From 4c93fe068533cf9568fc1c62fb0b24fd463dfdcf Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 14 Jun 2016 12:45:33 +0000
Subject: [PATCH] Add a Musl environment to the triple.

It will be used in clang.

Patch by Lei Zhang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272660 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/Triple.h    | 1 +
 lib/Support/Triple.cpp       | 2 ++
 unittests/ADT/TripleTest.cpp | 6 ++++++
 3 files changed, 9 insertions(+)

diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
index 5e35e8e0d8a..beb19ffee4a 100644
--- a/include/llvm/ADT/Triple.h
+++ b/include/llvm/ADT/Triple.h
@@ -179,6 +179,7 @@ public:
     EABI,
     EABIHF,
     Android,
+    Musl,
 
     MSVC,
     Itanium,
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 1967fac2600..c792fcbc34d 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -205,6 +205,7 @@ const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
   case EABI: return "eabi";
   case EABIHF: return "eabihf";
   case Android: return "android";
+  case Musl: return "musl";
   case MSVC: return "msvc";
   case Itanium: return "itanium";
   case Cygnus: return "cygnus";
@@ -464,6 +465,7 @@ static Triple::EnvironmentType parseEnvironment(StringRef EnvironmentName) {
     .StartsWith("code16", Triple::CODE16)
     .StartsWith("gnu", Triple::GNU)
     .StartsWith("android", Triple::Android)
+    .StartsWith("musl", Triple::Musl)
     .StartsWith("msvc", Triple::MSVC)
     .StartsWith("itanium", Triple::Itanium)
     .StartsWith("cygnus", Triple::Cygnus)
diff --git a/unittests/ADT/TripleTest.cpp b/unittests/ADT/TripleTest.cpp
index e3835422433..c8602228faf 100644
--- a/unittests/ADT/TripleTest.cpp
+++ b/unittests/ADT/TripleTest.cpp
@@ -93,6 +93,12 @@ TEST(TripleTest, ParsedIDs) {
   EXPECT_EQ(Triple::Linux, T.getOS());
   EXPECT_EQ(Triple::GNU, T.getEnvironment());
 
+  T = Triple("x86_64-pc-linux-musl");
+  EXPECT_EQ(Triple::x86_64, T.getArch());
+  EXPECT_EQ(Triple::PC, T.getVendor());
+  EXPECT_EQ(Triple::Linux, T.getOS());
+  EXPECT_EQ(Triple::Musl, T.getEnvironment());
+
   T = Triple("powerpc-bgp-linux");
   EXPECT_EQ(Triple::ppc, T.getArch());
   EXPECT_EQ(Triple::BGP, T.getVendor());
-- 
2.11.0