configure: Document --disable-slirp option in --help
The --disable-slirp option was undocumented; add it to configure's--help output.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
target-arm/exec.h: Remove unused #define of M0
Remove a preprocessor #define which is never used.
target-arm: Signal Underflow when denormal flushed to zero on output
On ARM the architecture mandates that when an output denormal is flushed tozero we must set the FPSCR UFC (underflow) bit, so map softfloat'sfloat_flag_output_denormal accordingly.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>...
target-arm: Use correct float status for Neon int-float conversions
The Neon versions of int-float conversions must use the "standard FPSCR" rather than the default FPSCR. Implement this by having the helperfunctions take a pointer to the appropriate float_status value rather...
target-arm: Signal InvalidOp for Neon GE and GT compares of QNaN
If the input to a Neon float comparison is a quiet NaN, the ARM ARMspecifies that we should raise InvalidOp if the comparison is GE or GTbut not for EQ. (Signaling NaNs raise InvalidOp regardless). This means...
target-arm: Signal InputDenormal for VRECPE, VRSQRTE, VRECPS, VRSQRTS
The helpers for VRECPE.F32, VSQRTE.F32, VRECPS and VRSQRTS handle denormalsas special cases, so we must set the InputDenormal exception flag ourselves.
softfloat: Add new flag for when denormal result is flushed to zero
Add a new float_flag_output_denormal which is set when the resultof a floating point operation would be denormal but is flushed tozero because we are in flush_to_zero mode. This is necessary because...
target-arm: Don't set FP exceptions in recip, recip_sqrt estimate fns
The functions which do the core estimation algorithms for the VRSQRTEand VRECPE instructions should not set floating point exception flags,so use a local fp status for doing these calculations....
tcg: don't keep dead outputs in registers
If an op with dead outputs is not removed, because it has side effectsor has multiple output and only one dead, mark the registers as deadinstead of saving them. This avoid a few register spills on TCG targetswith low register count, especially with div2 and mul2 ops, or when a...
tcg: mark dead output argument in op_dead_args
If an op is not removed and has dead output arguments, mark itin op_dead_args similarly to what is done for input arguments.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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