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Fixes IBM XLC behavior with uint128 fallback #2985

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merged 3 commits into from
Jul 22, 2022
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Fixes IBM XLC behavior with uint128 fallback #2985

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987e168
Fixes IBM XLC behavior with uint128 fallback
fbusato Jul 14, 2022
043c1e4
Replace legacy xlc with clang-based xlc
fbusato Jul 19, 2022
1ade10c
simplify xlc intrinsics handling
fbusato Jul 22, 2022
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4 changes: 2 additions & 2 deletions include/fmt/format.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
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