diff options
Diffstat (limited to 'lisc/isel.c')
| -rw-r--r-- | lisc/isel.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lisc/isel.c b/lisc/isel.c index 5bbbab1..bf6fa25 100644 --- a/lisc/isel.c +++ b/lisc/isel.c @@ -19,6 +19,7 @@ typedef struct AClass AClass; struct ANum { char n, l, r; Ins *i; + Ref mem; }; static void amatch(Addr *, Ref, ANum *, Fn *, int); @@ -75,8 +76,6 @@ rslot(Ref r, Fn *fn) static void sel(Ins i, ANum *an, Fn *fn) { - static char logS[] = {[2] = 1, [4] = 2, [8] = 3}; - Ins *i0; Ref r0, r1; int n, x, s, w; int64_t val; @@ -133,10 +132,20 @@ sel(Ins i, ANum *an, Fn *fn) } goto Emit; case_OLoad: - if (cpy[0].s != -1) { - i.arg[0] = SLOT(cpy[0].s); - cpy[0].s = -1; + r0 = i.arg[0]; + if (rtype(r0) == RTmp) { + r1 = an[r0.val].mem; + if (req(r1, R)) { + amatch(&a, r0, an, fn, 1); + vgrow(&fn->mem, ++fn->nmem); + fn->mem[fn->nmem-1] = a; + i.arg[0] = MEM(fn->nmem-1); + an[r0.val].mem = i.arg[0]; + } else + i.arg[0] = r1; } + cpy[0].s = -1; + emiti(i); break; case OXPush: case OCall: @@ -152,6 +161,7 @@ Emit: emiti(i); #if 0 for (n=0; n<2; n++) { + Ins *i0; /* fuse memory loads into arithmetic * operations when the sizes match */ |