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From: | Richard Henderson |
Subject: | Re: [Qemu-devel] [PATCH v2 11/20] fpu/softfloat: re-factor add/sub |
Date: | Fri, 12 Jan 2018 10:30:03 -0800 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 |
On 01/12/2018 07:57 AM, Peter Maydell wrote: > I see we're passing and returning decomposed_parts structs everywhere > rather than pointers to them. How well does that compile? (I guess > everything ends up inlining...) For the x86_64 abi at least, the structure (as defined with bitfields) is 128 bits and is passed and returned in registers. I believe the same to be true for the aarch64 abi. I'd have to do some research to determine what happens for the other 64-bit hosts. r~
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