[test] Tweak driver test from r353917 and r353922 to pass with a nondefault CLANG_DEFAULT_LINKER

Force -fuse-ld=ld, as some other tests in the same file do.

Loosen the regex matching the linker tool name as well, as this
can end up being <triple>-ld in case such a named tool exists.

llvm-svn: 353946

Author: mstorsjo

clang/test/Driver/instrprof-ld.c

@@ -123,9 +123,9 @@
 // CHECK-WINDOWS-X86-64: "{{.*}}clang_rt.profile-x86_64.lib"
 //
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
-// RUN:     -target x86_64-mingw32 -fprofile-instr-generate \
+// RUN:     -target x86_64-mingw32 -fprofile-instr-generate -fuse-ld=ld \
 // RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=CHECK-MINGW-X86-64 %s
 //
-// CHECK-MINGW-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
+// CHECK-MINGW-X86-64: "{{(.*[^.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-MINGW-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}windows{{/|\\\\}}libclang_rt.profile-x86_64.a"