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<p>In 3.1, the backend is very slow to legalize types. </p>
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<p>Following is the code snippet which may be the culprit:</p>
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<div> %Result.i.i.i97 = alloca i33, align 8<br>
%Result.i.i.i96= alloca i33, align 8<br>
%Result.i.i.i95 = alloca i33, align 8<br>
%Result.i.i.i94 = alloca i33, align 8<br>
%Result.i.i.i93 = alloca i33, align 8<br>
%Result.i.i.i92= alloca i33, align 8<br>
%Result.i.i.i91 = alloca i33, align 8<br>
%Result.i.i.i90 = alloca i33, align 8<br>
%Result.i.i.i89 = alloca i33, align 8<br>
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<p>The compilation time improve significant if running on LLVM 3.9. Unfortunately, it's not a choice for me now to upgrade it to 3.9.</p>
<p>If anyone luckily to know what's the evolution in this area to improve the compilation time performance, pls kindly comments.</p>
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<p>thanks</p>
<p>Xiaoyong</p>
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