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tcg: Add preferred_reg argument to temp_load

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Pass this through to tcg_reg_alloc.

Backports commit b722452aefb089e003b16946a4d73bad1fd3b79b from qemu
This commit is contained in:
Richard Henderson 2019-01-05 06:48:17 -05:00 committed by Lioncash
parent 5e73b27607
commit 96b6640f3b
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 9 additions and 9 deletions
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18
qemu/tcg/tcg.c
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@ -2373,7 +2373,7 @@ static void temp_allocate_frame(TCGContext *s, TCGTemp *ts)
s->current_frame_offset += sizeof(tcg_target_long); s->current_frame_offset += sizeof(tcg_target_long);
} }
static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet); static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet, TCGRegSet);
/* Mark a temporary as free or dead. If 'free_or_dead' is negative, /* Mark a temporary as free or dead. If 'free_or_dead' is negative,
mark it free; otherwise mark it dead. */ mark it free; otherwise mark it dead. */
@ -2422,7 +2422,7 @@ static void temp_sync(TCGContext *s, TCGTemp *ts,
break; break;
} }
temp_load(s, ts, s->tcg_target_available_regs[ts->type], temp_load(s, ts, s->tcg_target_available_regs[ts->type],
allocated_regs); allocated_regs, 0);
/* fallthrough */ /* fallthrough */
case TEMP_VAL_REG: case TEMP_VAL_REG:
@ -2528,7 +2528,7 @@ static TCGReg tcg_reg_alloc(TCGContext *s, TCGRegSet required_regs,
/* Make sure the temporary is in a register. If needed, allocate the register /* Make sure the temporary is in a register. If needed, allocate the register
from DESIRED while avoiding ALLOCATED. */ from DESIRED while avoiding ALLOCATED. */
static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs, static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
TCGRegSet allocated_regs) TCGRegSet allocated_regs, TCGRegSet preferred_regs)
{ {
TCGReg reg; TCGReg reg;
@ -2537,13 +2537,13 @@ static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
return; return;
case TEMP_VAL_CONST: case TEMP_VAL_CONST:
reg = tcg_reg_alloc(s, desired_regs, allocated_regs, reg = tcg_reg_alloc(s, desired_regs, allocated_regs,
0, ts->indirect_base); preferred_regs, ts->indirect_base);
tcg_out_movi(s, ts->type, reg, ts->val); tcg_out_movi(s, ts->type, reg, ts->val);
ts->mem_coherent = 0; ts->mem_coherent = 0;
break; break;
case TEMP_VAL_MEM: case TEMP_VAL_MEM:
reg = tcg_reg_alloc(s, desired_regs, allocated_regs, reg = tcg_reg_alloc(s, desired_regs, allocated_regs,
0, ts->indirect_base); preferred_regs, ts->indirect_base);
tcg_out_ld(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset); tcg_out_ld(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset);
ts->mem_coherent = 1; ts->mem_coherent = 1;
break; break;
@ -2673,7 +2673,7 @@ static void tcg_reg_alloc_mov(TCGContext *s, const TCGOp *op)
the SOURCE value into its own register first, that way we the SOURCE value into its own register first, that way we
don't have to reload SOURCE the next time it is used. */ don't have to reload SOURCE the next time it is used. */
if (ts->val_type == TEMP_VAL_MEM) { if (ts->val_type == TEMP_VAL_MEM) {
temp_load(s, ts, s->tcg_target_available_regs[itype], allocated_regs); temp_load(s, ts, s->tcg_target_available_regs[itype], allocated_regs, 0);
} }
tcg_debug_assert(ts->val_type == TEMP_VAL_REG); tcg_debug_assert(ts->val_type == TEMP_VAL_REG);
@ -2757,7 +2757,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCGOp *op)
goto iarg_end; goto iarg_end;
} }
temp_load(s, ts, arg_ct->u.regs, i_allocated_regs); temp_load(s, ts, arg_ct->u.regs, i_allocated_regs, 0);
if (arg_ct->ct & TCG_CT_IALIAS) { if (arg_ct->ct & TCG_CT_IALIAS) {
if (ts->fixed_reg) { if (ts->fixed_reg) {
@ -2938,7 +2938,7 @@ static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op)
if (arg != TCG_CALL_DUMMY_ARG) { if (arg != TCG_CALL_DUMMY_ARG) {
ts = arg_temp(arg); ts = arg_temp(arg);
temp_load(s, ts, s->tcg_target_available_regs[ts->type], temp_load(s, ts, s->tcg_target_available_regs[ts->type],
s->reserved_regs); s->reserved_regs, 0);
tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset); tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset);
} }
#ifndef TCG_TARGET_STACK_GROWSUP #ifndef TCG_TARGET_STACK_GROWSUP
@ -2963,7 +2963,7 @@ static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op)
TCGRegSet arg_set = 0; TCGRegSet arg_set = 0;
tcg_regset_set_reg(arg_set, reg); tcg_regset_set_reg(arg_set, reg);
temp_load(s, ts, arg_set, allocated_regs); temp_load(s, ts, arg_set, allocated_regs, 0);
} }
tcg_regset_set_reg(allocated_regs, reg); tcg_regset_set_reg(allocated_regs, reg);