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target/ppc: Use env->fp_status in helper_compute_fprf functions

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In the helper_compute_fprf functions, we pass a dummy float_status
in to the is_signaling_nan() function. This is unnecessary, because
we have convenient access to the CPU env pointer here and that
is already set up with the correct values for the snan_bit_is_one
and no_signaling_nans config settings. is_signaling_nan() doesn't
ever update the fp_status with any exception flags, so there is
no reason not to use env->fp_status here.

Use env->fp_status instead of the dummy fp_status.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241202131347.498124-34-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2024-12-11 15:31:03 +00:00
parent 5edd92d6c3
commit 46eb7b92db
1 changed files with 1 additions and 2 deletions
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3
target/ppc/fpu_helper.c
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@ -155,8 +155,7 @@ void helper_compute_fprf_##tp(CPUPPCState *env, tp arg) \
} else if (tp##_is_infinity(arg)) { \
fprf = neg ? 0x09 << FPSCR_FPRF : 0x05 << FPSCR_FPRF; \
} else { \
float_status dummy = { }; /* snan_bit_is_one = 0 */ \
if (tp##_is_signaling_nan(arg, &dummy)) { \
if (tp##_is_signaling_nan(arg, &env->fp_status)) { \
fprf = 0x00 << FPSCR_FPRF; \
} else { \
fprf = 0x11 << FPSCR_FPRF; \