diff options
Diffstat (limited to 'lisc/isel.c')
| -rw-r--r-- | lisc/isel.c | 67 |
1 files changed, 18 insertions, 49 deletions
diff --git a/lisc/isel.c b/lisc/isel.c index 48f9dfc..49b8f28 100644 --- a/lisc/isel.c +++ b/lisc/isel.c @@ -13,37 +13,6 @@ * constant allocX in the first basic block) */ -static Ref -newtmp(Fn *fn) -{ - static int n; - int t; - - t = fn->ntmp++; - fn->tmp = realloc(fn->tmp, fn->ntmp * sizeof fn->tmp[0]); - if (!fn->tmp) - diag("isel: out of memory"); - memset(&fn->tmp[t], 0, sizeof fn->tmp[t]); - fn->tmp[t].spill = -1; - sprintf(fn->tmp[t].name, "isel%d", ++n); - return TMP(t); -} - -static Ref -newcon(int64_t val, Fn *fn) -{ - int c; - - for (c=0; c<fn->ncon; c++) - if (fn->con[c].type == CNum && fn->con[c].val == val) - return CON(c); - fn->ncon++; - fn->con = realloc(fn->con, fn->ncon * sizeof fn->con[0]); - if (!fn->con) - diag("isel: out of memory"); - fn->con[c] = (Con){.type = CNum, .val = val}; - return CON(c); -} static int noimm(Ref r, Fn *fn) @@ -81,7 +50,7 @@ selcmp(Ref arg[2], int w, Fn *fn) emit(OXCmp, w, R, arg[1], arg[0]); r = arg[1]; if (w && rtype(r) == RCon && noimm(r, fn)) { - curi->arg[0] = newtmp(fn); + curi->arg[0] = newtmp("isel", fn); emit(OCopy, w, curi->arg[0], r, R); } } @@ -110,7 +79,7 @@ sel(Ins i, Fn *fn) cpy[n].s = -1; s = rslot(r0, fn); if (s != -1) { - r0 = newtmp(fn); + r0 = newtmp("isel", fn); i.arg[n] = r0; cpy[n].r = r0; cpy[n].s = s; @@ -131,7 +100,7 @@ sel(Ins i, Fn *fn) /* immediates not allowed for * divisions in x86 */ - r0 = newtmp(fn); + r0 = newtmp("isel", fn); } else r0 = i.arg[1]; emit(OXDiv, w, R, r0, R); @@ -188,7 +157,7 @@ Emit: */ r0 = i.arg[n]; if (rtype(r0) == RCon && noimm(r0, fn)) { - curi->arg[n] = newtmp(fn); + curi->arg[n] = newtmp("isel", fn); emit(OCopy, 1, curi->arg[n], r0, R); } } @@ -205,14 +174,14 @@ Emit: val = (val + 15) & ~INT64_C(15); if (val < 0 || val > INT32_MAX) diag("isel: alloc too large"); - emit(OAlloc, 0, i.to, newcon(val, fn), R); + emit(OAlloc, 0, i.to, getcon(val, fn), R); } else { /* r0 = (i.arg[0] + 15) & -16 */ - r0 = newtmp(fn); - r1 = newtmp(fn); + r0 = newtmp("isel", fn); + r1 = newtmp("isel", fn); emit(OSAlloc, 0, i.to, r0, R); - emit(OAnd, 1, r0, r1, newcon(-16, fn)); - emit(OAdd, 1, r1, i.arg[0], newcon(15, fn)); + emit(OAnd, 1, r0, r1, getcon(-16, fn)); + emit(OAdd, 1, r1, i.arg[0], getcon(15, fn)); } break; default: @@ -502,7 +471,7 @@ selcall(Fn *fn, Ins *i0, Ins *i1) if (!req(i1->arg[1], R)) diag("struct-returning function not implemented"); if (stk) { - r = newcon(-(int64_t)stk, fn); + r = getcon(-(int64_t)stk, fn); emit(OSAlloc, 0, R, r, R); } emit(OCopy, i1->wide, i1->to, TMP(RAX), R); @@ -516,9 +485,9 @@ selcall(Fn *fn, Ins *i0, Ins *i1) diag("isel: unsupported float struct"); if (a->size > 8) { r = TMP(rsave[ni+1]); - r1 = newtmp(fn); + r1 = newtmp("isel", fn); emit(OLoad, 1, r, r1, R); - r = newcon(8, fn); + r = getcon(8, fn); emit(OAdd, 1, r1, i->arg[1], r); r = TMP(rsave[ni]); ni += 2; @@ -580,12 +549,12 @@ selpar(Fn *fn, Ins *i0, Ins *i1) if (i->op == OParc) { if (a->rty[0] == RSse || a->rty[1] == RSse) diag("isel: unsupported float struct"); - r1 = newtmp(fn); + r1 = newtmp("isel", fn); *curi++ = (Ins){OCopy, 1, r1, {r}}; a->rty[0] = r1.val; if (a->size > 8) { r = TMP(rsave[ni++]); - r1 = newtmp(fn); + r1 = newtmp("isel", fn); *curi++ = (Ins){OCopy, 1, r1, {r}}; a->rty[1] = r1.val; } @@ -600,12 +569,12 @@ selpar(Fn *fn, Ins *i0, Ins *i1) ; r1 = i->to; r = TMP(a->rty[0]); - r2 = newcon(a->size, fn); + r2 = getcon(a->size, fn); *curi++ = (Ins){OAlloc+al, 1, r1, {r2}}; *curi++ = (Ins){OStorel, 0, R, {r, r1}}; if (a->size > 8) { - r = newtmp(fn); - r2 = newcon(8, fn); + r = newtmp("isel", fn); + r2 = getcon(8, fn); *curi++ = (Ins){OAdd, 1, r, {r1, r2}}; r1 = TMP(a->rty[1]); *curi++ = (Ins){OStorel, 0, R, {r1, r}}; @@ -695,7 +664,7 @@ isel(Fn *fn) assert(a+1 < p->narg); s = rslot(p->arg[a], fn); if (s != -1) { - p->arg[a] = newtmp(fn); + p->arg[a] = newtmp("isel", fn); emit(OAddr, 1, p->arg[a], SLOT(s), R); } } |