[gcov][test] Add mkdir -p %t && cd %t

This allows an alternative lit runner (which does not chdir to %T)
to run within a read-only source tree.

diff --git a/llvm/test/Transforms/GCOVProfiling/global-ctor.ll b/llvm/test/Transforms/GCOVProfiling/global-ctor.ll
index 596a2ad..e90385c 100644 (file)
--- a/llvm/test/Transforms/GCOVProfiling/global-ctor.ll
+++ b/llvm/test/Transforms/GCOVProfiling/global-ctor.ll
@@ -1,5 +1,6 @@
 ;; For a global constructor, _GLOBAL__sub_I_ only has artificial lines.
 ;; Test that we don't instrument those functions.
+; RUN: mkdir -p %t && cd %t
 ; RUN: opt -S -insert-gcov-profiling < %s | FileCheck %s
 ; RUN: opt -S -passes=insert-gcov-profiling < %s | FileCheck %s