emscripten-core · aheejin · Jan 3, 2025 · Nov 19, 2024 · Oct 4, 2024 · Nov 19, 2024
diff --git a/clang/lib/Driver/ToolChains/Hexagon.cpp b/clang/lib/Driver/ToolChains/Hexagon.cpp
@@ -294,9 +294,10 @@ constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
   bool IncStartFiles = !Args.hasArg(options::OPT_nostartfiles);
   bool IncDefLibs = !Args.hasArg(options::OPT_nodefaultlibs);
   bool UseG0 = false;
-  const char *Exec = Args.MakeArgString(HTC.GetLinkerPath());
-  bool UseLLD = (llvm::sys::path::filename(Exec).equals_insensitive("ld.lld") ||
-                 llvm::sys::path::stem(Exec).equals_insensitive("ld.lld"));
+  bool UseLLD = false;
+  const char *Exec = Args.MakeArgString(HTC.GetLinkerPath(&UseLLD));
+  UseLLD = UseLLD || llvm::sys::path::filename(Exec).ends_with("ld.lld") ||
+           llvm::sys::path::stem(Exec).ends_with("ld.lld");
   bool UseShared = IsShared && !IsStatic;
   StringRef CpuVer = toolchains::HexagonToolChain::GetTargetCPUVersion(Args);
 

diff --git a/clang/lib/Interpreter/CMakeLists.txt b/clang/lib/Interpreter/CMakeLists.txt
@@ -15,6 +15,7 @@ set(LLVM_LINK_COMPONENTS
 if (EMSCRIPTEN AND "lld" IN_LIST LLVM_ENABLE_PROJECTS)
   set(WASM_SRC Wasm.cpp)
   set(WASM_LINK lldWasm)
+  set(COMMON_LINK lldCommon)
 endif()
 
 add_clang_library(clangInterpreter
@@ -45,6 +46,7 @@ add_clang_library(clangInterpreter
   clangSema
   clangSerialization
   ${WASM_LINK}
+  ${COMMON_LINK}
   )
 
 if ((MINGW OR CYGWIN) AND BUILD_SHARED_LIBS)

diff --git a/clang/lib/Interpreter/IncrementalExecutor.h b/clang/lib/Interpreter/IncrementalExecutor.h
@@ -56,7 +56,7 @@ class IncrementalExecutor {
   virtual llvm::Error addModule(PartialTranslationUnit &PTU);
   virtual llvm::Error removeModule(PartialTranslationUnit &PTU);
   virtual llvm::Error runCtors() const;
-  llvm::Error cleanUp();
+  virtual llvm::Error cleanUp();
   llvm::Expected<llvm::orc::ExecutorAddr>
   getSymbolAddress(llvm::StringRef Name, SymbolNameKind NameKind) const;
 

diff --git a/clang/lib/Interpreter/Interpreter.cpp b/clang/lib/Interpreter/Interpreter.cpp
@@ -192,8 +192,8 @@ IncrementalCompilerBuilder::CreateCpp() {
 #ifdef __EMSCRIPTEN__
   Argv.push_back("-target");
   Argv.push_back("wasm32-unknown-emscripten");
-  Argv.push_back("-pie");
   Argv.push_back("-shared");
+  Argv.push_back("-fvisibility=default");
 #endif
   Argv.insert(Argv.end(), UserArgs.begin(), UserArgs.end());
 

diff --git a/clang/lib/Interpreter/Wasm.cpp b/clang/lib/Interpreter/Wasm.cpp
@@ -23,6 +23,31 @@
 #include <string>
 
 namespace lld {
+enum Flavor {
+  Invalid,
+  Gnu,     // -flavor gnu
+  MinGW,   // -flavor gnu MinGW
+  WinLink, // -flavor link
+  Darwin,  // -flavor darwin
+  Wasm,    // -flavor wasm
+};
+
+using Driver = bool (*)(llvm::ArrayRef<const char *>, llvm::raw_ostream &,
+                        llvm::raw_ostream &, bool, bool);
+
+struct DriverDef {
+  Flavor f;
+  Driver d;
+};
+
+struct Result {
+  int retCode;
+  bool canRunAgain;
+};
+
+Result lldMain(llvm::ArrayRef<const char *> args, llvm::raw_ostream &stdoutOS,
+               llvm::raw_ostream &stderrOS, llvm::ArrayRef<DriverDef> drivers);
+
 namespace wasm {
 bool link(llvm::ArrayRef<const char *> args, llvm::raw_ostream &stdoutOS,
           llvm::raw_ostream &stderrOS, bool exitEarly, bool disableOutput);
@@ -51,13 +76,14 @@ llvm::Error WasmIncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
   llvm::TargetMachine *TargetMachine = Target->createTargetMachine(
       PTU.TheModule->getTargetTriple(), "", "", TO, llvm::Reloc::Model::PIC_);
   PTU.TheModule->setDataLayout(TargetMachine->createDataLayout());
-  std::string OutputFileName = PTU.TheModule->getName().str() + ".wasm";
+  std::string ObjectFileName = PTU.TheModule->getName().str() + ".o";
+  std::string BinaryFileName = PTU.TheModule->getName().str() + ".wasm";
 
   std::error_code Error;
-  llvm::raw_fd_ostream OutputFile(llvm::StringRef(OutputFileName), Error);
+  llvm::raw_fd_ostream ObjectFileOutput(llvm::StringRef(ObjectFileName), Error);
 
   llvm::legacy::PassManager PM;
-  if (TargetMachine->addPassesToEmitFile(PM, OutputFile, nullptr,
+  if (TargetMachine->addPassesToEmitFile(PM, ObjectFileOutput, nullptr,
                                          llvm::CodeGenFileType::ObjectFile)) {
     return llvm::make_error<llvm::StringError>(
         "Wasm backend cannot produce object.", llvm::inconvertibleErrorCode());
@@ -69,27 +95,30 @@ llvm::Error WasmIncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
                                                llvm::inconvertibleErrorCode());
   }
 
-  OutputFile.close();
+  ObjectFileOutput.close();
 
   std::vector<const char *> LinkerArgs = {"wasm-ld",
-                                          "-pie",
+                                          "-shared",
                                           "--import-memory",
-                                          "--no-entry",
-                                          "--export-all",
                                           "--experimental-pic",
-                                          "--no-export-dynamic",
                                           "--stack-first",
-                                          OutputFileName.c_str(),
+                                          "--allow-undefined",
+                                          ObjectFileName.c_str(),
                                           "-o",
-                                          OutputFileName.c_str()};
-  int Result =
-      lld::wasm::link(LinkerArgs, llvm::outs(), llvm::errs(), false, false);
-  if (!Result)
+                                          BinaryFileName.c_str()};
+
+  const lld::DriverDef WasmDriver = {lld::Flavor::Wasm, &lld::wasm::link};
+  std::vector<lld::DriverDef> WasmDriverArgs;
+  WasmDriverArgs.push_back(WasmDriver);
+  lld::Result Result =
+      lld::lldMain(LinkerArgs, llvm::outs(), llvm::errs(), WasmDriverArgs);
+
+  if (Result.retCode)
     return llvm::make_error<llvm::StringError>(
         "Failed to link incremental module", llvm::inconvertibleErrorCode());
 
   void *LoadedLibModule =
-      dlopen(OutputFileName.c_str(), RTLD_NOW | RTLD_GLOBAL);
+      dlopen(BinaryFileName.c_str(), RTLD_NOW | RTLD_GLOBAL);
   if (LoadedLibModule == nullptr) {
     llvm::errs() << dlerror() << '\n';
     return llvm::make_error<llvm::StringError>(
@@ -109,6 +138,12 @@ llvm::Error WasmIncrementalExecutor::runCtors() const {
   return llvm::Error::success();
 }
 
+llvm::Error WasmIncrementalExecutor::cleanUp() {
+  // Can't call cleanUp through IncrementalExecutor as it
+  // tries to deinitialize JIT which hasn't been initialized
+  return llvm::Error::success();
+}
+
 WasmIncrementalExecutor::~WasmIncrementalExecutor() = default;
 
-} // namespace clang
+} // namespace clang
diff --git a/clang/lib/Interpreter/Wasm.h b/clang/lib/Interpreter/Wasm.h
@@ -28,6 +28,7 @@ class WasmIncrementalExecutor : public IncrementalExecutor {
   llvm::Error addModule(PartialTranslationUnit &PTU) override;
   llvm::Error removeModule(PartialTranslationUnit &PTU) override;
   llvm::Error runCtors() const override;
+  llvm::Error cleanUp() override;
 
   ~WasmIncrementalExecutor() override;
 };

diff --git a/clang/utils/perf-training/perf-helper.py b/clang/utils/perf-training/perf-helper.py
@@ -36,7 +36,7 @@ def clean(args):
             + "\tRemoves all files with extension from <path>."
         )
         return 1
-    for path in args[1:-1]:
+    for path in args[0:-1]:
         for filename in findFilesWithExtension(path, args[-1]):
             os.remove(filename)
     return 0

diff --git a/cmake/Modules/LLVMVersion.cmake b/cmake/Modules/LLVMVersion.cmake
@@ -7,7 +7,7 @@ if(NOT DEFINED LLVM_VERSION_MINOR)
   set(LLVM_VERSION_MINOR 1)
 endif()
 if(NOT DEFINED LLVM_VERSION_PATCH)
-  set(LLVM_VERSION_PATCH 4)
+  set(LLVM_VERSION_PATCH 6)
 endif()
 if(NOT DEFINED LLVM_VERSION_SUFFIX)
   set(LLVM_VERSION_SUFFIX)

diff --git a/compiler-rt/test/asan/TestCases/Windows/delay_dbghelp.cpp b/compiler-rt/test/asan/TestCases/Windows/delay_dbghelp.cpp
@@ -9,7 +9,7 @@
 // static build, there won't be any clang_rt DLLs.
 // RUN: not grep cl""ang_rt %t || \
 // RUN:   grep cl""ang_rt %t | xargs which | \
-// RUN:   xargs llvm-readobj --coff-imports | not grep dbghelp.dll %t
+// RUN:   xargs llvm-readobj --coff-imports | not grep dbghelp.dll
 
 extern "C" int puts(const char *);
 

diff --git a/libcxx/include/__config b/libcxx/include/__config
@@ -27,7 +27,7 @@
 // _LIBCPP_VERSION represents the version of libc++, which matches the version of LLVM.
 // Given a LLVM release LLVM XX.YY.ZZ (e.g. LLVM 17.0.1 == 17.00.01), _LIBCPP_VERSION is
 // defined to XXYYZZ.
-#  define _LIBCPP_VERSION 190104
+#  define _LIBCPP_VERSION 190106
 
 #  define _LIBCPP_CONCAT_IMPL(_X, _Y) _X##_Y
 #  define _LIBCPP_CONCAT(_X, _Y) _LIBCPP_CONCAT_IMPL(_X, _Y)

diff --git a/lld/ELF/Arch/Hexagon.cpp b/lld/ELF/Arch/Hexagon.cpp
@@ -329,7 +329,7 @@ void Hexagon::relocate(uint8_t *loc, const Relocation &rel,
   case R_HEX_B22_PCREL:
   case R_HEX_GD_PLT_B22_PCREL:
   case R_HEX_PLT_B22_PCREL:
-    checkInt(loc, val, 22, rel);
+    checkInt(loc, val, 24, rel);
     or32le(loc, applyMask(0x1ff3ffe, val >> 2));
     break;
   case R_HEX_B22_PCREL_X:

diff --git a/lld/test/ELF/emulation-loongarch.s b/lld/test/ELF/emulation-loongarch.s
@@ -37,7 +37,7 @@
 # LA32-NEXT:   StringTableSectionIndex:
 # LA32-NEXT: }
 
-# RUN: llvm-mc -filetype=obj -triple=loongarch64 %s -o %t.o
+# RUN: llvm-mc -filetype=obj -triple=loongarch64 -mattr=+d %s -o %t.o
 # RUN: ld.lld %t.o -o %t
 # RUN: llvm-readobj --file-headers %t | FileCheck --check-prefix=LA64 %s
 # RUN: ld.lld -m elf64loongarch %t.o -o %t

diff --git a/lld/test/ELF/hexagon-jump-error.s b/lld/test/ELF/hexagon-jump-error.s
@@ -25,7 +25,7 @@ if (p0) jump #1f
 .section b15, "ax"
 1:
 
-# CHECK: relocation R_HEX_B22_PCREL out of range: 8388612 is not in [-2097152, 2097151]
+# CHECK: relocation R_HEX_B22_PCREL out of range: 8388612 is not in [-8388608, 8388607]
 jump #1f
 .space (1<<23)
 .section b22, "ax"

diff --git a/lld/test/ELF/hexagon.s b/lld/test/ELF/hexagon.s
@@ -1,7 +1,9 @@
 # REQUIRES: hexagon
 # RUN: llvm-mc -filetype=obj -triple=hexagon-unknown-elf %s -o %t.o
 # RUN: llvm-mc -filetype=obj -triple=hexagon-unknown-elf %S/Inputs/hexagon.s -o %t1.o
-# RUN: ld.lld %t.o %t1.o -o %t
+# RUN: ld.lld %t.o %t1.o -o %t --Ttext=0x200b4 --section-start=b_1000000=0x1000000 \
+# RUN:  --section-start=b_1000400=0x1000400 --section-start=b_1004000=0x1004000 \
+# RUN:  --section-start=b_1010000=0x1010000 --section-start=b_1800000=0x1800000
 # RUN: llvm-objdump --no-print-imm-hex -d %t | FileCheck %s
 
 # Note: 131584 == 0x20200
@@ -221,3 +223,40 @@ r0 = memw(r1+##_start)
 
 memw(r0+##_start) = r1
 # CHECK: memw(r0+##131644) = r1
+
+
+## Tests for maximum branch ranges reachable without trampolines.
+
+.section b_1000000, "ax"
+## The nop makes sure the first jump is within range.
+nop
+{ r0 = #0; jump #b_1000400 } // R_HEX_B9_PCREL
+if (r0==#0) jump:t #b_1004000 // R_HEX_B13_PCREL
+if (p0) jump #b_1010000 // R_HEX_B15_PCREL
+jump #b_1800000 // R_HEX_B22_PCREL
+
+.section b_1000400, "ax"
+nop
+
+.section b_1004000, "ax"
+nop
+
+.section b_1010000, "ax"
+nop
+
+.section b_1800000, "ax"
+nop
+
+## Make sure we got the right relocations.
+# RUN: llvm-readelf -r %t.o | FileCheck %s --check-prefix=REL
+# REL: R_HEX_B9_PCREL         00000000   b_1000400
+# REL: R_HEX_B13_PCREL        00000000   b_1004000
+# REL: R_HEX_B15_PCREL        00000000   b_1010000
+# REL: R_HEX_B22_PCREL        00000000   b_1800000
+
+# CHECK: 01000000 <b_1000000>:
+# CHECK-NEXT: 1000000: {{.*}} {  nop }
+# CHECK-NEXT: 1000004: {{.*}} {  r0 = #0 ; jump 0x1000400 }
+# CHECK-NEXT: 1000008: {{.*}} {  if (r0==#0) jump:t 0x1004000 }
+# CHECK-NEXT: 100000c: {{.*}} {  if (p0) jump:nt 0x1010000 }
+# CHECK-NEXT: 1000010: {{.*}} {  jump 0x1800000 }
diff --git a/lld/test/ELF/loongarch-interlink.test b/lld/test/ELF/loongarch-interlink.test
@@ -3,9 +3,9 @@
 
 # RUN: yaml2obj %t/blob.yaml -o %t/blob.o
 # RUN: yaml2obj %t/v0-lp64d.yaml -o %t/v0-lp64d.o
-# RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-gnu %t/start.s -o %t/v1-lp64d.o
+# RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-gnu --mattr=+d %t/start.s -o %t/v1-lp64d.o
 # RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-gnusf %t/start.s -o %t/v1-lp64s.o
-# RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-gnu %t/bar.s -o %t/v1-b-lp64d.o
+# RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-gnu --mattr=+d %t/bar.s -o %t/v1-b-lp64d.o
 
 ## Check that binary input results in e_flags=0 output.
 # RUN: ld.lld -m elf64loongarch -b binary %t/blob.bin -o %t/blob.out

diff --git a/lld/wasm/SyntheticSections.cpp b/lld/wasm/SyntheticSections.cpp
@@ -587,8 +587,7 @@ void ElemSection::writeBody() {
     initExpr.Inst.Value.Global = WasmSym::tableBase->getGlobalIndex();
   } else {
     bool is64 = config->is64.value_or(false);
-    initExpr.Inst.Opcode = is64 ? WASM_OPCODE_I64_CONST : WASM_OPCODE_I32_CONST;
-    initExpr.Inst.Value.Int32 = config->tableBase;
+    initExpr = intConst(config->tableBase, is64);
   }
   writeInitExpr(os, initExpr);
 

diff --git a/llvm/include/llvm/Analysis/MemorySSAUpdater.h b/llvm/include/llvm/Analysis/MemorySSAUpdater.h
@@ -192,6 +192,11 @@ class MemorySSAUpdater {
                                        const BasicBlock *BB,
                                        MemorySSA::InsertionPlace Point);
 
+  MemoryAccess *createMemoryAccessInBB(Instruction *I, MemoryAccess *Definition,
+                                       const BasicBlock *BB,
+                                       MemorySSA::InsertionPlace Point,
+                                       bool CreationMustSucceed);
+
   /// Create a MemoryAccess in MemorySSA before an existing MemoryAccess.
   ///
   /// See createMemoryAccessInBB() for usage details.

diff --git a/llvm/lib/Analysis/MemorySSAUpdater.cpp b/llvm/lib/Analysis/MemorySSAUpdater.cpp
@@ -1404,8 +1404,17 @@ void MemorySSAUpdater::changeToUnreachable(const Instruction *I) {
 MemoryAccess *MemorySSAUpdater::createMemoryAccessInBB(
     Instruction *I, MemoryAccess *Definition, const BasicBlock *BB,
     MemorySSA::InsertionPlace Point) {
-  MemoryUseOrDef *NewAccess = MSSA->createDefinedAccess(I, Definition);
-  MSSA->insertIntoListsForBlock(NewAccess, BB, Point);
+  return createMemoryAccessInBB(I, Definition, BB, Point,
+                                /*CreationMustSucceed=*/true);
+}
+
+MemoryAccess *MemorySSAUpdater::createMemoryAccessInBB(
+    Instruction *I, MemoryAccess *Definition, const BasicBlock *BB,
+    MemorySSA::InsertionPlace Point, bool CreationMustSucceed) {
+  MemoryUseOrDef *NewAccess = MSSA->createDefinedAccess(
+      I, Definition, /*Template=*/nullptr, CreationMustSucceed);
+  if (NewAccess)
+    MSSA->insertIntoListsForBlock(NewAccess, BB, Point);
   return NewAccess;
 }
 

diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -6313,8 +6313,10 @@ APInt ScalarEvolution::getConstantMultipleImpl(const SCEV *S) {
     return getConstantMultiple(Z->getOperand()).zext(BitWidth);
   }
   case scSignExtend: {
+    // Only multiples that are a power of 2 will hold after sext.
     const SCEVSignExtendExpr *E = cast<SCEVSignExtendExpr>(S);
-    return getConstantMultiple(E->getOperand()).sext(BitWidth);
+    uint32_t TZ = getMinTrailingZeros(E->getOperand());
+    return GetShiftedByZeros(TZ);
   }
   case scMulExpr: {
     const SCEVMulExpr *M = cast<SCEVMulExpr>(S);

diff --git a/llvm/lib/CodeGen/MachineLICM.cpp b/llvm/lib/CodeGen/MachineLICM.cpp
@@ -1474,7 +1474,7 @@ void MachineLICMBase::InitializeLoadsHoistableLoops() {
       if (!AllowedToHoistLoads[Loop])
         continue;
       for (auto &MI : *MBB) {
-        if (!MI.mayStore() && !MI.isCall() &&
+        if (!MI.isLoadFoldBarrier() && !MI.mayStore() && !MI.isCall() &&
             !(MI.mayLoad() && MI.hasOrderedMemoryRef()))
           continue;
         for (MachineLoop *L = Loop; L != nullptr; L = L->getParentLoop())