[esan] Add working set tool driver flags

[bruening]

Summary

Adds a new -fsanitize=efficiency-working-set flag to enable esan's working
set tool. Adds appropriate tests for the new flag.

include/clang/Basic/Sanitizers.def

SANITIZER_GROUP("integer", Integer,
                 SignedIntegerOverflow | UnsignedIntegerOverflow | Shift |
                 IntegerDivideByZero)
 
 SANITIZER("local-bounds", LocalBounds)
 SANITIZER_GROUP("bounds", Bounds, ArrayBounds | LocalBounds)
 
 // EfficiencySanitizer
 SANITIZER("efficiency-cache-frag", EfficiencyCacheFrag)
+SANITIZER("efficiency-working-set", EfficiencyWorkingSet)
 // Meta-group only used internally.
-SANITIZER_GROUP("efficiency-all", Efficiency, EfficiencyCacheFrag)
+SANITIZER_GROUP("efficiency-all", Efficiency,
+                EfficiencyCacheFrag | EfficiencyWorkingSet)
 
 // Magic group, containing all sanitizers. For example, "-fno-sanitize=all"
 // can be used to disable all the sanitizers.
 SANITIZER_GROUP("all", All, ~0ULL)
 
 #undef SANITIZER
 #undef SANITIZER_GROUP

lib/CodeGen/BackendUtil.cpp

 static void addEfficiencySanitizerPass(const PassManagerBuilder &Builder,
                                        legacy::PassManagerBase &PM) {
   const PassManagerBuilderWrapper &BuilderWrapper =
       static_cast<const PassManagerBuilderWrapper&>(Builder);
   const LangOptions &LangOpts = BuilderWrapper.getLangOpts();
   EfficiencySanitizerOptions Opts;
   if (LangOpts.Sanitize.has(SanitizerKind::EfficiencyCacheFrag))
     Opts.ToolType = EfficiencySanitizerOptions::ESAN_CacheFrag;
+  else if (LangOpts.Sanitize.has(SanitizerKind::EfficiencyWorkingSet))
+    Opts.ToolType = EfficiencySanitizerOptions::ESAN_WorkingSet;
   PM.add(createEfficiencySanitizerPass(Opts));
 }
 
 static TargetLibraryInfoImpl *createTLII(llvm::Triple &TargetTriple,
                                          const CodeGenOptions &CodeGenOpts) {
   TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple);
   if (!CodeGenOpts.SimplifyLibCalls)
     TLII->disableAllFunctions();

test/Driver/esan.c

 // RUN: %clang     -target x86_64-unknown-linux -fsanitize=efficiency-cache-frag %s -S -emit-llvm -o - | FileCheck %s
 // RUN: %clang -O1 -target x86_64-unknown-linux -fsanitize=efficiency-cache-frag %s -S -emit-llvm -o - | FileCheck %s
 // RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize=efficiency-cache-frag %s -S -emit-llvm -o - | FileCheck %s
 // RUN: %clang -O3 -target x86_64-unknown-linux -fsanitize=efficiency-cache-frag %s -S -emit-llvm -o - | FileCheck %s
-// RUN: %clang     -target x86_64-unknown-linux -fsanitize=efficiency-cache-frag  %s -S -emit-llvm -o - | FileCheck %s
-// Verify that -fsanitize=efficiency-cache-frag invokes esan instrumentation.
+// RUN: %clang     -target x86_64-unknown-linux -fsanitize=efficiency-working-set %s -S -emit-llvm -o - | FileCheck %s
+// RUN: %clang -O1 -target x86_64-unknown-linux -fsanitize=efficiency-working-set %s -S -emit-llvm -o - | FileCheck %s
+// RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize=efficiency-working-set %s -S -emit-llvm -o - | FileCheck %s
+// RUN: %clang -O3 -target x86_64-unknown-linux -fsanitize=efficiency-working-set %s -S -emit-llvm -o - | FileCheck %s
+// Verify that -fsanitize=efficiency-* invokes esan instrumentation.
 
 int foo(int *a) { return *a; }
 // CHECK: __esan_init

test/Driver/fsanitize.c

 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=kernel-address,address -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANKA-SANA
 // CHECK-SANKA-SANA: '-fsanitize=kernel-address' not allowed with '-fsanitize=address'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=kernel-address,leak -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANKA-SANL
 // CHECK-SANKA-SANL: '-fsanitize=kernel-address' not allowed with '-fsanitize=leak'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag,address -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANA
-// CHECK-SANE-SANA: '-fsanitize=efficiency-cache-frag' not allowed with '-fsanitize=address'
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set,address -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANA
+// CHECK-SANE-SANA: '-fsanitize=efficiency-{{.*}}' not allowed with '-fsanitize=address'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag,leak -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANL
-// CHECK-SANE-SANL: '-fsanitize=efficiency-cache-frag' not allowed with '-fsanitize=leak'
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set,leak -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANL
+// CHECK-SANE-SANL: '-fsanitize=efficiency-{{.*}}' not allowed with '-fsanitize=leak'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANT
-// CHECK-SANE-SANT: '-fsanitize=efficiency-cache-frag' not allowed with '-fsanitize=thread'
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANT
+// CHECK-SANE-SANT: '-fsanitize=efficiency-{{.*}}' not allowed with '-fsanitize=thread'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANM
-// CHECK-SANE-SANM: '-fsanitize=efficiency-cache-frag' not allowed with '-fsanitize=memory'
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANM
+// CHECK-SANE-SANM: '-fsanitize=efficiency-{{.*}}' not allowed with '-fsanitize=memory'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag,kernel-address -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANKA
-// CHECK-SANE-SANKA: '-fsanitize=efficiency-cache-frag' not allowed with '-fsanitize=kernel-address'
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set,kernel-address -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANE-SANKA
+// CHECK-SANE-SANKA: '-fsanitize=efficiency-{{.*}}' not allowed with '-fsanitize=kernel-address'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize-memory-track-origins -pie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ONLY-TRACK-ORIGINS
 // CHECK-ONLY-TRACK-ORIGINS: warning: argument unused during compilation: '-fsanitize-memory-track-origins'
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=memory -fno-sanitize=memory -fsanitize-memory-track-origins -pie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-TRACK-ORIGINS-DISABLED-MSAN
 // CHECK-TRACK-ORIGINS-DISABLED-MSAN-NOT: warning: argument unused
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-EXTRA-TRACK-ORIGINS

 
 // RUN: %clang -target armv7-apple-ios7 -miphoneos-version-min=7.0 -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-IOS
 // CHECK-ASAN-IOS: -fsanitize=address
 
 // RUN: %clang -target i386-pc-openbsd -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-OPENBSD
 // CHECK-ASAN-OPENBSD: unsupported option '-fsanitize=address' for target 'i386-pc-openbsd'
 
 // RUN: %clang -target i686-linux-gnu -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-X86
-// CHECK-ESAN-X86: error: unsupported option '-fsanitize=efficiency-cache-frag' for target 'i686--linux-gnu'
+// RUN: %clang -target i686-linux-gnu -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-X86
+// CHECK-ESAN-X86: error: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'i686--linux-gnu'
 
 // RUN: %clang -target x86_64-apple-darwin10 -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-DARWIN
-// CHECK-ESAN-DARWIN: unsupported option '-fsanitize=efficiency-cache-frag' for target 'x86_64-apple-darwin10'
+// RUN: %clang -target x86_64-apple-darwin10 -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-DARWIN
+// CHECK-ESAN-DARWIN: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'x86_64-apple-darwin10'
 
 // RUN: %clang -target i386-apple-darwin -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-DARWIN
-// CHECK-ESAN-I386-DARWIN: unsupported option '-fsanitize=efficiency-cache-frag' for target 'i386-apple-darwin'
+// RUN: %clang -target i386-apple-darwin -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-DARWIN
+// CHECK-ESAN-I386-DARWIN: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'i386-apple-darwin'
 
 // RUN: %clang -target arm-apple-ios -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-ARM-IOS
-// CHECK-ESAN-ARM-IOS: unsupported option '-fsanitize=efficiency-cache-frag' for target 'arm-apple-ios'
+// RUN: %clang -target arm-apple-ios -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-ARM-IOS
+// CHECK-ESAN-ARM-IOS: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'arm-apple-ios'
 
 // RUN: %clang -target i386-apple-iossimulator -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-IOSSIMULATOR
-// CHECK-ESAN-I386-IOSSIMULATOR: unsupported option '-fsanitize=efficiency-cache-frag' for target 'i386-apple-iossimulator'
+// RUN: %clang -target i386-apple-iossimulator -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-IOSSIMULATOR
+// CHECK-ESAN-I386-IOSSIMULATOR: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'i386-apple-iossimulator'
 
 // RUN: %clang -target i386-apple-tvossimulator -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-TVOSSIMULATOR
-// CHECK-ESAN-I386-TVOSSIMULATOR: unsupported option '-fsanitize=efficiency-cache-frag' for target 'i386-apple-tvossimulator'
+// RUN: %clang -target i386-apple-tvossimulator -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-I386-TVOSSIMULATOR
+// CHECK-ESAN-I386-TVOSSIMULATOR: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'i386-apple-tvossimulator'
 
 
 
 // RUN: %clang -target x86_64-linux-gnu -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
 // RUN: %clang -target x86_64-apple-darwin10 -fvisibility=hidden -fsanitize=cfi -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI
 // RUN: %clang -target x86_64-linux-gnu -fvisibility=hidden -fsanitize=cfi-derived-cast -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-DCAST
 // RUN: %clang -target x86_64-linux-gnu -fvisibility=hidden -fsanitize=cfi-unrelated-cast -flto -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-UCAST
 // RUN: %clang -target x86_64-linux-gnu -flto -fvisibility=hidden -fsanitize=cfi-nvcall -c %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NVCALL

 // CHECK-DFSAN-PS4: unsupported option '-fsanitize=dataflow' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=leak %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-LSAN-PS4
 // CHECK-LSAN-PS4: unsupported option '-fsanitize=leak' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=memory %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-MSAN-PS4
 // CHECK-MSAN-PS4: unsupported option '-fsanitize=memory' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=thread %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-TSAN-PS4
 // CHECK-TSAN-PS4: unsupported option '-fsanitize=thread' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=efficiency-cache-frag %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-PS4
-// CHECK-ESAN-PS4: unsupported option '-fsanitize=efficiency-cache-frag' for target 'x86_64-scei-ps4'
+// RUN: %clang -target x86_64-scei-ps4 -fsanitize=efficiency-working-set %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN-PS4
+// CHECK-ESAN-PS4: unsupported option '-fsanitize=efficiency-{{.*}}' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-PS4
 // Make sure there are no *.{o,bc} or -l passed before the ASan library.
 // CHECK-ASAN-PS4-NOT: {{(\.(o|bc)"? |-l).*-lSceDbgAddressSanitizer_stub_weak}}
 // CHECK-ASAN-PS4: -lSceDbgAddressSanitizer_stub_weak

test/Driver/sanitize_unwind_tables.c

 // Sanitizers need to unwind stack at any code location.
 // Test that unwind tables are enabled in supported configurations.
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target i686-linux-gnu -fsanitize=address %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target arm-linux-androideabi -fsanitize=address %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=memory %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=thread %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=dataflow %s -### 2>&1 |  FileCheck %s
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-cache-frag %s -### 2>&1 |  FileCheck %s
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=efficiency-working-set %s -### 2>&1 |  FileCheck %s
 
 // CHECK: -munwind-tables

test/Driver/sanitizer-ld.c

 // RUN:     -shared \
 // RUN:   | FileCheck --check-prefix=CHECK-AUBSAN-PS4 %s
 // CHECK-AUBSAN-PS4: "{{.*}}ld{{(.gold)?(.exe)?}}"
 // CHECK-AUBSAN-PS4: -lSceDbgAddressSanitizer_stub_weak
 
 // RUN: %clang -fsanitize=efficiency-cache-frag %s -### -o %t.o 2>&1 \
 // RUN:     -target x86_64-unknown-linux \
 // RUN:   | FileCheck --check-prefix=CHECK-ESAN-LINUX %s
+// RUN: %clang -fsanitize=efficiency-working-set %s -### -o %t.o 2>&1 \
+// RUN:     -target x86_64-unknown-linux \
+// RUN:   | FileCheck --check-prefix=CHECK-ESAN-LINUX %s
 //
 // CHECK-ESAN-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-ESAN-LINUX: libclang_rt.esan-x86_64.a

test/Lexer/has_feature_efficiency_sanitizer.cpp

 // RUN: %clang_cc1 -E -fsanitize=efficiency-cache-frag %s -o - | FileCheck --check-prefix=CHECK-ESAN %s
+// RUN: %clang_cc1 -E -fsanitize=efficiency-working-set %s -o - | FileCheck --check-prefix=CHECK-ESAN %s
 // RUN: %clang_cc1 -E  %s -o - | FileCheck --check-prefix=CHECK-NO-ESAN %s
 
 #if __has_feature(efficiency_sanitizer)
 int EfficiencySanitizerEnabled();
 #else
 int EfficiencySanitizerDisabled();
 #endif
 
 // CHECK-ESAN: EfficiencySanitizerEnabled
 // CHECK-NO-ESAN: EfficiencySanitizerDisabled