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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 0.0 | count 1 declare double @abs(double) define double @test(double %X) { %Y = add double %X, 0.0 ;; Should be a single add x, 0.0 %Z = add double %Y, 0.0 ret double %Z } define double @test1(double %X) { %Y = call double @abs(double %X) %Z = add double %Y, 0.0 ret double %Z }