tcg/i386: remove ld/st third argument register constraint
On x86_64, remove the constraint on the third argument register which
is not needed:
- For loads the helper arguments are env, addr, mem_idx. The addr
value should not be in the two first argument registers as they are
used in tcg_out_tlb_load().
- For stores the helper arguments are env, addr, data, mem_idx.
The addr and data values should not be in the two first argument
registers as they are used in tcg_out_tlb_load(). The data value
should also not be in the two first argument registers, but could
be in the third argument register in which case it would be already
loaded at the right location.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index 4c59e33..9c8f69a 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -92,7 +92,6 @@
#if TCG_TARGET_REG_BITS == 64
# define TCG_REG_L0 tcg_target_call_iarg_regs[0]
# define TCG_REG_L1 tcg_target_call_iarg_regs[1]
-# define TCG_REG_L2 tcg_target_call_iarg_regs[2]
#else
# define TCG_REG_L0 TCG_REG_EAX
# define TCG_REG_L1 TCG_REG_EDX
@@ -181,14 +180,11 @@
ct->ct |= TCG_CT_REG;
#if TCG_TARGET_REG_BITS == 64
tcg_regset_set32(ct->u.regs, 0, 0xffff);
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_L0);
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_L1);
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_L2);
#else
tcg_regset_set32(ct->u.regs, 0, 0xff);
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_L0);
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_L1);
#endif
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_L0);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_L1);
break;
case 'e':
