shithub: dav1d

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ref: 289ca2ceaef841babb7ec3a302e0c7c625a54899
parent: 010eae8b2d6ad8713df22de7e7603fb30d4d8ceb
author: Victorien Le Couviour--Tuffet <psilokos@twoorioles.com>
date: Mon Jan 20 05:35:42 EST 2020

x86inc: save xmm_regs_used in spill_xmm for non-win64

This allows for AVX-512 code to issue vzeroupper automatically in RET,
when not specified in cglobal but later on, along WIN64_SPILL_XMM.

--- a/src/ext/x86/x86inc.asm

+++ b/src/ext/x86/x86inc.asm

@@ -651,8 +651,10 @@

 %if WIN64 == 0

     %macro WIN64_SPILL_XMM 1

+        %assign xmm_regs_used %1

     %endmacro

     %macro WIN64_RESTORE_XMM 0

+        %assign xmm_regs_used 0

     %endmacro

     %macro WIN64_PUSH_XMM 0

     %endmacro