valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Workaround clang confusing itself (compile error), results in a small speed up in general (thanks for helping wjp). clang compiled x64 dynrec core appears to be unstable though. (-O0 seems to help)

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3894
This commit is contained in:
Peter Veenstra 2015-01-21 20:50:40 +00:00
parent 85c11c6fef
commit f9c67101c7
1 changed files with 4 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/cpu/core_dynrec/risc_x64.h
View file

@ -85,7 +85,8 @@ static void gen_mov_regs(HostReg reg_dst,HostReg reg_src) {
static INLINE void gen_reg_memaddr(HostReg reg,void* data) {
Bit64s diff = (Bit64s)data-((Bit64s)cache.pos+5);
if ((diff<0x80000000LL) && (diff>-0x80000000LL)) {
// if ((diff<0x80000000LL) && (diff>-0x80000000LL)) { //clang messes itself up on this...
if ( (diff>>63) == (diff>>31) ) { //signed bit extend, test to see if value fits in a Bit32s
cache_addb(0x05+(reg<<3));
// RIP-relative addressing is offset after the instruction
cache_addd((Bit32u)(((Bit64u)diff)&0xffffffffLL));
@ -100,7 +101,8 @@ static INLINE void gen_reg_memaddr(HostReg reg,void* data) {
static INLINE void gen_memaddr(Bitu op,void* data,Bitu off) {
Bit64s diff;
diff = (Bit64s)data-((Bit64s)cache.pos+off+5);
if ((diff<0x80000000LL) && (diff>-0x80000000LL)) {
// if ((diff<0x80000000LL) && (diff>-0x80000000LL)) {
if ( (diff>>63) == (diff>>31) ) {
// RIP-relative addressing is offset after the instruction
cache_addb(op+1);
cache_addd((Bit32u)(((Bit64u)diff)&0xffffffffLL));