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Fixes IBM XLC behavior with uint128 fallback (#2985)

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* 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>
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Federico 2022-07-22 13:49:17 -07:00 committed by GitHub
parent 00adc7120d
commit bc5c7c50fd
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1 changed files with 2 additions and 2 deletions
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4
include/fmt/format.h
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@ -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;