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arm : Don’t use vcmp.f64 for testing for an all-zeros register
16 novembre 2016, par Martin Storsjöarm: Don't use vcmp.f64 for testing for an all-zeros register On iOS, vcmp.f64 can behave as if the register was zero, if the register (interpreted as a f64), was a denormal number. The vcmp.f64 (and other VFP instructions) will trap to the kernel (which is supposed to implement the FP operation, which it apparently doesn't do properly on iOS) if the value is a denormal. If this happens, the whole comparison ends up way more costly.
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checkasm : arm/aarch64 : Fix the amount of space reserved for stack parameters
14 novembre 2016, par Martin Storsjöcheckasm: arm/aarch64: Fix the amount of space reserved for stack parameters Even if MAX_ARGS - 2 (for arm) or MAX_ARGS - 6 (for aarch64) parameters are passed on the stack to checkasm_checked_call, we actually only need to store MAX_ARGS - 4 (for arm) or MAX_ARGS - 8 (for aarch64) parameters on the stack when calling the tested function.
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checkasm : arm : preserve the stack alignment in x264_checkasm_checked_call
14 novembre 2016, par Janne Grunaucheckasm: arm: preserve the stack alignment in x264_checkasm_checked_call The stack used by x264_checkasm_checked_call_neon was a multiple of 4 when the checked function is called. AAPCS requires a double word (8 byte) aligned stack public interfaces. Since both calls are public interfaces the stack is misaligned when the checked is called. This can cause issues if code called within this (which includes the C implementations) relies on the stack alignment.
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ppc : AltiVec sub8x8_dct_dc
14 novembre 2016, par Alexandra Hájková -
ppc : AltiVec add8x8_idct_dc
14 novembre 2016, par Alexandra Hájková
