// RUN: %clang_cl /imsvcmyincludedir -### -- %s 2>&1 | FileCheck -check-prefix=SLASH_imsvc %s
// RUN: %clang_cl /imsvc myincludedir -### -- %s 2>&1 | FileCheck -check-prefix=SLASH_imsvc %s
// Clang's resource header directory should be first:
-// SLASH_imsvc: "-internal-isystem" "{{[^"]*}}lib{{/|\\\\}}clang{{[^"]*}}include"
+// SLASH_imsvc: "-internal-isystem" "{{[^"]*}}lib{{(64)?/|\\\\}}clang{{[^"]*}}include"
// SLASH_imsvc: "-internal-isystem" "myincludedir"
// RUN: %clang_cl /J -### -- %s 2>&1 | FileCheck -check-prefix=J %s