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| author | Peter Maydell <peter.maydell@linaro.org> | 2025-02-24 11:15:23 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-02-25 15:32:57 +0000 |
| commit | c5d4173fcf04f6de9b9bb0959d1fdfc08254381a (patch) | |
| tree | fc6a508031632af4cedc59ce60ea5e7319f5f745 | |
| parent | 3abed4d0eace62910e90c206cb9d5741c6095b12 (diff) | |
| download | qemu-c5d4173fcf04f6de9b9bb0959d1fdfc08254381a.zip qemu-c5d4173fcf04f6de9b9bb0959d1fdfc08254381a.tar.gz qemu-c5d4173fcf04f6de9b9bb0959d1fdfc08254381a.tar.bz2 | |
fpu: Don't compile-time disable hardfloat for PPC targets
We happen to know that for the PPC target the FP status flags (and in
particular float_flag_inexact) will always be cleared before a
floating point operation, and so can_use_fpu() will always return
false. So we speed things up a little by forcing QEMU_NO_HARDFLOAT
to true on that target.
We would like to build softfloat once for all targets; that means
removing target-specific ifdefs. Remove the check for TARGET_PPC;
this won't change behaviour because can_use_fpu() will see that
float_flag_inexact is clear and take the softfloat path anyway.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250224111524.1101196-12-peter.maydell@linaro.org
Message-id: 20250217125055.160887-10-peter.maydell@linaro.org
| -rw-r--r-- | fpu/softfloat.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index b299cfa..b38eea8 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -220,11 +220,9 @@ GEN_INPUT_FLUSH3(float64_input_flush3, float64) * the use of hardfloat, since hardfloat relies on the inexact flag being * already set. */ -#if defined(TARGET_PPC) || defined(__FAST_MATH__) # if defined(__FAST_MATH__) # warning disabling hardfloat due to -ffast-math: hardfloat requires an exact \ IEEE implementation -# endif # define QEMU_NO_HARDFLOAT 1 # define QEMU_SOFTFLOAT_ATTR QEMU_FLATTEN #else |