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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep shl ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast ; This cannot be turned into a sign extending cast! define i64 @test(i64 %X) { %Y = shl i64 %X, 16 ; <i64> [#uses=1] %Z = ashr i64 %Y, 16 ; <i64> [#uses=1] ret i64 %Z }