From 4250da10923347c9ee907f8d72bd93dfa5ee8742 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 11 Dec 2018 10:25:02 -0600 Subject: [PATCH] tcg: Improve call argument loading Free the argument register only after we have verified that the temporary is not already in that register. This case is likely now that we are back propagating the preferred register. Signed-off-by: Richard Henderson --- tcg/tcg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tcg/tcg.c b/tcg/tcg.c index 5f8c09b0b4..c54b119020 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -3611,15 +3611,16 @@ static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op) if (arg != TCG_CALL_DUMMY_ARG) { ts = arg_temp(arg); reg = tcg_target_call_iarg_regs[i]; - tcg_reg_free(s, reg, allocated_regs); if (ts->val_type == TEMP_VAL_REG) { if (ts->reg != reg) { + tcg_reg_free(s, reg, allocated_regs); tcg_out_mov(s, ts->type, reg, ts->reg); } } else { TCGRegSet arg_set = 0; + tcg_reg_free(s, reg, allocated_regs); tcg_regset_set_reg(arg_set, reg); temp_load(s, ts, arg_set, allocated_regs, 0); } -- 2.11.0