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Bit-shift expressions: Cast scalar right-hand-sides to vectors if needed

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This promotion from scalar right-hand-sides to vectors already happens
for the arithmetic binops, via `typeCombine()` side effects. Handle
bit-shift expressions too now, by casting a scalar to the left-hand-side
vector type.

This can't be tested with DMD, as DMD's `Target.isVectorOpSupported()`
doesn't support bit-shifts yet. It is ~required/useful for LDC though.
This commit is contained in:
Martin Kinkelin 2024-11-13 22:19:27 +01:00 • committed by The Dlang Bot
parent dcecb46321
commit 3d6c65e75d
1 changed files with 5 additions and 1 deletions
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6
compiler/src/dmd/expressionsem.d
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@ -13114,9 +13114,13 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
result = exp.incompatibleTypes(); result = exp.incompatibleTypes();
return; return;
} }
exp.e1 = integralPromotions(exp.e1, sc); exp.e1 = integralPromotions(exp.e1, sc);
if (exp.e2.type.toBasetype().ty != Tvector) if (exp.e2.type.toBasetype().ty != Tvector)
exp.e2 = exp.e2.castTo(sc, Type.tshiftcnt); {
Type tb1 = exp.e1.type.toBasetype();
exp.e2 = exp.e2.castTo(sc, tb1.ty == Tvector ? tb1 : Type.tshiftcnt);
}
exp.type = exp.e1.type; exp.type = exp.e1.type;
result = exp; result = exp;