rjmccall added a comment.
The code was dropping all the original l-value information, which includes
alignment. So if you start with an l-value that refers to under-aligned memory
(or over-aligned), we were losing that information on the resulting l-value.
The test case would be something like:
struct __attribute__((packed)) A { int x; };
int test(__global A *a) {
return static_cast<__generic A &>(*a).x; // this load should have alignment
1
}
Repository:
rC Clang
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D55262/new/
https://reviews.llvm.org/D55262
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