implicit-check-not=DBG_PHI

Author: OCHyams

llvm/test/DebugInfo/X86/branch-folder-dbg.mir

@@ -1,4 +1,5 @@
-# RUN: llc %s --start-before=branch-folder --stop-after=branch-folder -o - | FileCheck %s
+# RUN: llc %s --start-before=branch-folder --stop-after=branch-folder -o - \
+# RUN: | FileCheck %s --implicit-check-not=DBG_PHI
 
 ## Check that common instructions hoisted from `if.then` and `if.else` into
 ## common pred `entry` get merged debug locations. The debug instructions from
@@ -7,7 +8,7 @@
 ## The MIR debug instructions have been modified by hand in order to check they
 ## can be killed.
 ##
-## Check DBG_PHIs are deleted rather than hoisted.
+## Check DBG_PHIs are deleted rather than hoisted (implicit-check-not).
 
 # CHECK: bb.0
 # CHECK:      CALL64pcrel32 @f, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax