1; RUN: opt < %s -instcombine -S | grep 0.0 | count 1
2
3declare double @abs(double)
4
5define double @test(double %X) {
6  %Y = fadd double %X, 0.0          ;; Should be a single add x, 0.0
7  %Z = fadd double %Y, 0.0
8  ret double %Z
9}
10
11define double @test1(double %X) {
12  %Y = call double @abs(double %X)
13  %Z = fadd double %Y, 0.0
14  ret double %Z
15}
16