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| author | Herbert Valerio Riedel <hvr@gnu.org> | 2016-04-10 19:13:16 +0200 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-04-10 22:58:27 +0200 |
| commit | d2e05c6bd0834421b0c48b3c4287fbe6ee889966 (patch) | |
| tree | 7aafdfa45ac21ce4772ad7a7e20d87bbb7fc152e /compiler/nativeGen/X86 | |
| parent | 2f82da761defba2cfdc55ca08d774ca7e1240463 (diff) | |
| download | haskell-d2e05c6bd0834421b0c48b3c4287fbe6ee889966.tar.gz | |
Reduce default for -fmax-pmcheck-iterations from 1e7 to 2e6
The commit 28f951edfe50ea5182065144340061ec326781f5 introduced the
`-fmax-pmcheck-iterations` flag and set the default limit to 1e7
iterations.
However, this value is still high enough that it can result GHC to
exhibit memory spikes beyond 1 GiB of RAM usage (heap profile showed
several `(:)`s, as well as `THUNK_2_0`, and `PmCon` during the memory
spikes)
A value of 2e6 seems to be a safer upper bound which still manages to
let the checker not run into the limit in most cases.
Test Plan: Validate, try building a few Hackage packages
Reviewers: austin, gkaracha, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2095
Diffstat (limited to 'compiler/nativeGen/X86')
| -rw-r--r-- | compiler/nativeGen/X86/CodeGen.hs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/compiler/nativeGen/X86/CodeGen.hs b/compiler/nativeGen/X86/CodeGen.hs index 2d22734378..cd45d92418 100644 --- a/compiler/nativeGen/X86/CodeGen.hs +++ b/compiler/nativeGen/X86/CodeGen.hs @@ -1,5 +1,11 @@ {-# LANGUAGE CPP, GADTs, NondecreasingIndentation #-} +-- The default iteration limit is a bit too low for the definitions +-- in this module. +#if __GLASGOW_HASKELL__ >= 800 +{-# OPTIONS_GHC -fmax-pmcheck-iterations=10000000 #-} +#endif + ----------------------------------------------------------------------------- -- -- Generating machine code (instruction selection) |