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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - R600/SI: Cannot select store with truncate to 32-bit"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65873#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - R600/SI: Cannot select store with truncate to 32-bit"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65873">bug 65873</a>
from <span class="vcard"><a class="email" href="mailto:tstellar@gmail.com" title="Tom Stellard <tstellar@gmail.com>"> <span class="fn">Tom Stellard</span></a>
</span></b>
<pre>The SI backend needs to be fixed so it can handle zext i64 loads, but there is
also a bug in libclc. The vload implementation assumes pointer types are
32-bit:
define <2 x i32> @__clc_vload2_impl_i32__global(i32 %offset, i32 addrspace(1)*
nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <2 x i32> addrspace(1)*
%4 = load <2 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <2 x i32> %4
}
Pointers on SI are 64-bit. This ptrtoint, add, inttoptr sequence should be
replaced with a getelementptr and a bitcast.</pre>
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