mike.dvoretsky added inline comments.
================
Comment at: clang/lib/CodeGen/CGBuiltin.cpp:8307
+ Dst = Ops[0];
+ Mask = llvm::ConstantInt::get(CGF.Builder.getInt32Ty(), 1);
+ } else {
----------------
craig.topper wrote:
> I'm not sure we should even try to emit a mask for the legacy scalar
> intrinsics. Does this get removed well by the middle or backend?
The masking is done to represent all operations handled here in a uniform way.
D45203 removes it in the backend.
https://reviews.llvm.org/D45202
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