[PATCH] D70508: Fix an offset underflow bug in DwarfExpression when describing small values with subregisters

Thu Nov 21 08:38:25 PST 2019

aprantl added a comment.

In D70508#1754479 <https://reviews.llvm.org/D70508#1754479>, @jyknight wrote:

> The test dwarf-size-field-overflow.test now takes over 60 seconds to run, which seems quite excessive.
>
> Is there no way to test this in a less-expensive manner?

I almost halved the number of iterations in 1b9ef. On my iMac Pro in Release+Asserts it's running in 1.18s wall clock time now. Note however that even before my change it was only taking ~5s. Were you measuring a debug build?

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  https://reviews.llvm.org/D70508/new/

https://reviews.llvm.org/D70508