jit64: add regcache option IsBound

Lots of x86 instructions are different on memory vs registers. So to generate code, we often have to check if a ppc register is already bound to a x86 register.
dolphin-emu · Nov 21, 2013 · 011fe86 · 011fe86
1 parent 286b611
commit 011fe86
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitRegCache.cpp b/Source/Core/Core/Src/PowerPC/Jit64/JitRegCache.cpp
@@ -166,7 +166,7 @@ int RegCache::SanityCheck() const
 
 void RegCache::DiscardRegContentsIfCached(int preg)
 {
-	if (regs[preg].away && regs[preg].location.IsSimpleReg())
+	if (IsBound(preg))
 	{
 		X64Reg xr = regs[preg].location.GetSimpleReg();
 		xregs[xr].free = true;

diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitRegCache.h b/Source/Core/Core/Src/PowerPC/Jit64/JitRegCache.h
@@ -93,7 +93,7 @@ class RegCache
 	const OpArg &R(int preg) const {return regs[preg].location;}
 	X64Reg RX(int preg) const
 	{
-		if (regs[preg].away && regs[preg].location.IsSimpleReg())
+		if (IsBound(preg))
 			return regs[preg].location.GetSimpleReg();
 		PanicAlert("Not so simple - %i", preg);
 		return (X64Reg)-1;
@@ -111,6 +111,11 @@ class RegCache
 		return xregs[xreg].free && !xlocks[xreg];
 	}
 
+	bool IsBound(int preg) const
+	{
+		return regs[preg].away && regs[preg].location.IsSimpleReg();
+	}
+
 
 	X64Reg GetFreeXReg();