diff options
Diffstat (limited to 'lisc/isel.c')
| -rw-r--r-- | lisc/isel.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/lisc/isel.c b/lisc/isel.c index 53f98be..b0b1446 100644 --- a/lisc/isel.c +++ b/lisc/isel.c @@ -425,12 +425,24 @@ blit(Ref rstk, uint soff, Ref rsrc, uint sz, Fn *fn) } static void -selret(Blk *b, Fn *fn) +retr(Ref reg[2], AClass *aret) { static int retreg[2][2] = {{RAX, RDX}, {XMM0, XMM0+1}}; - int j, n, k, nr[2]; + int n, k, nr[2]; + + nr[0] = nr[1] = 0; + for (n=0; n<2; n++) { + k = KBASE(aret->cls[n]); + reg[n] = TMP(retreg[k][nr[k]++]); + } +} + +static void +selret(Blk *b, Fn *fn) +{ + int j, k; Ref r, r0, reg[2]; - AClass a; + AClass aret; j = b->jmp.type; @@ -442,20 +454,15 @@ selret(Blk *b, Fn *fn) b->jmp.type = JRet0; if (j == JRetc) { - aclass(&a, &typ[fn->retty]); - b->jmp.type = JRet0; - if (a.inmem) { + aclass(&aret, &typ[fn->retty]); + if (aret.inmem) { assert(rtype(fn->retr) == RTmp); emit(OCopy, Kl, TMP(RAX), fn->retr, R); chuse(fn->retr, +1, fn); - blit(fn->retr, 0, r0, a.size, fn); + blit(fn->retr, 0, r0, aret.size, fn); } else { - nr[0] = nr[1] = 0; - for (n=0; n<2; n++) { - k = KBASE(a.cls[n]); - reg[n] = TMP(retreg[k][nr[k]++]); - } - if (a.size > 8) { + retr(reg, &aret); + if (aret.size > 8) { r = newtmp("abi", Kl, fn); emit(OLoad, Kl, reg[1], r, R); emit(OAdd, Kl, r, r0, getcon(8, fn)); |