qiucf added inline comments.
================
Comment at: clang/lib/CodeGen/TargetInfo.cpp:5159
BT->getKind() == BuiltinType::LongDouble ||
+ BT->getKind() == BuiltinType::Ibm128 ||
(getContext().getTargetInfo().hasFloat128Type() &&
----------------
rjmccall wrote:
> qiucf wrote:
> > rjmccall wrote:
> > > I hesitate to ask this, but does `__ibm128` form homogeneous aggregates
> > > with `double`s?
> > > Homogeneous floating-point aggregates can have up to four IBM EXTENDED
> > > PRECISION members, four IEEE BINARY 128 QUADRUPLE PRECISION members, four
> > > _Decimal128 members, or eight members of other floating-point types.
> > > (Unions are treated as their largest member. For homogeneous unions,
> > > different union alternatives may have different sizes, provided that all
> > > union members are homogeneous with respect to each other.) They are
> > > passed in floating-point registers if parameters of that type would be
> > > passed in floating-point registers. They are passed in vector registers
> > > if parameters of that type would be passed in vector registers. They are
> > > passed as if each member was specified as a separate parameter.
> >
> > Yes.
> No, I mean, would an `__ibm128` in a struct with a pair of `double`s be
> treated as if it were 4 `double`s, or is it considered non-homogeneous the
> same way that a struct with e.g. 4 `float`s and 2 `double`s would be
> non-homogeneous?
Ah, I think not. `__ibm128` (PowerPC `long double` also produces `ppc_fp128`)
is distinct type in determining homogeneous aggregates.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D93377/new/
https://reviews.llvm.org/D93377
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