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Mark by-value parameters that are passed on the stack as nocapture #12494

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Mark by-value parameters that are passed on the stack as nocapture #12494

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1 change: 1 addition & 0 deletions src/librustc/middle/trans/base.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,7 @@ pub fn decl_rust_fn(ccx: &CrateContext, has_env: bool,
if !type_is_immediate(ccx, arg_ty) {
unsafe {
llvm::LLVMAddAttribute(llarg, lib::llvm::NoAliasAttribute as c_uint);
llvm::LLVMAddAttribute(llarg, lib::llvm::NoCaptureAttribute as c_uint);
}
}
}
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