Re: [PATCH 2/2] tests/tcg/x86_64/fma: Test some x86 fused-multiply-add cases

[Richard Henderson]

On 1/16/25 03:25, Peter Maydell wrote:
> Add a test case which tests some corner case behaviour of
> fused-multiply-add on x86:
>   * 0 * Inf + SNaN should raise Invalid
>   * 0 * Inf + QNaN shouldh not raise Invalid
>   * tininess should be detected after rounding
>
> There is also one currently-disabled test case:
>   * flush-to-zero should be done after rounding
>
> This is disabled because QEMU's emulation currently does this
> incorrectly (and so would fail the test).  The test case is kept in
> but disabled, as the justification for why the test running harness
> has support for testing both with and without FTZ set.
>
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   tests/tcg/x86_64/fma.c           | 109 +++++++++++++++++++++++++++++++
>   tests/tcg/x86_64/Makefile.target |   1 +
>   2 files changed, 110 insertions(+)
>   create mode 100644 tests/tcg/x86_64/fma.c

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~