pcc added inline comments.
================
Comment at: clang/lib/CodeGen/CGBuiltin.cpp:2195
LoadInst *Load =
- Builder.CreateDefaultAlignedLoad(IntToPtr, /*isVolatile=*/true);
+ Builder.CreateAlignedLoad(IntTy, IntToPtr, CharUnits::fromQuantity(4));
+ Load->setVolatile(true);
----------------
rjmccall wrote:
> Why 4?
__readfsdword is a Windows intrinsic which returns an unsigned long, which
always has size/alignment 4 on Windows.
But now that I think about it I suppose we can get here on other platforms with
MS extensions enabled, so I've changed this to query the alignment.
https://reviews.llvm.org/D27157
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