diff --git a/llvm/lib/Support/Triple.cpp b/llvm/lib/Support/Triple.cpp
--- a/llvm/lib/Support/Triple.cpp
+++ b/llvm/lib/Support/Triple.cpp
@@ -337,12 +337,14 @@
     .Case("sparc", sparc)
     .Case("sparcel", sparcel)
     .Case("sparcv9", sparcv9)
+    .Case("s390x", systemz)
     .Case("systemz", systemz)
     .Case("tce", tce)
     .Case("tcele", tcele)
     .Case("thumb", thumb)
     .Case("thumbeb", thumbeb)
     .Case("x86", x86)
+    .Case("i386", x86)
     .Case("x86-64", x86_64)
     .Case("xcore", xcore)
     .Case("nvptx", nvptx)