On Mon, 14 Aug 2017, Pekka Jääskeläinen wrote: > Both the inputs and outputs must be flushed to zero in the HSAIL’s > ‘ftz’ semantics.
Presumably this means that constant folding needs to know about those semantics, both for operations with a subnormal floating-point argument (whether or not the output is floating point, or floating point in the same format), and those with such a result? Can assignments copy subnormals without converting them to zero? Should comparisons flush input subnormals to zero before comparing? Should conversions e.g. from float to double convert a float subnormal input to zero? -- Joseph S. Myers jos...@codesourcery.com
