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; RUN: llc -march=x86-64 < %s | not grep negq
; These sequences don't need neg instructions; they can be done with
; a single shift and sub each.
define i64 @foo(i64 %x, i64 %y, i64 %n) nounwind {
%a = sub i64 0, %y
%b = shl i64 %a, %n
%c = add i64 %b, %x
ret i64 %c
}
define i64 @boo(i64 %x, i64 %y, i64 %n) nounwind {
%a = sub i64 0, %y
%b = shl i64 %a, %n
%c = add i64 %x, %b
ret i64 %c
}
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