[AMDGPU] SelectionDAG divergence tracking. test_isel_single_lane.ll corrected.

Author: alex-t

llvm/test/CodeGen/AMDGPU/test_isel_single_lane.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
-; RUN: llc -march=amdgcn -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
+; RUN: llc -mtriple=amdgcn -mcpu=gfx1200 < %s | FileCheck -check-prefix=GCN %s
 
 declare i32 @llvm.amdgcn.atomic.cond.sub.u32.p1(ptr addrspace(1), i32)