[commit: ghc] master: SrcLoc: Eliminate constructors of RealSrcSpan (987426c)
Simon Peyton Jones
simonpj at microsoft.com
Mon Dec 21 08:42:41 UTC 2015
1% is huge! Good to do.
| -----Original Message-----
| From: Ben Gamari [mailto:ben at well-typed.com]
| Sent: 19 December 2015 11:51
| To: Simon Peyton Jones <simonpj at microsoft.com>; ghc-devs at haskell.org
| Subject: RE: [commit: ghc] master: SrcLoc: Eliminate constructors of
| RealSrcSpan (987426c)
| Simon Peyton Jones <simonpj at microsoft.com> writes:
| > Does this change yield any benefits? Eg. if we can now unbox SrcLoc
| does something go faster?
| Compiler allocations in the testsuite decrease between 0 and 1% .
| Moreover, it still seemed like a reasonable clean-up given it is a net
| reduction in code length with no loss of clarity.
| - Ben
|  https://perf.haskell.org/ghc/#table-6
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