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Remove unneeded snapshot preps for sunk stores.

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This commit is contained in:
Mike Pall 2012-07-03 23:19:45 +02:00
parent d5b9d84538
commit 4da7ffc34b
4 changed files with 19 additions and 53 deletions
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18
src/lj_asm_arm.h
View File

@ -693,7 +693,7 @@ static void asm_newref(ASMState *as, IRIns *ir)
{
const CCallInfo *ci = &lj_ir_callinfo[IRCALL_lj_tab_newkey];
IRRef args[3];
if (ir->r == RID_SINK) /* Sink newref. */
if (ir->r == RID_SINK)
return;
args[0] = ASMREF_L; /* lua_State *L */
args[1] = ir->op1; /* GCtab *t */
@ -814,9 +814,7 @@ static void asm_fload(ASMState *as, IRIns *ir)
static void asm_fstore(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
} else {
if (ir->r != RID_SINK) {
Reg src = ra_alloc1(as, ir->op2, RSET_GPR);
IRIns *irf = IR(ir->op1);
Reg idx = ra_alloc1(as, irf->op1, rset_exclude(RSET_GPR, src));
@ -838,9 +836,7 @@ static void asm_xload(ASMState *as, IRIns *ir)
static void asm_xstore(ASMState *as, IRIns *ir, int32_t ofs)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
} else {
if (ir->r != RID_SINK) {
Reg src = ra_alloc1(as, ir->op2, RSET_GPR);
asm_fusexref(as, asm_fxstoreins(ir), src, ir->op1,
rset_exclude(RSET_GPR, src), ofs);
@ -882,9 +878,7 @@ static void asm_ahuvload(ASMState *as, IRIns *ir)
static void asm_ahustore(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
} else {
if (ir->r != RID_SINK) {
RegSet allow = RSET_GPR;
Reg idx, src = RID_NONE, type = RID_NONE;
int32_t ofs = 0;
@ -1392,9 +1386,7 @@ static void asm_hiop(ASMState *as, IRIns *ir)
asm_fpmin_max(as, ir-1, (ir-1)->o == IR_MIN ? CC_HI : CC_LO);
return;
} else if ((ir-1)->o == IR_XSTORE) {
if ((ir-1)->r == RID_SINK)
asm_snap_prep(as);
else
if ((ir-1)->r != RID_SINK)
asm_xstore(as, ir, 4);
return;
}

22
src/lj_asm_mips.h
View File

@ -769,9 +769,7 @@ nolo:
static void asm_newref(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink newref. */
return;
} else {
if (ir->r != RID_SINK) {
const CCallInfo *ci = &lj_ir_callinfo[IRCALL_lj_tab_newkey];
IRRef args[3];
args[0] = ASMREF_L; /* lua_State *L */
@ -893,10 +891,7 @@ static void asm_fload(ASMState *as, IRIns *ir)
static void asm_fstore(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
return;
} else {
if (ir->r != RID_SINK) {
Reg src = ra_alloc1z(as, ir->op2, RSET_GPR);
IRIns *irf = IR(ir->op1);
Reg idx = ra_alloc1(as, irf->op1, rset_exclude(RSET_GPR, src));
@ -916,10 +911,7 @@ static void asm_xload(ASMState *as, IRIns *ir)
static void asm_xstore(ASMState *as, IRIns *ir, int32_t ofs)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
return;
} else {
if (ir->r != RID_SINK) {
Reg src = ra_alloc1z(as, ir->op2, irt_isfp(ir->t) ? RSET_FPR : RSET_GPR);
asm_fusexref(as, asm_fxstoreins(ir), src, ir->op1,
rset_exclude(RSET_GPR, src), ofs);
@ -956,10 +948,8 @@ static void asm_ahustore(ASMState *as, IRIns *ir)
RegSet allow = RSET_GPR;
Reg idx, src = RID_NONE, type = RID_NONE;
int32_t ofs = 0;
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
if (ir->r == RID_SINK)
return;
}
if (irt_isnum(ir->t)) {
src = ra_alloc1(as, ir->op2, RSET_FPR);
} else {
@ -1574,9 +1564,7 @@ static void asm_hiop(ASMState *as, IRIns *ir)
return;
} else if ((ir-1)->o == IR_XSTORE) {
as->curins--; /* Handle both stores here. */
if ((ir-1)->r == RID_SINK) {
asm_snap_prep(as);
} else {
if ((ir-1)->r != RID_SINK) {
asm_xstore(as, ir, LJ_LE ? 4 : 0);
asm_xstore(as, ir-1, LJ_LE ? 0 : 4);
}

18
src/lj_asm_ppc.h
View File

@ -773,7 +773,7 @@ static void asm_newref(ASMState *as, IRIns *ir)
{
const CCallInfo *ci = &lj_ir_callinfo[IRCALL_lj_tab_newkey];
IRRef args[3];
if (ir->r == RID_SINK) /* Sink newref. */
if (ir->r == RID_SINK)
return;
args[0] = ASMREF_L; /* lua_State *L */
args[1] = ir->op1; /* GCtab *t */
@ -894,9 +894,7 @@ static void asm_fload(ASMState *as, IRIns *ir)
static void asm_fstore(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
} else {
if (ir->r != RID_SINK) {
Reg src = ra_alloc1(as, ir->op2, RSET_GPR);
IRIns *irf = IR(ir->op1);
Reg idx = ra_alloc1(as, irf->op1, rset_exclude(RSET_GPR, src));
@ -918,10 +916,8 @@ static void asm_xload(ASMState *as, IRIns *ir)
static void asm_xstore(ASMState *as, IRIns *ir, int32_t ofs)
{
IRIns *irb;
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
if (ir->r == RID_SINK)
return;
}
if (ofs == 0 && mayfuse(as, ir->op2) && (irb = IR(ir->op2))->o == IR_BSWAP &&
ra_noreg(irb->r) && (irt_isint(ir->t) || irt_isu32(ir->t))) {
/* Fuse BSWAP with XSTORE to stwbrx. */
@ -978,10 +974,8 @@ static void asm_ahustore(ASMState *as, IRIns *ir)
RegSet allow = RSET_GPR;
Reg idx, src = RID_NONE, type = RID_NONE;
int32_t ofs = AHUREF_LSX;
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
if (ir->r == RID_SINK)
return;
}
if (irt_isnum(ir->t)) {
src = ra_alloc1(as, ir->op2, RSET_FPR);
} else {
@ -1761,9 +1755,7 @@ static void asm_hiop(ASMState *as, IRIns *ir)
return;
} else if ((ir-1)->o == IR_XSTORE) {
as->curins--; /* Handle both stores here. */
if ((ir-1)->r == RID_SINK) {
asm_snap_prep(as);
} else {
if ((ir-1)->r != RID_SINK) {
asm_xstore(as, ir, 0);
asm_xstore(as, ir-1, 4);
}

14
src/lj_asm_x86.h
View File

@ -1155,7 +1155,7 @@ static void asm_newref(ASMState *as, IRIns *ir)
IRRef args[3];
IRIns *irkey;
Reg tmp;
if (ir->r == RID_SINK) /* Sink newref. */
if (ir->r == RID_SINK)
return;
args[0] = ASMREF_L; /* lua_State *L */
args[1] = ir->op1; /* GCtab *t */
@ -1261,10 +1261,8 @@ static void asm_fxstore(ASMState *as, IRIns *ir)
RegSet allow = RSET_GPR;
Reg src = RID_NONE, osrc = RID_NONE;
int32_t k = 0;
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
if (ir->r == RID_SINK)
return;
}
/* The IRT_I16/IRT_U16 stores should never be simplified for constant
** values since mov word [mem], imm16 has a length-changing prefix.
*/
@ -1378,10 +1376,8 @@ static void asm_ahuvload(ASMState *as, IRIns *ir)
static void asm_ahustore(ASMState *as, IRIns *ir)
{
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
if (ir->r == RID_SINK)
return;
}
if (irt_isnum(ir->t)) {
Reg src = ra_alloc1(as, ir->op2, RSET_FPR);
asm_fuseahuref(as, ir->op1, RSET_GPR);
@ -2261,9 +2257,7 @@ static void asm_hiop(ASMState *as, IRIns *ir)
asm_comp_int64(as, ir);
return;
} else if ((ir-1)->o == IR_XSTORE) {
if ((ir-1)->r == RID_SINK)
asm_snap_prep(as);
else
if ((ir-1)->r != RID_SINK)
asm_fxstore(as, ir);
return;
}