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C51/V6.22 OPTIMIZING-PROBLEM

We currently use the µVision 1 environment includig C51/V5.xx.

We now want to update to µVision-2 / C51 V6.22.

Cause we want to be sure the new version works without any problems we are currently testing the new version before using it for our developments.

The import-feature of µV-2 works proper, but when we want to use the new optimizing-levels 7, 8 and 9 of the compiler, the code would be compiled without an error but doesn't work correctly.

When limiting the optimizing-level to 6, also µV-2 will produce "working" code.

Has anybody made similar experiences?
Are there any known bugs in version 6.22?

Best regards
Andy

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