[OpenMP] Fix sign comparison warnings from GCC

New affinity patch introduced legitimate sign-compare warnings that
clang doesn't report but GCC-10 does. This removes the warnings by
changing two variables types to unsigned.

Differential Revision: https://reviews.llvm.org/D95818

diff --git a/openmp/runtime/src/kmp_affinity.cpp b/openmp/runtime/src/kmp_affinity.cpp
index 0161aca..a94dbd1 100644 (file)
--- a/openmp/runtime/src/kmp_affinity.cpp
+++ b/openmp/runtime/src/kmp_affinity.cpp
@@ -109,8 +109,8 @@ static int __kmp_affinity_remove_radix_one_levels(AddrUnsPair *addrP, int nTh,
     }
     bool radix1 = true;
     bool all_same = true;
-    int id1 = addrP[0].first.labels[top_index1];
-    int id2 = addrP[0].first.labels[top_index2];
+    unsigned id1 = addrP[0].first.labels[top_index1];
+    unsigned id2 = addrP[0].first.labels[top_index2];
     int pref1 = preference[type1];
     int pref2 = preference[type2];
     for (int hwidx = 1; hwidx < nTh; ++hwidx) {