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SPU LLVM: Use get_known_bits() in SHUFB

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Eladash 2023-07-18 20:56:10 +03:00 • committed by Elad Ashkenazi
parent ee7475a9d4
commit 50dad6801b
1 changed files with 7 additions and 2 deletions
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9
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -8572,8 +8572,13 @@ public:
return; return;
} }
// (TODO: implement via known-bits-lookup) Check whether shuffle mask doesn't contain fixed value selectors // Check whether shuffle mask doesn't contain fixed value selectors
const auto [perm_only, dummy1] = match_expr(c, match<u8[16]>() & 31); bool perm_only = false;
if (auto k = get_known_bits(c); !!(k.Zero & 0x80))
{
perm_only = true;
}
const auto a = get_vr<u8[16]>(op.ra); const auto a = get_vr<u8[16]>(op.ra);
const auto b = get_vr<u8[16]>(op.rb); const auto b = get_vr<u8[16]>(op.rb);