search for: xmm1b

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2012 Jan 09
3
[LLVMdev] Calling conventions for YMM registers on AVX
On Jan 9, 2012, at 10:00 AM, Jakob Stoklund Olesen wrote: > > On Jan 8, 2012, at 11:18 PM, Demikhovsky, Elena wrote: > >> I'll explain what we see in the code. >> 1. The caller saves XMM registers across the call if needed (according to DEFS definition). >> YMMs are not in the set, so caller does not take care. > > This is not how the register allocator
2012 Jan 10
0
[LLVMdev] Calling conventions for YMM registers on AVX
..., that's right. We defined the upper part of YMM like this // XMM Registers, used by the various SSE instruction set extensions. // Theses are actually only needed for implementing the Win64 CC with AVX. def XMM0b: Register<"xmm0b">, DwarfRegNum<[17, 21, 21]>; def XMM1b: Register<"xmm1b">, DwarfRegNum<[18, 22, 22]>; def XMM2b: Register<"xmm2b">, DwarfRegNum<[19, 23, 23]>; def XMM3b: Register<"xmm3b">, DwarfRegNum<[20, 24, 24]>; def XMM4b: Register<"xmm4b">, DwarfRegNum<[21,...