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Improve register allocation on x64.

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Mike Pall 2010-03-02 23:34:13 +01:00
parent 20fa30b388
commit 32309583e5
1 changed files with 5 additions and 0 deletions
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5
src/lj_asm.c
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@ -791,6 +791,11 @@ static Reg ra_allocref(ASMState *as, IRRef ref, RegSet allow)
pick &= ~as->modset; pick &= ~as->modset;
r = rset_pickbot(pick); /* Reduce conflicts with inverse allocation. */ r = rset_pickbot(pick); /* Reduce conflicts with inverse allocation. */
} else { } else {
#if LJ_64
/* We've got plenty of regs, so get callee-save regs if possible. */
if ((pick & ~RSET_SCRATCH))
pick &= ~RSET_SCRATCH;
#endif
r = rset_picktop(pick); r = rset_picktop(pick);
} }
} else { } else {