[clang] [libunwind] [llvm] [WebAssembly] Support for new target `wasm32-linux-muslwali` (PR #162581)

Arjun Ramesh via llvm-commits llvm-commits at lists.llvm.org
Fri Oct 10 09:54:52 PDT 2025


https://github.com/arjunr2 updated https://github.com/llvm/llvm-project/pull/162581

>From 467006e41c06211befcc00c8ea15432c37979fbf Mon Sep 17 00:00:00 2001
From: Arjun Ramesh <arjunr2 at andrew.cmu.edu>
Date: Sat, 30 Aug 2025 01:01:02 -0400
Subject: [PATCH 1/4] Support for new target `wasm32-linux-muslwali` in
 clang/libunwind

---
 clang/lib/Basic/Targets.cpp             | 30 +++++++++++++------------
 clang/lib/Basic/Targets/OSTargets.h     | 17 ++++++++++++++
 clang/lib/Basic/Targets/WebAssembly.h   | 21 ++++++++++++-----
 clang/lib/Driver/Driver.cpp             |  2 ++
 clang/test/Driver/wasm-toolchain.c      |  7 ++++++
 clang/test/Driver/wasm-toolchain.cpp    | 25 +++++++++++++++++++++
 libunwind/src/UnwindRegistersRestore.S  |  7 ++++--
 libunwind/src/UnwindRegistersSave.S     |  8 +++++--
 llvm/include/llvm/TargetParser/Triple.h |  8 +++++++
 llvm/lib/TargetParser/Triple.cpp        |  1 +
 10 files changed, 103 insertions(+), 23 deletions(-)

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index d9aafc6c75d3b..3afa04c812749 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -453,8 +453,7 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<FuchsiaTargetInfo<RISCV64TargetInfo>>(Triple,
                                                                     Opts);
     case llvm::Triple::Haiku:
-      return std::make_unique<HaikuTargetInfo<RISCV64TargetInfo>>(Triple,
-                                                                  Opts);
+      return std::make_unique<HaikuTargetInfo<RISCV64TargetInfo>>(Triple, Opts);
     case llvm::Triple::Linux:
       switch (Triple.getEnvironment()) {
       default:
@@ -698,17 +697,21 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
         !Triple.isOSBinFormatWasm())
       return nullptr;
     switch (os) {
-      case llvm::Triple::WASI:
+    case llvm::Triple::WASI:
       return std::make_unique<WASITargetInfo<WebAssembly32TargetInfo>>(Triple,
                                                                        Opts);
-      case llvm::Triple::Emscripten:
+    case llvm::Triple::Emscripten:
       return std::make_unique<EmscriptenTargetInfo<WebAssembly32TargetInfo>>(
           Triple, Opts);
-      case llvm::Triple::UnknownOS:
+
+    case llvm::Triple::Linux:
+      return std::make_unique<WALITargetInfo<WebAssembly32TargetInfo>>(Triple,
+                                                                       Opts);
+    case llvm::Triple::UnknownOS:
       return std::make_unique<WebAssemblyOSTargetInfo<WebAssembly32TargetInfo>>(
           Triple, Opts);
-      default:
-        return nullptr;
+    default:
+      return nullptr;
     }
   case llvm::Triple::wasm64:
     if (Triple.getSubArch() != llvm::Triple::NoSubArch ||
@@ -716,17 +719,17 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
         !Triple.isOSBinFormatWasm())
       return nullptr;
     switch (os) {
-      case llvm::Triple::WASI:
+    case llvm::Triple::WASI:
       return std::make_unique<WASITargetInfo<WebAssembly64TargetInfo>>(Triple,
                                                                        Opts);
-      case llvm::Triple::Emscripten:
+    case llvm::Triple::Emscripten:
       return std::make_unique<EmscriptenTargetInfo<WebAssembly64TargetInfo>>(
           Triple, Opts);
-      case llvm::Triple::UnknownOS:
+    case llvm::Triple::UnknownOS:
       return std::make_unique<WebAssemblyOSTargetInfo<WebAssembly64TargetInfo>>(
           Triple, Opts);
-      default:
-        return nullptr;
+    default:
+      return nullptr;
     }
 
   case llvm::Triple::dxil:
@@ -806,8 +809,7 @@ TargetInfo *TargetInfo::CreateTargetInfo(DiagnosticsEngine &Diags,
   }
 
   // Check the TuneCPU name if specified.
-  if (!Opts->TuneCPU.empty() &&
-      !Target->isValidTuneCPUName(Opts->TuneCPU)) {
+  if (!Opts->TuneCPU.empty() && !Target->isValidTuneCPUName(Opts->TuneCPU)) {
     Diags.Report(diag::err_target_unknown_cpu) << Opts->TuneCPU;
     SmallVector<StringRef, 32> ValidList;
     Target->fillValidTuneCPUList(ValidList);
diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index 6c49a09ab27f5..bd6ffcf3173ab 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -948,6 +948,23 @@ class LLVM_LIBRARY_VISIBILITY WASITargetInfo
   using WebAssemblyOSTargetInfo<Target>::WebAssemblyOSTargetInfo;
 };
 
+// WALI target
+template <typename Target>
+class LLVM_LIBRARY_VISIBILITY WALITargetInfo
+    : public WebAssemblyOSTargetInfo<Target> {
+  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+                    MacroBuilder &Builder) const final {
+    WebAssemblyOSTargetInfo<Target>::getOSDefines(Opts, Triple, Builder);
+    // Linux defines; list based off of gcc output
+    DefineStd(Builder, "unix", Opts);
+    DefineStd(Builder, "linux", Opts);
+    Builder.defineMacro("__wali__");
+  }
+
+public:
+  using WebAssemblyOSTargetInfo<Target>::WebAssemblyOSTargetInfo;
+};
+
 // Emscripten target
 template <typename Target>
 class LLVM_LIBRARY_VISIBILITY EmscriptenTargetInfo
diff --git a/clang/lib/Basic/Targets/WebAssembly.h b/clang/lib/Basic/Targets/WebAssembly.h
index eba74229dfc14..4de6ce6bb5a21 100644
--- a/clang/lib/Basic/Targets/WebAssembly.h
+++ b/clang/lib/Basic/Targets/WebAssembly.h
@@ -88,12 +88,23 @@ class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo {
     LongDoubleWidth = LongDoubleAlign = 128;
     LongDoubleFormat = &llvm::APFloat::IEEEquad();
     MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
-    // size_t being unsigned long for both wasm32 and wasm64 makes mangled names
-    // more consistent between the two.
-    SizeType = UnsignedLong;
-    PtrDiffType = SignedLong;
-    IntPtrType = SignedLong;
     HasUnalignedAccess = true;
+    if (T.isWALI()) {
+      // The WALI ABI is documented here:
+      // https://doc.rust-lang.org/rustc/platform-support/wasm32-wali-linux.html
+      // Currently, this ABI only applies to wasm32 targets and notably requires
+      // 64-bit longs
+      LongAlign = LongWidth = 64;
+      SizeType = UnsignedInt;
+      PtrDiffType = SignedInt;
+      IntPtrType = SignedInt;
+    } else {
+      // size_t being unsigned long for both wasm32 and wasm64 makes mangled
+      // names more consistent between the two.
+      SizeType = UnsignedLong;
+      PtrDiffType = SignedLong;
+      IntPtrType = SignedLong;
+    }
   }
 
   StringRef getABI() const override;
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 85a1335785542..40ea513e85427 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -6836,6 +6836,8 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
         TC = std::make_unique<toolchains::VEToolChain>(*this, Target, Args);
       else if (Target.isOHOSFamily())
         TC = std::make_unique<toolchains::OHOS>(*this, Target, Args);
+      else if (Target.isWALI())
+        TC = std::make_unique<toolchains::WebAssembly>(*this, Target, Args);
       else
         TC = std::make_unique<toolchains::Linux>(*this, Target, Args);
       break;
diff --git a/clang/test/Driver/wasm-toolchain.c b/clang/test/Driver/wasm-toolchain.c
index 91803fe6bc1f2..29a94aeec77a9 100644
--- a/clang/test/Driver/wasm-toolchain.c
+++ b/clang/test/Driver/wasm-toolchain.c
@@ -296,3 +296,10 @@
 // RUN:   | FileCheck -check-prefix=LINK_WASIP2_USE_WASMLD %s
 // LINK_WASIP2_USE_WASMLD: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
 // LINK_WASIP2_USE_WASMLD: wasm-ld{{.*}}" "-m" "wasm32" {{.*}} "[[temp]]" {{.*}}
+
+// Basic `wasm32-linux-muslwali` compile-link test.
+
+// RUN: %clang -### --target=wasm32-linux-muslwali --sysroot=/foo %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=LINK_WALI_BASIC %s
+// LINK_WALI_BASIC: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
+// LINK_WALI_BASIC: wasm-ld{{.*}}" "-L/foo/lib/wasm32-linux-muslwali" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
diff --git a/clang/test/Driver/wasm-toolchain.cpp b/clang/test/Driver/wasm-toolchain.cpp
index ba1c55b33edca..d7ff76cedfd10 100644
--- a/clang/test/Driver/wasm-toolchain.cpp
+++ b/clang/test/Driver/wasm-toolchain.cpp
@@ -86,3 +86,28 @@
 // COMPILE_STDCXX: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
 // COMPILE_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/wasm32-wasi"
 // COMPILE_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include"
+
+// RUN: %clangxx -### --target=wasm32-linux-muslwali --stdlib=libc++ %s 2>&1 \
+// RUN:     --sysroot=%S/Inputs/basic_linux_libcxx_tree/usr \
+// RUN:   | FileCheck -check-prefix=COMPILE_WALI %s
+// COMPILE_WALI: "-cc1"
+// COMPILE_WALI: "-resource-dir" "[[RESOURCE_DIR:[^"]*]]"
+// COMPILE_WALI: "-isysroot" "[[SYSROOT:[^"]+]]"
+// COMPILE_WALI: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/wasm32-linux-muslwali/c++/v1"
+// COMPILE_WALI: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/c++/v1"
+// COMPILE_WALI: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
+// COMPILE_WALI: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/wasm32-linux-muslwali"
+// COMPILE_WALI: "-internal-isystem" "[[SYSROOT:[^"]+]]/include"
+
+// RUN: %clangxx -### --target=wasm32-linux-muslwali --stdlib=libstdc++ %s 2>&1 \
+// RUN:     --sysroot=%S/Inputs/basic_linux_libstdcxx_libcxxv2_tree/usr \
+// RUN:   | FileCheck -check-prefix=COMPILE_WALI_STDCXX %s
+// COMPILE_WALI_STDCXX: "-cc1"
+// COMPILE_WALI_STDCXX: "-resource-dir" "[[RESOURCE_DIR:[^"]*]]"
+// COMPILE_WALI_STDCXX: "-isysroot" "[[SYSROOT:[^"]+]]"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/c++/4.8/wasm32-linux-muslwali"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/c++/4.8"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/c++/4.8/backward"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[RESOURCE_DIR]]{{(/|\\\\)}}include"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include/wasm32-linux-muslwali"
+// COMPILE_WALI_STDCXX: "-internal-isystem" "[[SYSROOT:[^"]+]]/include"
diff --git a/libunwind/src/UnwindRegistersRestore.S b/libunwind/src/UnwindRegistersRestore.S
index 1bcd205be260d..1077d80bc90de 100644
--- a/libunwind/src/UnwindRegistersRestore.S
+++ b/libunwind/src/UnwindRegistersRestore.S
@@ -6,6 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if !defined(__wasm__)
+
 #include "assembly.h"
 
 #define FROM_0_TO_15 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
@@ -20,7 +22,7 @@
   .text
 #endif
 
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__wasm__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__)
 
 #if defined(__i386__)
 DEFINE_LIBUNWIND_FUNCTION(__libunwind_Registers_x86_jumpto)
@@ -1253,7 +1255,8 @@ DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind19Registers_loongarch6jumptoEv)
 
 #endif
 
-#endif /* !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__wasm__) */
+#endif /* !defined(__USING_SJLJ_EXCEPTIONS__) */
 
 NO_EXEC_STACK_DIRECTIVE
 
+#endif /* !defined(__wasm__) */
diff --git a/libunwind/src/UnwindRegistersSave.S b/libunwind/src/UnwindRegistersSave.S
index 5139a551ad245..8bf99ebd942fa 100644
--- a/libunwind/src/UnwindRegistersSave.S
+++ b/libunwind/src/UnwindRegistersSave.S
@@ -6,6 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if !defined(__wasm__)
+
 #include "assembly.h"
 
 #define FROM_0_TO_15 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
@@ -20,7 +22,7 @@
     .text
 #endif
 
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__wasm__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__)
 
 #if defined(__i386__)
 
@@ -1232,6 +1234,8 @@ DEFINE_LIBUNWIND_FUNCTION(__unw_getcontext)
   WEAK_ALIAS(__unw_getcontext, unw_getcontext)
 #endif
 
-#endif /* !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__wasm__) */
+#endif /* !defined(__USING_SJLJ_EXCEPTIONS__) */
 
 NO_EXEC_STACK_DIRECTIVE
+
+#endif /* !defined(__wasm__) */
diff --git a/llvm/include/llvm/TargetParser/Triple.h b/llvm/include/llvm/TargetParser/Triple.h
index ed2e01ccb1e26..110c86bd09051 100644
--- a/llvm/include/llvm/TargetParser/Triple.h
+++ b/llvm/include/llvm/TargetParser/Triple.h
@@ -277,6 +277,7 @@ class Triple {
     MuslF32,
     MuslSF,
     MuslX32,
+    MuslWALI,
     LLVM,
 
     MSVC,
@@ -798,6 +799,12 @@ class Triple {
     return getObjectFormat() == Triple::DXContainer;
   }
 
+  /// Tests whether the target uses WALI Wasm
+  bool isWALI() const {
+    return getArch() == Triple::wasm32 &&
+           isOSLinux() && getEnvironment() == Triple::MuslWALI;
+  }
+
   /// Tests whether the target is the PS4 platform.
   bool isPS4() const {
     return getArch() == Triple::x86_64 &&
@@ -840,6 +847,7 @@ class Triple {
            getEnvironment() == Triple::MuslF32 ||
            getEnvironment() == Triple::MuslSF ||
            getEnvironment() == Triple::MuslX32 ||
+           getEnvironment() == Triple::MuslWALI ||
            getEnvironment() == Triple::OpenHOS || isOSLiteOS();
   }
 
diff --git a/llvm/lib/TargetParser/Triple.cpp b/llvm/lib/TargetParser/Triple.cpp
index ac3626db46ea9..d9f420eccc6f7 100644
--- a/llvm/lib/TargetParser/Triple.cpp
+++ b/llvm/lib/TargetParser/Triple.cpp
@@ -767,6 +767,7 @@ static Triple::EnvironmentType parseEnvironment(StringRef EnvironmentName) {
       .StartsWith("muslf32", Triple::MuslF32)
       .StartsWith("muslsf", Triple::MuslSF)
       .StartsWith("muslx32", Triple::MuslX32)
+      .StartsWith("muslwali", Triple::MuslWALI)
       .StartsWith("musl", Triple::Musl)
       .StartsWith("msvc", Triple::MSVC)
       .StartsWith("itanium", Triple::Itanium)

>From 219e2b2d1e605d1375a8c2b3c48ea15fb6bbd923 Mon Sep 17 00:00:00 2001
From: Arjun Ramesh <arjunr2 at andrew.cmu.edu>
Date: Wed, 8 Oct 2025 22:09:22 -0400
Subject: [PATCH 2/4] Fix formatting

---
 llvm/include/llvm/TargetParser/Triple.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/include/llvm/TargetParser/Triple.h b/llvm/include/llvm/TargetParser/Triple.h
index 110c86bd09051..dc8cd86d2a69a 100644
--- a/llvm/include/llvm/TargetParser/Triple.h
+++ b/llvm/include/llvm/TargetParser/Triple.h
@@ -801,8 +801,8 @@ class Triple {
 
   /// Tests whether the target uses WALI Wasm
   bool isWALI() const {
-    return getArch() == Triple::wasm32 &&
-           isOSLinux() && getEnvironment() == Triple::MuslWALI;
+    return getArch() == Triple::wasm32 && isOSLinux() &&
+           getEnvironment() == Triple::MuslWALI;
   }
 
   /// Tests whether the target is the PS4 platform.

>From fa82638602d398bf2980b9359c6986f6b361e602 Mon Sep 17 00:00:00 2001
From: Arjun Ramesh <arjunr2 at andrew.cmu.edu>
Date: Fri, 10 Oct 2025 06:19:04 -0400
Subject: [PATCH 3/4] Remove extraneous formatting

---
 clang/lib/Basic/Targets.cpp | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 3afa04c812749..a2cc72f68c814 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -453,7 +453,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<FuchsiaTargetInfo<RISCV64TargetInfo>>(Triple,
                                                                     Opts);
     case llvm::Triple::Haiku:
-      return std::make_unique<HaikuTargetInfo<RISCV64TargetInfo>>(Triple, Opts);
+      return std::make_unique<HaikuTargetInfo<RISCV64TargetInfo>>(Triple,
+                                                                  Opts);
     case llvm::Triple::Linux:
       switch (Triple.getEnvironment()) {
       default:
@@ -697,21 +698,21 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
         !Triple.isOSBinFormatWasm())
       return nullptr;
     switch (os) {
-    case llvm::Triple::WASI:
+      case llvm::Triple::WASI:
       return std::make_unique<WASITargetInfo<WebAssembly32TargetInfo>>(Triple,
                                                                        Opts);
-    case llvm::Triple::Emscripten:
+      case llvm::Triple::Emscripten:
       return std::make_unique<EmscriptenTargetInfo<WebAssembly32TargetInfo>>(
           Triple, Opts);
 
-    case llvm::Triple::Linux:
+      case llvm::Triple::Linux:
       return std::make_unique<WALITargetInfo<WebAssembly32TargetInfo>>(Triple,
                                                                        Opts);
-    case llvm::Triple::UnknownOS:
+      case llvm::Triple::UnknownOS:
       return std::make_unique<WebAssemblyOSTargetInfo<WebAssembly32TargetInfo>>(
           Triple, Opts);
-    default:
-      return nullptr;
+      default:
+        return nullptr;
     }
   case llvm::Triple::wasm64:
     if (Triple.getSubArch() != llvm::Triple::NoSubArch ||
@@ -719,17 +720,17 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
         !Triple.isOSBinFormatWasm())
       return nullptr;
     switch (os) {
-    case llvm::Triple::WASI:
+      case llvm::Triple::WASI:
       return std::make_unique<WASITargetInfo<WebAssembly64TargetInfo>>(Triple,
                                                                        Opts);
-    case llvm::Triple::Emscripten:
+      case llvm::Triple::Emscripten:
       return std::make_unique<EmscriptenTargetInfo<WebAssembly64TargetInfo>>(
           Triple, Opts);
-    case llvm::Triple::UnknownOS:
+      case llvm::Triple::UnknownOS:
       return std::make_unique<WebAssemblyOSTargetInfo<WebAssembly64TargetInfo>>(
           Triple, Opts);
-    default:
-      return nullptr;
+      default:
+        return nullptr;
     }
 
   case llvm::Triple::dxil:
@@ -809,7 +810,8 @@ TargetInfo *TargetInfo::CreateTargetInfo(DiagnosticsEngine &Diags,
   }
 
   // Check the TuneCPU name if specified.
-  if (!Opts->TuneCPU.empty() && !Target->isValidTuneCPUName(Opts->TuneCPU)) {
+  if (!Opts->TuneCPU.empty() &&
+      !Target->isValidTuneCPUName(Opts->TuneCPU)) {
     Diags.Report(diag::err_target_unknown_cpu) << Opts->TuneCPU;
     SmallVector<StringRef, 32> ValidList;
     Target->fillValidTuneCPUList(ValidList);

>From c1bc7ce6c27be3dc8738ebf04ba0c1c5c7fb4e99 Mon Sep 17 00:00:00 2001
From: Arjun Ramesh <arjunr2 at andrew.cmu.edu>
Date: Fri, 10 Oct 2025 12:54:34 -0400
Subject: [PATCH 4/4] Fix missing environment support and formatting for CI

---
 clang/lib/Basic/Targets.cpp      | 4 ++--
 llvm/lib/TargetParser/Triple.cpp | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index a2cc72f68c814..b7e8bad4f404b 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -706,8 +706,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
           Triple, Opts);
 
       case llvm::Triple::Linux:
-      return std::make_unique<WALITargetInfo<WebAssembly32TargetInfo>>(Triple,
-                                                                       Opts);
+        return std::make_unique<WALITargetInfo<WebAssembly32TargetInfo>>(Triple,
+                                                                         Opts);
       case llvm::Triple::UnknownOS:
       return std::make_unique<WebAssemblyOSTargetInfo<WebAssembly32TargetInfo>>(
           Triple, Opts);
diff --git a/llvm/lib/TargetParser/Triple.cpp b/llvm/lib/TargetParser/Triple.cpp
index d9f420eccc6f7..e2713c4e250f8 100644
--- a/llvm/lib/TargetParser/Triple.cpp
+++ b/llvm/lib/TargetParser/Triple.cpp
@@ -375,6 +375,7 @@ StringRef Triple::getEnvironmentTypeName(EnvironmentType Kind) {
   case MuslSF:
     return "muslsf";
   case MuslX32: return "muslx32";
+  case MuslWALI: return "muslwali";
   case Simulator: return "simulator";
   case Pixel: return "pixel";
   case Vertex: return "vertex";



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