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References: <bug-44423-2736@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/44423] [4.5/4.6 Regression] Massive performance regression in SSE code due to SRA
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------- Comment #5 from martin at mpa-garching dot mpg dot de  2010-06-08 13:54 -------
(In reply to comment #2)
> We have (4.4):
> 
> <bb 2>:
>   va.f[0] = a->r;
>   va.f[1] = a->g;
>   va.f[2] = a->b;
>   va.f[3] = 0.0;
>   pretmp.40 = va.v;
>   ivtmp.61 = 0;

[...]

Could you please tell me the compiler flag(s) needed to produce this kind of
information? That seems much more useful for debugging and chasing performance
bottlenecks than assembler dumps...


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44423