merge main into amd-staging

revert: stacked on SPIRV patches
a22578d ConstraintElim: teach fact-transfer about samesign (llvm#115893)

Change-Id: If585e91c8cf2ac18d204be5564131956b18f14e8

Author: ronlieb

clang-tools-extra/clangd/index/SymbolCollector.cpp

@@ -550,9 +550,14 @@ bool SymbolCollector::shouldCollectSymbol(const NamedDecl &ND,
   // Avoid indexing internal symbols in protobuf generated headers.
   if (isPrivateProtoDecl(ND))
     return false;
+
+  // System headers that end with `intrin.h` likely contain useful symbols.
   if (!Opts.CollectReserved &&
       (hasReservedName(ND) || hasReservedScope(*ND.getDeclContext())) &&
-      ASTCtx.getSourceManager().isInSystemHeader(ND.getLocation()))
+      ASTCtx.getSourceManager().isInSystemHeader(ND.getLocation()) &&
+      !ASTCtx.getSourceManager()
+           .getFilename(ND.getLocation())
+           .ends_with("intrin.h"))
     return false;
 
   return true;

clang-tools-extra/clangd/unittests/SymbolCollectorTests.cpp

@@ -2111,6 +2111,20 @@ TEST_F(SymbolCollectorTest, Reserved) {
   EXPECT_THAT(Symbols, IsEmpty());
 }
 
+TEST_F(SymbolCollectorTest, ReservedSymbolInIntrinsicHeader) {
+  const char *Header = R"cpp(
+    #pragma once
+    void __foo();
+  )cpp";
+
+  TestHeaderName = "xintrin.h";
+  TestHeaderURI = URI::create(testPath(TestHeaderName)).toString();
+  InMemoryFileSystem = new llvm::vfs::InMemoryFileSystem;
+  CollectorOpts.FallbackDir = testRoot();
+  runSymbolCollector("#pragma GCC system_header\n" + std::string(Header), "");
+  EXPECT_THAT(Symbols, UnorderedElementsAre(qName("__foo")));
+}
+
 TEST_F(SymbolCollectorTest, Concepts) {
   const char *Header = R"cpp(
     template <class T>

clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -1561,7 +1561,6 @@ void tools::addAsNeededOption(const ToolChain &TC,
 
 void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
                                      const llvm::opt::ArgList &Args,
-                                     const SanitizerArgs &SanArgs,
                                      ArgStringList &CmdArgs) {
   // Force linking against the system libraries sanitizers depends on
   // (see PR15823 why this is necessary).
@@ -1588,18 +1587,18 @@ void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
   // libresolv.a, even if exists, is an empty archive to satisfy POSIX -lresolv
   // requirement.
   if (TC.getTriple().isOSLinux() && !TC.getTriple().isAndroid() &&
-      !TC.getTriple().isMusl() && SanArgs.needsMsanRt())
+      !TC.getTriple().isMusl())
     CmdArgs.push_back("-lresolv");
 }
 
 static void
 collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
-                         const SanitizerArgs &SanArgs,
                          SmallVectorImpl<StringRef> &SharedRuntimes,
                          SmallVectorImpl<StringRef> &StaticRuntimes,
                          SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
                          SmallVectorImpl<StringRef> &HelperStaticRuntimes,
                          SmallVectorImpl<StringRef> &RequiredSymbols) {
+  const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);
   // Collect shared runtimes.
   if (SanArgs.needsSharedRt()) {
     if (SanArgs.needsAsanRt()) {
@@ -1733,12 +1732,12 @@ collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
 // Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
 // C runtime, etc). Returns true if sanitizer system deps need to be linked in.
 bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
-                                 const SanitizerArgs &SanArgs,
                                  ArgStringList &CmdArgs) {
+  const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);
   SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
       NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
   if (SanArgs.linkRuntimes()) {
-    collectSanitizerRuntimes(TC, Args, SanArgs, SharedRuntimes, StaticRuntimes,
+    collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
                              NonWholeStaticRuntimes, HelperStaticRuntimes,
                              RequiredSymbols);
   }

clang/lib/Driver/ToolChains/CommonArgs.h

@@ -41,12 +41,10 @@ void addLinkerCompressDebugSectionsOption(const ToolChain &TC,
 void claimNoWarnArgs(const llvm::opt::ArgList &Args);
 
 bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args,
-                          const SanitizerArgs &SanArgs,
                           llvm::opt::ArgStringList &CmdArgs);
 
 void linkSanitizerRuntimeDeps(const ToolChain &TC,
                               const llvm::opt::ArgList &Args,
-                              const SanitizerArgs &SanArgs,
                               llvm::opt::ArgStringList &CmdArgs);
 
 bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args,

clang/lib/Driver/ToolChains/FreeBSD.cpp

@@ -297,9 +297,7 @@ void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
                   D.getLTOMode() == LTOK_Thin);
   }
 
-  const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps =
-      addSanitizerRuntimes(ToolChain, Args, SanArgs, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
   addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
@@ -340,7 +338,7 @@ void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     }
 
     if (NeedsSanitizerDeps)
-      linkSanitizerRuntimeDeps(ToolChain, Args, SanArgs, CmdArgs);
+      linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
     if (NeedsXRayDeps)
       linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
     // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding

clang/lib/Driver/ToolChains/Fuchsia.cpp

@@ -184,8 +184,7 @@ void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     // Note that Fuchsia never needs to link in sanitizer runtime deps.  Any
     // sanitizer runtimes with system dependencies use the `.deplibs` feature
     // instead.
-    const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
-    addSanitizerRuntimes(ToolChain, Args, SanArgs, CmdArgs);
+    addSanitizerRuntimes(ToolChain, Args, CmdArgs);
 
     addXRayRuntime(ToolChain, Args, CmdArgs);
 
@@ -318,9 +317,10 @@ Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
       Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions, true);
   addMultilibFlag(Exceptions, "-fexceptions", Flags);
   addMultilibFlag(!Exceptions, "-fno-exceptions", Flags);
-  const SanitizerArgs &SanArgs = getSanitizerArgs(Args);
-  addMultilibFlag(SanArgs.needsAsanRt(), "-fsanitize=address", Flags);
-  addMultilibFlag(SanArgs.needsHwasanRt(), "-fsanitize=hwaddress", Flags);
+  addMultilibFlag(getSanitizerArgs(Args).needsAsanRt(), "-fsanitize=address",
+                  Flags);
+  addMultilibFlag(getSanitizerArgs(Args).needsHwasanRt(),
+                  "-fsanitize=hwaddress", Flags);
 
   addMultilibFlag(Args.getLastArgValue(options::OPT_fcxx_abi_EQ) == "itanium",
                   "-fc++-abi=itanium", Flags);

clang/lib/Driver/ToolChains/Gnu.cpp

@@ -23,7 +23,6 @@
 #include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Driver/MultilibBuilder.h"
 #include "clang/Driver/Options.h"
-#include "clang/Driver/SanitizerArgs.h"
 #include "clang/Driver/Tool.h"
 #include "clang/Driver/ToolChain.h"
 #include "llvm/ADT/StringSet.h"
@@ -550,9 +549,7 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
     CmdArgs.push_back("--no-demangle");
 
-  const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps =
-      addSanitizerRuntimes(ToolChain, Args, SanArgs, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
   addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
@@ -597,7 +594,7 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
         CmdArgs.push_back("--start-group");
 
       if (NeedsSanitizerDeps)
-        linkSanitizerRuntimeDeps(ToolChain, Args, SanArgs, CmdArgs);
+        linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
 
       if (NeedsXRayDeps)
         linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);

clang/lib/Driver/ToolChains/Hexagon.cpp

@@ -13,7 +13,6 @@
 #include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Driver/InputInfo.h"
 #include "clang/Driver/Options.h"
-#include "clang/Driver/SanitizerArgs.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Option/ArgList.h"
 #include "llvm/Support/FileSystem.h"
@@ -216,8 +215,7 @@ void hexagon::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
       "-mcpu=hexagon" +
       toolchains::HexagonToolChain::GetTargetCPUVersion(Args)));
 
-  SanitizerArgs SanArgs = HTC.getSanitizerArgs(Args);
-  addSanitizerRuntimes(HTC, Args, SanArgs, CmdArgs);
+  addSanitizerRuntimes(HTC, Args, CmdArgs);
 
   assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
   if (Output.isFilename()) {
@@ -303,8 +301,7 @@ constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
   bool UseShared = IsShared && !IsStatic;
   StringRef CpuVer = toolchains::HexagonToolChain::GetTargetCPUVersion(Args);
 
-  const SanitizerArgs &SanArgs = HTC.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps = addSanitizerRuntimes(HTC, Args, SanArgs, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(HTC, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(HTC, Args, CmdArgs);
 
   //----------------------------------------------------------------------------
@@ -374,7 +371,7 @@ constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
 
     if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
       if (NeedsSanitizerDeps) {
-        linkSanitizerRuntimeDeps(HTC, Args, SanArgs, CmdArgs);
+        linkSanitizerRuntimeDeps(HTC, Args, CmdArgs);
 
         if (UNW != ToolChain::UNW_None)
           CmdArgs.push_back("-lunwind");

clang/lib/Driver/ToolChains/NetBSD.cpp

@@ -274,12 +274,11 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
                             options::OPT_s, options::OPT_t});
   ToolChain.AddFilePathLibArgs(Args, CmdArgs);
 
-  const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps =
-      addSanitizerRuntimes(ToolChain, Args, SanArgs, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
 
+  const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
   if (SanArgs.needsSharedRt()) {
     CmdArgs.push_back("-rpath");
     CmdArgs.push_back(Args.MakeArgString(ToolChain.getCompilerRTPath()));
@@ -335,7 +334,7 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     }
 
     if (NeedsSanitizerDeps)
-      linkSanitizerRuntimeDeps(ToolChain, Args, SanArgs, CmdArgs);
+      linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
     if (NeedsXRayDeps)
       linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
     if (Args.hasArg(options::OPT_pthread))

clang/lib/Driver/ToolChains/OpenBSD.cpp

@@ -213,9 +213,7 @@ void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
                   D.getLTOMode() == LTOK_Thin);
   }
 
-  const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps =
-      addSanitizerRuntimes(ToolChain, Args, SanArgs, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
 
@@ -253,7 +251,7 @@ void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 
     if (NeedsSanitizerDeps) {
       CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins"));
-      linkSanitizerRuntimeDeps(ToolChain, Args, SanArgs, CmdArgs);
+      linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
     }
     if (NeedsXRayDeps) {
       CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins"));

clang/lib/Driver/ToolChains/Solaris.cpp

@@ -203,8 +203,7 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 
   Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group});
 
-  const SanitizerArgs &SA = ToolChain.getSanitizerArgs(Args);
-  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, SA, CmdArgs);
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
@@ -251,8 +250,9 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     if (!Args.hasArg(options::OPT_shared)) {
       CmdArgs.push_back("-lgcc");
     }
+    const SanitizerArgs &SA = ToolChain.getSanitizerArgs(Args);
     if (NeedsSanitizerDeps) {
-      linkSanitizerRuntimeDeps(ToolChain, Args, SA, CmdArgs);
+      linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
 
       // Work around Solaris/amd64 ld bug when calling __tls_get_addr directly.
       // However, ld -z relax=transtls is available since Solaris 11.2, but not