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@minjang
Last active November 29, 2016 01:00
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After mem2reg, gvn, and inline optimizations
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
}
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