dynarmic: Inline exclusive memory accesses

Inlines implementation of exclusive instructions into JITted code,
improving performance of applications relying heavily on these
instructions.

We also fastmem these instructions for additional speed, with
support for appropriate recompilation on fastmem failure.

An unsafe optimization to disable the intercore global_monitor is also
provided, should one wish to rely solely on cmpxchg semantics for
safety.

See also: merryhime/dynarmic#664

2 files changed, 16 insertions, 0 deletions

diff --git a/src/yuzu_cmd/config.cpp b/src/yuzu_cmd/config.cpp
index 30963a8bb..b74411c84 100644
--- a/src/yuzu_cmd/config.cpp
+++ b/src/yuzu_cmd/config.cpp
@@ -280,11 +280,14 @@ void Config::ReadValues() {
     ReadSetting("Cpu", Settings::values.cpuopt_misc_ir);
     ReadSetting("Cpu", Settings::values.cpuopt_reduce_misalign_checks);
     ReadSetting("Cpu", Settings::values.cpuopt_fastmem);
+    ReadSetting("Cpu", Settings::values.cpuopt_fastmem_exclusives);
+    ReadSetting("Cpu", Settings::values.cpuopt_recompile_exclusives);
     ReadSetting("Cpu", Settings::values.cpuopt_unsafe_unfuse_fma);
     ReadSetting("Cpu", Settings::values.cpuopt_unsafe_reduce_fp_error);
     ReadSetting("Cpu", Settings::values.cpuopt_unsafe_ignore_standard_fpcr);
     ReadSetting("Cpu", Settings::values.cpuopt_unsafe_inaccurate_nan);
     ReadSetting("Cpu", Settings::values.cpuopt_unsafe_fastmem_check);
+    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_ignore_global_monitor);
 
     // Renderer
     ReadSetting("Renderer", Settings::values.renderer_backend);
diff --git a/src/yuzu_cmd/default_ini.h b/src/yuzu_cmd/default_ini.h
index 6d613bf7a..3ac1440c9 100644
--- a/src/yuzu_cmd/default_ini.h
+++ b/src/yuzu_cmd/default_ini.h
@@ -174,6 +174,14 @@ cpuopt_reduce_misalign_checks =
 # 0: Disabled, 1 (default): Enabled
 cpuopt_fastmem =
 
+# Enable Host MMU Emulation for exclusive memory instructions (faster guest memory access)
+# 0: Disabled, 1 (default): Enabled
+cpuopt_fastmem_exclusives =
+
+# Enable fallback on failure of fastmem of exclusive memory instructions (faster guest memory access)
+# 0: Disabled, 1 (default): Enabled
+cpuopt_recompile_exclusives =
+
 # Enable unfuse FMA (improve performance on CPUs without FMA)
 # Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
 # 0: Disabled, 1 (default): Enabled
@@ -199,6 +207,11 @@ cpuopt_unsafe_inaccurate_nan =
 # 0: Disabled, 1 (default): Enabled
 cpuopt_unsafe_fastmem_check =
 
+# Enable faster exclusive instructions
+# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
+# 0: Disabled, 1 (default): Enabled
+cpuopt_unsafe_ignore_global_monitor =
+
 [Renderer]
 # Which backend API to use.
 # 0 (default): OpenGL, 1: Vulkan