[clang] [openmp] [OpenMP][FIX] Allocate per launch memory for GPU team reductions (PR #70752)

[Shilei Tian via cfe-commits]

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@@ -194,6 +191,9 @@ int32_t __kmpc_nvptx_teams_reduce_nowait_v2(
     ThreadId = 0;
   }
 
+  uint32_t &IterCnt = state::getKernelLaunchEnvironment().ReductionIterCnt;
+  uint32_t &Cnt = state::getKernelLaunchEnvironment().ReductionCnt;
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shiltian wrote:

These two variables seem not used anywhere else.

https://github.com/llvm/llvm-project/pull/70752