http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58269
--- Comment #18 from Mike Stump <mikestump at comcast dot net> ---
On Sep 6, 2013, at 8:43 AM, howarth at nitro dot med.uc.edu
<gcc-bugzi...@gcc.gnu.org> wrote:
> * i386.c (ix86_hard_regno_mode_ok): AVX modes are valid only when
>
> AVX is enabled.
llvm has:
// The first 8 512-bit vector arguments are passed in ZMM registers.
CCIfNotVarArg<CCIfType<[v16i32, v8i64, v16f32, v8f64],
CCIfSubtarget<"hasAVX512()",
CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3, ZMM4, ZMM5, ZMM6, ZMM7]>>>>,
just after the sse registers… conceptually, I wonder if gcc is missing that.
