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conversions: restore optimization workaround

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The refactoring of the conversions test dropped the workaround added
by 59a12047a ("Fix for test_conversions failure with Clang build on
Linux #1057 (#1062)", 2021-05-11).

Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
This commit is contained in:
Sven van Haastregt
2023-07-14 13:41:49 +01:00
parent b32d566bca
commit 19bddc90e4
1 changed files with 14 additions and 3 deletions
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17
test_conformance/conversions/conversions_data_info.h
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@@ -408,7 +408,9 @@ void DataInfoSpec<InType, OutType>::conv(OutType *out, InType *in)
// always convert to +0.0
}
#else
*out = (*in == 0 ? 0.0 : (OutType)*in);
// Use volatile to prevent optimization by Clang compiler
volatile InType vi = *in;
*out = (vi == 0 ? 0.0 : static_cast<OutType>(vi));
#endif
}
else if (std::is_same<cl_float, OutType>::value)
@@ -467,12 +469,21 @@ void DataInfoSpec<InType, OutType>::conv(OutType *out, InType *in)
else
{
if (std::is_same<cl_float, OutType>::value)
*out = (*in == 0 ? 0.f : *in); // Per IEEE-754-2008 5.4.1, 0's
// always convert to +0.0
{
// Use volatile to prevent optimization by Clang compiler
volatile InType vi = *in;
// Per IEEE-754-2008 5.4.1, 0 always converts to +0.0
*out = (vi == 0 ? 0.0f : vi);
}
else if (std::is_same<cl_double, OutType>::value)
{
// Per IEEE-754-2008 5.4.1, 0 always converts to +0.0
*out = (*in == 0 ? 0.0 : *in);
}
else
{
*out = (OutType)*in;
}
}
}