LibDriver: implement /libpath and $LIB; ignore /ignore and /machine.

llvm-svn: 240203
diff --git a/llvm/test/LibDriver/libpath.test b/llvm/test/LibDriver/libpath.test
new file mode 100644
index 0000000..22d4f58
--- /dev/null
+++ b/llvm/test/LibDriver/libpath.test
@@ -0,0 +1,15 @@
+RUN: mkdir -p %T/a %T/b
+RUN: llvm-mc -triple=x86_64-pc-windows-msvc -filetype=obj -o %T/a/foo.obj %S/Inputs/a.s
+RUN: llvm-mc -triple=x86_64-pc-windows-msvc -filetype=obj -o %T/b/foo.obj %S/Inputs/b.s
+
+RUN: env LIB=%T/a\;%T/b llvm-lib /out:%t1.lib foo.obj
+RUN: llvm-nm %t1.lib | FileCheck --check-prefix=A %s
+
+RUN: llvm-lib /out:%t2.lib /libpath:%T/a /libpath:%T/b foo.obj
+RUN: llvm-nm %t2.lib | FileCheck --check-prefix=A %s
+
+RUN: env LIB=%T/a llvm-lib /libpath:%T/b /out:%t3.lib foo.obj
+RUN: llvm-nm %t3.lib | FileCheck --check-prefix=B %s
+
+A: T a
+B: T b