Index: include/llvm/ADT/Triple.h
===================================================================
--- include/llvm/ADT/Triple.h	(revision 272991)
+++ include/llvm/ADT/Triple.h	(working copy)
@@ -180,6 +180,8 @@
     EABIHF,
     Android,
     Musl,
+    MuslEABI,
+    MuslEABIHF,
 
     MSVC,
     Itanium,
@@ -565,6 +567,13 @@
   /// Tests whether the target is Android
   bool isAndroid() const { return getEnvironment() == Triple::Android; }
 
+  /// Tests whether the environment is musl-libc
+  bool isMusl() const {
+    return getEnvironment() == Triple::Musl ||
+           getEnvironment() == Triple::MuslEABI ||
+           getEnvironment() == Triple::MuslEABIHF;
+  }
+
   /// Tests whether the target is NVPTX (32- or 64-bit).
   bool isNVPTX() const {
     return getArch() == Triple::nvptx || getArch() == Triple::nvptx64;
Index: lib/Support/Triple.cpp
===================================================================
--- lib/Support/Triple.cpp	(revision 272991)
+++ lib/Support/Triple.cpp	(working copy)
@@ -206,6 +206,8 @@
   case EABIHF: return "eabihf";
   case Android: return "android";
   case Musl: return "musl";
+  case MuslEABI: return "musleabi";
+  case MuslEABIHF: return "musleabihf";
   case MSVC: return "msvc";
   case Itanium: return "itanium";
   case Cygnus: return "cygnus";
@@ -465,6 +467,8 @@
     .StartsWith("code16", Triple::CODE16)
     .StartsWith("gnu", Triple::GNU)
     .StartsWith("android", Triple::Android)
+    .StartsWith("musleabihf", Triple::MuslEABIHF)
+    .StartsWith("musleabi", Triple::MuslEABI)
     .StartsWith("musl", Triple::Musl)
     .StartsWith("msvc", Triple::MSVC)
     .StartsWith("itanium", Triple::Itanium)
Index: unittests/ADT/TripleTest.cpp
===================================================================
--- unittests/ADT/TripleTest.cpp	(revision 272991)
+++ unittests/ADT/TripleTest.cpp	(working copy)
@@ -99,6 +99,18 @@
   EXPECT_EQ(Triple::Linux, T.getOS());
   EXPECT_EQ(Triple::Musl, T.getEnvironment());
 
+  T = Triple("arm-pc-linux-musleabi");
+  EXPECT_EQ(Triple::arm, T.getArch());
+  EXPECT_EQ(Triple::PC, T.getVendor());
+  EXPECT_EQ(Triple::Linux, T.getOS());
+  EXPECT_EQ(Triple::MuslEABI, T.getEnvironment());
+
+  T = Triple("arm-pc-linux-musleabihf");
+  EXPECT_EQ(Triple::arm, T.getArch());
+  EXPECT_EQ(Triple::PC, T.getVendor());
+  EXPECT_EQ(Triple::Linux, T.getOS());
+  EXPECT_EQ(Triple::MuslEABIHF, T.getEnvironment());
+
   T = Triple("powerpc-bgp-linux");
   EXPECT_EQ(Triple::ppc, T.getArch());
   EXPECT_EQ(Triple::BGP, T.getVendor());