Modefied xfail test into normal test with verifier check line.

Author: vg0204

llvm/test/CodeGen/AMDGPU/spill-partial-csr-sgpr-live-ins.mir

@@ -1,12 +1,11 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
-# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=si-lower-sgpr-spills -o - %s | FileCheck %s
-# XFAIL: *
+# RUN: not --crash llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=si-lower-sgpr-spills %s -o /dev/null 2>&1 | FileCheck -check-prefix=VERIFIER %s
 
-# FIXME : Currently, MRI's liveIn check for regiters does not take corresponding live-in's sub-registers in account. As a result
-# in SILowerSGPRSpills, the SubReg spill gets marked KILLED eventhough its SuperReg is in function Live-ins. This causes machine
+# FIXME : Currently, MRI's liveIn check for registers does not take the corresponding live-in's sub-registers into account. As a result
+# in SILowerSGPRSpills, the SubReg spill gets marked KILLED even though its SuperReg is in the function Live-ins. This causes machine
 # verifier to now fail at direct usage of that SubReg, which intially should not be any problem before adding spill.
 
-# CHECK: *** Bad machine code: Using an undefined physical register ***
+# VERIFIER: *** Bad machine code: Using an undefined physical register ***
 
 ---
 name: spill_partial_live_csr_sgpr_argument_test_1