Map = A->getValue();
+ if (Map.find('=') == StringRef::npos)
+ D.Diag(diag::err_drv_invalid_argument_to_option)
+ << Map << A->getOption().getName();
+ else
+ CmdArgs.push_back(Args.MakeArgString("-fprofile-prefix-map=" + Map));
+ A->claim();
+ }
+}
+
/// Vectorize at all optimization levels greater than 1 except for -Oz.
/// For -Oz the loop vectorizer is disabled, while the slp vectorizer is
/// enabled.
@@ -1360,6 +1375,7 @@ void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
}
addMacroPrefixMapArg(D, Args, CmdArgs);
+ addProfilePrefixMapArg(D, Args, CmdArgs);
}
// FIXME: Move to target hook.
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index d18e6b9f9320..3656410562ba 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -990,6 +990,12 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
{std::string(Split.first), std::string(Split.second)});
}
+ for (const auto &Arg : Args.getAllArgValues(OPT_fprofile_prefix_map_EQ)) {
+ auto Split = StringRef(Arg).split('=');
+ Opts.ProfilePrefixMap.insert(
+ {std::string(Split.first), std::string(Split.second)});
+ }
+
const llvm::Triple::ArchType DebugEntryValueArchs[] = {
llvm::Triple::x86, llvm::Triple::x86_64, llvm::Triple::aarch64,
llvm::Triple::arm, llvm::Triple::armeb, llvm::Triple::mips,
diff --git a/clang/test/Driver/debug-prefix-map.c b/clang/test/Driver/debug-prefix-map.c
index f2c87cb7c11c..748d6b8bf180 100644
--- a/clang/test/Driver/debug-prefix-map.c
+++ b/clang/test/Driver/debug-prefix-map.c
@@ -1,28 +1,39 @@
// RUN: %clang -### -fdebug-prefix-map=old %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-INVALID
// RUN: %clang -### -fmacro-prefix-map=old %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-INVALID
+// RUN: %clang -### -fprofile-prefix-map=old %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-INVALID
// RUN: %clang -### -ffile-prefix-map=old %s 2>&1 | FileCheck %s -check-prefix CHECK-FILE-INVALID
// RUN: %clang -### -fdebug-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-SIMPLE
// RUN: %clang -### -fmacro-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-SIMPLE
+// RUN: %clang -### -fprofile-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-SIMPLE
// RUN: %clang -### -ffile-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-SIMPLE
// RUN: %clang -### -ffile-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-SIMPLE
+// RUN: %clang -### -ffile-prefix-map=old=new %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-SIMPLE
// RUN: %clang -### -fdebug-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-COMPLEX
// RUN: %clang -### -fmacro-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-COMPLEX
+// RUN: %clang -### -fprofile-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-COMPLEX
// RUN: %clang -### -ffile-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-COMPLEX
// RUN: %clang -### -ffile-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-COMPLEX
+// RUN: %clang -### -ffile-prefix-map=old=n=ew %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-COMPLEX
// RUN: %clang -### -fdebug-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-EMPTY
// RUN: %clang -### -fmacro-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-EMPTY
+// RUN: %clang -### -fprofile-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-EMPTY
// RUN: %clang -### -ffile-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-DEBUG-EMPTY
// RUN: %clang -### -ffile-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-MACRO-EMPTY
+// RUN: %clang -### -ffile-prefix-map=old= %s 2>&1 | FileCheck %s -check-prefix CHECK-PROFILE-EMPTY
// CHECK-DEBUG-INVALID: error: invalid argument 'old' to -fdebug-prefix-map
// CHECK-MACRO-INVALID: error: invalid argument 'old' to -fmacro-prefix-map
+// CHECK-PROFILE-INVALID: error: invalid argument 'old' to -fprofile-prefix-map
// CHECK-FILE-INVALID: error: invalid argument 'old' to -ffile-prefix-map
// CHECK-DEBUG-SIMPLE: fdebug-prefix-map=old=new
// CHECK-MACRO-SIMPLE: fmacro-prefix-map=old=new
+// CHECK-PROFILE-SIMPLE: fprofile-prefix-map=old=new
// CHECK-DEBUG-COMPLEX: fdebug-prefix-map=old=n=ew
// CHECK-MACRO-COMPLEX: fmacro-prefix-map=old=n=ew
+// CHECK-PROFILE-COMPLEX: fprofile-prefix-map=old=n=ew
// CHECK-DEBUG-EMPTY: fdebug-prefix-map=old=
// CHECK-MACRO-EMPTY: fmacro-prefix-map=old=
+// CHECK-PROFILE-EMPTY: fprofile-prefix-map=old=
diff --git a/clang/test/Profile/profile-prefix-map.c b/clang/test/Profile/profile-prefix-map.c
new file mode 100644
index 000000000000..1b316d0149c2
--- /dev/null
+++ b/clang/test/Profile/profile-prefix-map.c
@@ -0,0 +1,14 @@
+// %s expands to an absolute path, so to test relative paths we need to create a
+// clean directory, put the source there, and cd into it.
+// RUN: rm -rf %t
+// RUN: mkdir -p %t/root/nested
+// RUN: echo "void f1() {}" > %t/root/nested/profile-prefix-map.c
+// RUN: cd %t/root
+
+// RUN: %clang_cc1 -fprofile-instrument=clang -fcoverage-mapping -emit-llvm -mllvm -enable-name-compression=false -main-file-name profile-prefix-map.c nested/profile-prefix-map.c -o - | FileCheck --check-prefix=ABSOLUTE %s
+//
+// ABSOLUTE: @__llvm_coverage_mapping = {{.*"\\01.*root.*nested.*profile-prefix-map\.c}}
+
+// RUN: %clang_cc1 -fprofile-instrument=clang -fcoverage-mapping -emit-llvm -mllvm -enable-name-compression=false -main-file-name profile-prefix-map.c nested/profile-prefix-map.c -fprofile-prefix-map=%/t/root=. -o - | FileCheck --check-prefix=PROFILE-PREFIX-MAP %s --implicit-check-not=root
+//
+// PROFILE-PREFIX-MAP: @__llvm_coverage_mapping = {{.*"\\01[^/]*}}.{{/|\\+}}nested{{.*profile-prefix-map\.c}}
More information about the cfe-commits
mailing list