DMD buggy optimizing

Sat Apr 29 02:10:35 PDT 2006

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Walter Bright schrieb am 2006-04-29:
> The D optimizer is the same one as the DMC++ one that has been around 
> for 20 years and several hundred thousand users. I run across an actual 
> optimizer bug maybe once a year now. D benefits a lot from its maturity.
>
> Many "optimizer" bugs turn out to be code bugs that exhibit different 
> behavior when the optimizer rearranges things, hence it may appear to 
> "work" unoptimized and fail optimized. The classic example of that is a 
> wild pointer.

PASS (no flag) -> FAIL (-O)
http://dstress.kuehne.cn/run/bug_cg87_2393_A.d
http://dstress.kuehne.cn/run/bug_cg87_2393_B.d
http://dstress.kuehne.cn/run/bug_cg87_2393_C.d
http://dstress.kuehne.cn/run/bug_cg87_2393_D.d
http://dstress.kuehne.cn/run/c/cdouble_01_A.d
http://dstress.kuehne.cn/run/c/cfloat_02_A.d
http://dstress.kuehne.cn/run/r/real_26_B.d
http://dstress.kuehne.cn/run/r/real_26_C.d
http://dstress.kuehne.cn/run/r/real_26_D.d

PASS (no flag) -> ERROR (-inline)
http://dstress.kuehne.cn/run/for_04.d
http://dstress.kuehne.cn/run/for_05.d
http://dstress.kuehne.cn/run/foreach_28.d
http://dstress.kuehne.cn/run/foreach_29.d

PASS (no flag) -> FAIL (-inline)
http://dstress.kuehne.cn/run/i/if_14_A.d
http://dstress.kuehne.cn/run/i/if_14_H.d
http://dstress.kuehne.cn/run/i/inline_10_A.d
http://dstress.kuehne.cn/run/i/inline_13_A.d
http://dstress.kuehne.cn/run/i/inline_14_A.d

FAIL (no flag) -> PASS (-inline)
http://dstress.kuehne.cn/run/m/mixin_14_A.d
http://dstress.kuehne.cn/run/m/mixin_14_B.d
http://dstress.kuehne.cn/run/m/mixin_14_C.d
http://dstress.kuehne.cn/run/m/mixin_14_D.d

Thomas


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