DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Use HIOP for XSTORE in SPLIT pass.

Browse Source
This commit is contained in:
Mike Pall
2012-07-02 22:37:00 +02:00
parent 7ae3832f20
commit 264177b0d0
5 changed files with 77 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
src/lj_asm_arm.h
View File

@@ -206,17 +206,19 @@ static IRRef asm_fuselsl2(ASMState *as, IRRef ref)
/* Fuse XLOAD/XSTORE reference into load/store operand. */
static void asm_fusexref(ASMState *as, ARMIns ai, Reg rd, IRRef ref,
RegSet allow)
RegSet allow, int32_t ofs)
{
IRIns *ir = IR(ref);
int32_t ofs = 0;
Reg base;
if (ra_noreg(ir->r) && mayfuse(as, ref)) {
int32_t lim = (ai & 0x04000000) ? 4096 : 256;
if (ir->o == IR_ADD) {
if (irref_isk(ir->op2) && (ofs = IR(ir->op2)->i) > -lim && ofs < lim) {
int32_t ofs2;
if (irref_isk(ir->op2) &&
(ofs2 = ofs + IR(ir->op2)->i) > -lim && ofs2 < lim) {
ofs = ofs2;
ref = ir->op1;
} else {
} else if (ofs == 0) {
IRRef lref = ir->op1, rref = ir->op2;
Reg rn, rm;
if ((ai & 0x04000000)) {
@@ -237,6 +239,7 @@ static void asm_fusexref(ASMState *as, ARMIns ai, Reg rd, IRRef ref,
return;
}
} else if (ir->o == IR_STRREF) {
lua_assert(ofs == 0);
ofs = (int32_t)sizeof(GCstr);
if (irref_isk(ir->op2)) {
ofs += IR(ir->op2)->i;
@@ -809,29 +812,33 @@ static void asm_fload(ASMState *as, IRIns *ir)
static void asm_fstore(ASMState *as, IRIns *ir)
{
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));
int32_t ofs = field_ofs[irf->op2];
ARMIns ai = asm_fxstoreins(ir);
if ((ai & 0x04000000))
emit_lso(as, ai, src, idx, ofs);
else
emit_lsox(as, ai, src, idx, ofs);
if (ir->r == RID_SINK) { /* Sink store. */
asm_snap_prep(as);
} else {
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));
int32_t ofs = field_ofs[irf->op2];
ARMIns ai = asm_fxstoreins(ir);
if ((ai & 0x04000000))
emit_lso(as, ai, src, idx, ofs);
else
emit_lsox(as, ai, src, idx, ofs);
}
}
static void asm_xload(ASMState *as, IRIns *ir)
{
Reg dest = ra_dest(as, ir, RSET_GPR);
lua_assert(!(ir->op2 & IRXLOAD_UNALIGNED));
asm_fusexref(as, asm_fxloadins(ir), dest, ir->op1, RSET_GPR);
asm_fusexref(as, asm_fxloadins(ir), dest, ir->op1, RSET_GPR, 0);
}
static void asm_xstore(ASMState *as, IRIns *ir)
static void asm_xstore(ASMState *as, IRIns *ir, int32_t ofs)
{
Reg src = ra_alloc1(as, ir->op2, RSET_GPR);
asm_fusexref(as, asm_fxstoreins(ir), src, ir->op1,
rset_exclude(RSET_GPR, src));
rset_exclude(RSET_GPR, src), ofs);
}
static void asm_ahuvload(ASMState *as, IRIns *ir)
@@ -1374,6 +1381,9 @@ static void asm_hiop(ASMState *as, IRIns *ir)
if (uselo || usehi)
asm_fpmin_max(as, ir-1, (ir-1)->o == IR_MIN ? CC_HI : CC_LO);
return;
} else if ((ir-1)->o == IR_XSTORE) {
asm_xstore(as, ir, 4);
return;
}
if (!usehi) return; /* Skip unused hiword op for all remaining ops. */
switch ((ir-1)->o) {
@@ -1702,7 +1712,7 @@ static void asm_ir(ASMState *as, IRIns *ir)
case IR_ASTORE: case IR_HSTORE: case IR_USTORE: asm_ahustore(as, ir); break;
case IR_FSTORE: asm_fstore(as, ir); break;
case IR_XSTORE: asm_xstore(as, ir); break;
case IR_XSTORE: asm_xstore(as, ir, 0); break;
/* Allocations. */
case IR_SNEW: case IR_XSNEW: asm_snew(as, ir); break;