subreg-to-reg-3.ll
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
; CHECK: imull
; Don't eliminate or coalesce away the explicit zero-extension!
define i64 @foo(i64 %a) {
%b = mul i64 %a, 7823
%c = and i64 %b, 4294967295
%d = add i64 %c, 1
ret i64 %d
}