test: ensure that we dead-strip in the linker

`/OPT:REF` is needed for link to dead strip functions, `/Gy` by itself
is not sufficient.

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile b/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile
index fa147bb..ea15ec8 100644 (file)
--- a/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/dead-strip/Makefile
@@ -8,6 +8,7 @@ ifeq "$(OS)" "Darwin"
     LD_EXTRAS = -Xlinker -dead_strip
 else ifeq "$(OS)" "Windows_NT"
     CFLAGS_EXTRAS += /Gw /Gy
+    LD_EXTRAS = -Xlinker /OPT:REF
 else
     CFLAGS_EXTRAS += -fdata-sections -ffunction-sections
     LD_EXTRAS = -Wl,--gc-sections