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37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
Avoid using native float16 types in Qt's qfloat16
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Using native float16 types may introduce compatibility issues
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in release binaries for Linux platforms.
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See: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=e42d2d2a20f2bb59928bc895ec9f46503a1b5c73
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This patch can be dropped once the minimum required libgcc version
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is updated to 12.x or newer.
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--- a/qtbase/src/corelib/global/qtypes.h
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+++ b/qtbase/src/corelib/global/qtypes.h
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@@ -258,23 +258,8 @@ using qsizetype = QIntegerForSizeof<std::size_t>::Signed;
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// Define a native float16 type
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namespace QtPrivate {
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-#if defined(__STDCPP_FLOAT16_T__)
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-# define QFLOAT16_IS_NATIVE 1
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-using NativeFloat16Type = std::float16_t;
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-#elif defined(Q_CC_CLANG) && defined(__FLT16_MAX__) && 0
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-// disabled due to https://github.com/llvm/llvm-project/issues/56963
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-# define QFLOAT16_IS_NATIVE 1
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-using NativeFloat16Type = decltype(__FLT16_MAX__);
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-#elif defined(Q_CC_GNU_ONLY) && defined(__FLT16_MAX__) && defined(__ARM_FP16_FORMAT_IEEE)
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-# define QFLOAT16_IS_NATIVE 1
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-using NativeFloat16Type = __fp16;
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-#elif defined(Q_CC_GNU_ONLY) && defined(__FLT16_MAX__) && defined(__SSE2__)
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-# define QFLOAT16_IS_NATIVE 1
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-using NativeFloat16Type = _Float16;
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-#else
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# define QFLOAT16_IS_NATIVE 0
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using NativeFloat16Type = void;
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-#endif
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} // QtPrivate
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#endif // __cplusplus
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