After mem2reg, gvn, and inline optimizations

swap-mem2reg-gvn-inline.ll

define i32 @_Z4testv() #0 {
entry:
  %a = alloca i32, align 4
  %b = alloca i32, align 4
  %call = call i32 @_Z3getv()             ; int a = get();
  store i32 %call, i32* %a, align 4
  %call1 = call i32 @_Z3getv()            ; int b = get();
  store i32 %call1, i32* %b, align 4
  %0 = load i32, i32* %a, align 4         ; temp_swap(a, b);
  %1 = load i32, i32* %b, align 4
  store i32 %1, i32* %a, align 4
  store i32 %0, i32* %b, align 4
  %2 = load i32, i32* %b, align 4         ; xor_swap(a, b);
  %3 = load i32, i32* %a, align 4
  %xor.i = xor i32 %3, %2
  store i32 %xor.i, i32* %a, align 4
  %4 = load i32, i32* %b, align 4
  %xor1.i = xor i32 %4, %xor.i
  store i32 %xor1.i, i32* %b, align 4
  %5 = load i32, i32* %a, align 4
  %xor2.i = xor i32 %5, %xor1.i
  store i32 %xor2.i, i32* %a, align 4
  %6 = load i32, i32* %a, align 4         ; return process(a, b);
  %7 = load i32, i32* %b, align 4
  %call2 = call i32 @_Z7processii(i32 %6, i32 %7)
  ret i32 %call2
}