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| author | Eyal Sawady <ecs@d2evs.net> | 2022-01-17 22:00:48 +0000 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin@c9x.me> | 2022-01-23 11:43:59 +0100 |
| commit | e91d12158122b23271ff49de8977c92fef7f3908 (patch) | |
| tree | ea5051ef69ae917f23249fe7a6adc8569deb3718 /fold.c | |
| parent | 367c8215d99054892740ad74c690b106c45ebf60 (diff) | |
| download | roux-e91d12158122b23271ff49de8977c92fef7f3908.tar.gz | |
Add a negation instruction
Necessary for floating-point negation, because `%result = sub 0, %operand` doesn't give the correct sign for 0/-0.
Diffstat (limited to 'fold.c')
| -rw-r--r-- | fold.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fold.c b/fold.c index 348e532..9923f75 100644 --- a/fold.c +++ b/fold.c @@ -368,6 +368,7 @@ foldint(Con *res, int op, int w, Con *cl, Con *cr) switch (op) { case Oadd: x = l.u + r.u; break; case Osub: x = l.u - r.u; break; + case Oneg: x = -l.u; break; case Odiv: x = w ? l.s / r.s : (int32_t)l.s / (int32_t)r.s; break; case Orem: x = w ? l.s % r.s : (int32_t)l.s % (int32_t)r.s; break; case Oudiv: x = w ? l.u / r.u : (uint32_t)l.u / (uint32_t)r.u; break; @@ -464,6 +465,7 @@ foldflt(Con *res, int op, int w, Con *cl, Con *cr) switch (op) { case Oadd: xd = ld + rd; break; case Osub: xd = ld - rd; break; + case Oneg: xd = -ld; break; case Odiv: xd = ld / rd; break; case Omul: xd = ld * rd; break; case Oswtof: xd = (int32_t)cl->bits.i; break; @@ -480,6 +482,7 @@ foldflt(Con *res, int op, int w, Con *cl, Con *cr) switch (op) { case Oadd: xs = ls + rs; break; case Osub: xs = ls - rs; break; + case Oneg: xs = -ls; break; case Odiv: xs = ls / rs; break; case Omul: xs = ls * rs; break; case Oswtof: xs = (int32_t)cl->bits.i; break; |