From 8edd66c662aaa38a7c27cb1d78d5fa6c2f2c70c2 Mon Sep 17 00:00:00 2001
From: ramapcsx2 <ramapcsx2@a6443dda-0b58-4228-96e9-037be469359c>
Date: Mon, 15 Sep 2008 08:01:11 +0000
Subject: [PATCH] Added hacks to VU interpreters, only accessible via source.
 Note: these hacks are more like a reference, they help show what makes
 interpreters so slow. Most games break with these enabled, but my testing
 game is fine. Speedup in it is about 30%.

Note2: I'll remove these hacks, once interpreters are fast enough.

git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@123 a6443dda-0b58-4228-96e9-037be469359c
---
 pcsx2/VU.h       | 4 ++++
 pcsx2/VU0micro.c | 4 ++++
 pcsx2/VU1micro.c | 4 ++++
 pcsx2/VUops.c    | 8 +++++++-
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/pcsx2/VU.h b/pcsx2/VU.h
index eec3ae2ef8..6076e2e0f5 100644
--- a/pcsx2/VU.h
+++ b/pcsx2/VU.h
@@ -36,6 +36,10 @@
 #define REG_VPU_STAT	29
 #define REG_CMSAR1		31
 
+//interpreter hacks, WIP
+//#define INT_VUSTALLHACK //some games work without those, big speedup
+//#define INT_VUDOUBLEHACK
+
 enum VUStatus {
 	VU_Ready = 0,
 	VU_Run   = 1,
diff --git a/pcsx2/VU0micro.c b/pcsx2/VU0micro.c
index 84255f060b..533b38d737 100644
--- a/pcsx2/VU0micro.c
+++ b/pcsx2/VU0micro.c
@@ -273,7 +273,9 @@ void _vu0Exec(VURegs* VU) {
 
 	VU->code = ptr[1]; 
 	VU0regs_UPPER_OPCODE[VU->code & 0x3f](&uregs);
+#ifndef INT_VUSTALLHACK
 	_vuTestUpperStalls(VU, &uregs);
+#endif
 
 	/* check upper flags */ 
 	if (ptr[1] & 0x80000000) { /* I flag */ 
@@ -284,7 +286,9 @@ void _vu0Exec(VURegs* VU) {
 	} else {
 		VU->code = ptr[0];
 		VU0regs_LOWER_OPCODE[VU->code >> 25](&lregs);
+#ifndef INT_VUSTALLHACK
 		_vuTestLowerStalls(VU, &lregs);
+#endif
 
 		vu0branch = lregs.pipe == VUPIPE_BRANCH;
 
diff --git a/pcsx2/VU1micro.c b/pcsx2/VU1micro.c
index ea31e9225b..54bc03defb 100644
--- a/pcsx2/VU1micro.c
+++ b/pcsx2/VU1micro.c
@@ -235,7 +235,9 @@ void _vu1Exec(VURegs* VU) {
 
 	VU->code = ptr[1]; 
 	VU1regs_UPPER_OPCODE[VU->code & 0x3f](&uregs);
+#ifndef INT_VUSTALLHACK
 	_vuTestUpperStalls(VU, &uregs);
+#endif
 
 	/* check upper flags */ 
 	if (ptr[1] & 0x80000000) { /* I flag */ 
@@ -245,7 +247,9 @@ void _vu1Exec(VURegs* VU) {
 	} else {
 		VU->code = ptr[0];
 		VU1regs_LOWER_OPCODE[VU->code >> 25](&lregs);
+#ifndef INT_VUSTALLHACK
 		_vuTestLowerStalls(VU, &lregs);
+#endif
 
 		vu1branch = lregs.pipe == VUPIPE_BRANCH;
 
diff --git a/pcsx2/VUops.c b/pcsx2/VUops.c
index 8d53f0a40b..92a05c6bf4 100644
--- a/pcsx2/VUops.c
+++ b/pcsx2/VUops.c
@@ -330,8 +330,8 @@ void _vuAddLowerStalls(VURegs * VU, _VURegsNum *VUregsn) {
 /******************************/
 /*   VU Upper instructions    */
 /******************************/
+#ifndef INT_VUDOUBLEHACK
 static u32 d;
-
 float vuDouble(u32 f)
 {
 	switch(f & 0x7f800000){
@@ -348,6 +348,12 @@ float vuDouble(u32 f)
 			break;
 	}	
 }
+#else
+float vuDouble(u32 f)
+{
+	return *(float*)&f;
+}
+#endif
 
 void _vuABS(VURegs * VU) {
 	if (_Ft_ == 0) return;