diff options
| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2012-07-30 19:11:16 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2012-07-30 19:11:16 +0200 |
| commit | 4f33c88a51587681b7be1ae57cfbc43b627c6bc4 (patch) | |
| tree | 25560404dc80007e5dc268811242c9071f6a1017 /sys/src/cmd/8c/cgen.c | |
| parent | fcc5e75d07e5bc6cb3ddac6d9a437e7ec62d0d95 (diff) | |
import updated compilers from sources
Diffstat (limited to 'sys/src/cmd/8c/cgen.c')
| -rw-r--r-- | sys/src/cmd/8c/cgen.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/src/cmd/8c/cgen.c b/sys/src/cmd/8c/cgen.c index 6fdaf6b01..9436ac698 100644 --- a/sys/src/cmd/8c/cgen.c +++ b/sys/src/cmd/8c/cgen.c @@ -25,6 +25,12 @@ cgen(Node *n, Node *nn) l = n->left; r = n->right; o = n->op; +// Go's version does the following, but it's the wrong place: doesn't allow assignment +// if(o == OEXREG || nn != Z && nn->op == OEXREG) { +// gmove(n, nn); +// return; +// } + if(n->addable >= INDEXED) { if(nn == Z) { switch(o) { @@ -244,7 +250,7 @@ cgen(Node *n, Node *nn) if(n->op == OADD && l->op == OASHL && l->right->op == OCONST && (r->op != OCONST || r->vconst < -128 || r->vconst > 127)) { c = l->right->vconst; - if(c > 0 && c <= 3) { + if(c > 0 && c <= 3 && nareg(1) >= 4) { if(l->left->complex >= r->complex) { regalloc(&nod, l->left, nn); cgen(l->left, &nod); @@ -887,6 +893,7 @@ cgen(Node *n, Node *nn) break; case OFUNC: + l = uncomma(l); if(l->complex >= FNX) { if(l->op != OIND) diag(n, "bad function call"); @@ -1824,6 +1831,12 @@ copy: gins(ACLD, Z, Z); gins(AREP, Z, Z); gins(AMOVSL, Z, Z); + if(w & (SZ_LONG-1)) { + /* odd length of packed structure */ + gins(AMOVL, nodconst(w & (SZ_LONG-1)), &nod3); + gins(AREP, Z, Z); + gins(AMOVSB, Z, Z); + } if(c & 4) { gins(APOPL, Z, &nod3); reg[D_CX]--; |