fabi/Xenia-Canary
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Adding --enable_haswell_instructions=false to disable modern instructions.

Browse Source
This commit is contained in:
Ben Vanik
2015-05-11 21:42:10 -07:00
parent fc02a0c404
commit ad7efa964f
3 changed files with 60 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/xenia/cpu/backend/x64/x64_emitter.cc
View File

@@ -9,6 +9,8 @@
#include "xenia/cpu/backend/x64/x64_emitter.h"
#include <gflags/gflags.h>
#include "xenia/base/assert.h"
#include "xenia/base/atomic.h"
#include "xenia/base/logging.h"
@@ -28,6 +30,10 @@
#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.");
namespace xe {
namespace cpu {
namespace backend {
@@ -65,11 +71,19 @@ X64Emitter::X64Emitter(X64Backend* backend, XbyakAllocator* allocator)
backend_(backend),
code_cache_(backend->code_cache()),
allocator_(allocator),
feature_flags_(0),
current_instr_(0),
debug_info_(nullptr),
debug_info_flags_(0),
source_map_count_(0),
stack_size_(0) {}
stack_size_(0) {
if (FLAGS_enable_haswell_instructions) {
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tAVX2) ? kX64EmitAVX2 : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tFMA) ? kX64EmitFMA : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tLZCNT) ? kX64EmitLZCNT : 0;
feature_flags_ |= cpu_.has(Xbyak::util::Cpu::tBMI2) ? kX64EmitBMI2 : 0;
}
}
X64Emitter::~X64Emitter() = default;