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Adding fallback for pre-MOVBE-supporting processors.

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This commit is contained in:
Ben Vanik
2015-06-16 20:05:55 -07:00
parent 75206149ab
commit c34db170f5
7 changed files with 62 additions and 14 deletions
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8
src/xenia/cpu/backend/x64/x64_emitter.cc
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@@ -31,10 +31,6 @@
#include "xenia/cpu/thread_state.h"
#include "xenia/profiling.h"
DEFINE_bool(
enable_haswell_instructions, true,
"Uses the AVX2/FMA/etc instructions on Haswell processors, if available.");
DEFINE_bool(enable_debugprint_log, false,
"Log debugprint traps to the active debugger");
@@ -87,10 +83,10 @@ X64Emitter::X64Emitter(X64Backend* backend, XbyakAllocator* allocator)
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tLZCNT) ? kX64EmitLZCNT : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tBMI2) ? kX64EmitBMI2 : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tF16C) ? kX64EmitF16C : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tMOVBE) ? kX64EmitMovbe : 0;
}
if (!cpu_.has(Xbyak::util::Cpu::tAVX) ||
!cpu_.has(Xbyak::util::Cpu::tMOVBE)) {
if (!cpu_.has(Xbyak::util::Cpu::tAVX)) {
XEFATAL(
"Your CPU is too old to support Xenia. See the FAQ for system "
"requirements at http://xenia.jp");