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prefer lower indexes in register allocation, this avoids REX prefixes on

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x86_64 when %r8 - %r15 are used (very light speedup expected)
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gbeauche 2006-02-26 18:58:18 +00:00
parent 91babf4bb5
commit dbc467e316
1 changed files with 2 additions and 1 deletions
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3
BasiliskII/src/uae_cpu/compiler/compemu_support.cpp
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@ -1409,7 +1409,8 @@ static int alloc_reg_hinted(int r, int size, int willclobber, int hint)
bestreg=-1;
when=2000000000;
for (i=N_REGS;i--;) {
/* XXX use a regalloc_order table? */
for (i=0;i<N_REGS;i++) {
badness=live.nat[i].touched;
if (live.nat[i].nholds==0)
badness=0;