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| author | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-03-16 11:30:57 -0400 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-03-16 11:30:57 -0400 |
| commit | ce7fd0cb49fc1864eb1ef290cd835a64ce25efbf (patch) | |
| tree | d2883910b90a7e9c187bb3a1b5aec7c7b2cab5da /lisc/isel.c | |
| parent | db6f7ad72dda70f5dd3b34a3faea1e08537e77be (diff) | |
| download | roux-ce7fd0cb49fc1864eb1ef290cd835a64ce25efbf.tar.gz | |
add unsigned division and remainder
Diffstat (limited to 'lisc/isel.c')
| -rw-r--r-- | lisc/isel.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lisc/isel.c b/lisc/isel.c index da7e946..8752012 100644 --- a/lisc/isel.c +++ b/lisc/isel.c @@ -221,7 +221,9 @@ sel(Ins i, ANum *an, Fn *fn) switch (i.op) { case ODiv: case ORem: - if (i.op == ODiv) + case OUDiv: + case OURem: + if (i.op == ODiv || i.op == OUDiv) r0 = TMP(RAX), r1 = TMP(RDX); else r0 = TMP(RDX), r1 = TMP(RAX); @@ -234,8 +236,13 @@ sel(Ins i, ANum *an, Fn *fn) r0 = newtmp("isel", fn); } else r0 = i.arg[1]; - emit(OXDiv, k, R, r0, R); - emit(OSign, k, TMP(RDX), TMP(RAX), R); + if (i.op == ODiv || i.op == ORem) { + emit(OXIDiv, k, R, r0, R); + emit(OSign, k, TMP(RDX), TMP(RAX), R); + } else { + emit(OXDiv, k, R, r0, R); + emit(OCopy, k, TMP(RDX), CON_Z, R); + } emit(OCopy, k, TMP(RAX), i.arg[0], R); if (rtype(i.arg[1]) == RCon) emit(OCopy, k, r0, i.arg[1], R); |