ARM: Implement FLOAD from GG_State.

src/lj_asm_arm.h

@@ -1007,14 +1007,15 @@ static ARMIns asm_fxstoreins(ASMState *as, IRIns *ir)
 
 static void asm_fload(ASMState *as, IRIns *ir)
 {
+  Reg dest = ra_dest(as, ir, RSET_GPR);
+  ARMIns ai = asm_fxloadins(as, ir);
+  Reg idx;
+  int32_t ofs;
   if (ir->op1 == REF_NIL) {  /* FLOAD from GG_State with offset. */
-    /* We can end up here if DCE is turned off. */
-    lj_assertA(!ra_used(ir), "NYI FLOAD GG_State");
+    idx = ra_allock(as, (int32_t)(ir->op2<<2) + (int32_t)J2GG(as->J), RSET_GPR);
+    ofs = 0;
   } else {
-    Reg dest = ra_dest(as, ir, RSET_GPR);
-    Reg idx = ra_alloc1(as, ir->op1, RSET_GPR);
-    ARMIns ai = asm_fxloadins(as, ir);
-    int32_t ofs;
+    idx = ra_alloc1(as, ir->op1, RSET_GPR);
     if (ir->op2 == IRFL_TAB_ARRAY) {
       ofs = asm_fuseabase(as, ir->op1);
       if (ofs) {  /* Turn the t->array load into an add for colocated arrays. */
@@ -1023,11 +1024,11 @@ static void asm_fload(ASMState *as, IRIns *ir)
       }
     }
     ofs = field_ofs[ir->op2];
-    if ((ai & 0x04000000))
-      emit_lso(as, ai, dest, idx, ofs);
-    else
-      emit_lsox(as, ai, dest, idx, ofs);
   }
+  if ((ai & 0x04000000))
+    emit_lso(as, ai, dest, idx, ofs);
+  else
+    emit_lsox(as, ai, dest, idx, ofs);
 }
 
 static void asm_fstore(ASMState *as, IRIns *ir)

src/lj_ffrecord.c

@@ -1086,13 +1086,7 @@ static TRef recff_io_fp(jit_State *J, TRef *udp, int32_t id)
 {
   TRef tr, ud, fp;
   if (id) {  /* io.func() */
-#if LJ_GC64
-    /* TODO: fix ARM32 asm_fload(), so we can use this for all archs. */
     ud = lj_ir_ggfload(J, IRT_UDATA, GG_OFS(g.gcroot[id]));
-#else
-    tr = lj_ir_kptr(J, &J2G(J)->gcroot[id]);
-    ud = emitir(IRT(IR_XLOAD, IRT_UDATA), tr, 0);
-#endif
   } else {  /* fp:method() */
     ud = J->base[0];
     if (!tref_isudata(ud))

src/lj_record.c

@@ -1009,13 +1009,8 @@ int lj_record_mm_lookup(jit_State *J, RecordIndex *ix, MMS mm)
     }
     /* The cdata metatable is treated as immutable. */
     if (LJ_HASFFI && tref_iscdata(ix->tab)) goto immutable_mt;
-#if LJ_GC64
-    /* TODO: fix ARM32 asm_fload(), so we can use this for all archs. */
     ix->mt = mix.tab = lj_ir_ggfload(J, IRT_TAB,
       GG_OFS(g.gcroot[GCROOT_BASEMT+itypemap(&ix->tabv)]));
-#else
-    ix->mt = mix.tab = lj_ir_ktab(J, mt);
-#endif
     goto nocheck;
   }
   ix->mt = mt ? mix.tab : TREF_NIL;