Fixes IBM XLC behavior with uint128 fallback (#2985)

* Fixes IBM XLC behavior with uint128 fallback * Replace legacy xlc with clang-based xlc * simplify xlc intrinsics handling Co-authored-by: Federico Busato <fbusato@nvidia.com>
fmtlib · Jul 22, 2022 · bc5c7c5 · bc5c7c5
1 parent 00adc71
commit bc5c7c5
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/include/fmt/format.h b/include/fmt/format.h
@@ -391,11 +391,11 @@ class uint128_fallback {
       hi_ += (lo_ < n ? 1 : 0);
       return *this;
     }
-#if FMT_HAS_BUILTIN(__builtin_addcll)
+#if FMT_HAS_BUILTIN(__builtin_addcll) && !defined(__ibmxl__)
     unsigned long long carry;
     lo_ = __builtin_addcll(lo_, n, 0, &carry);
     hi_ += carry;
-#elif FMT_HAS_BUILTIN(__builtin_ia32_addcarryx_u64)
+#elif FMT_HAS_BUILTIN(__builtin_ia32_addcarryx_u64) && !defined(__ibmxl__)
     unsigned long long result;
     auto carry = __builtin_ia32_addcarryx_u64(0, lo_, n, &result);
     lo_ = result;