[GHC] #13540: Enable -msse2 by default on i386
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: task | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- SSE2 has been around for nearly 15 years now and at this point it is supported nearly universally. Currently we pass `-msse2` to numerically- sensitive testsuite tests since x87 is too imprecise. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: task | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: (none) => bgamari -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: task | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari <ben@…>): In [changeset:"e5e07be2df1a0d6f1cb47e9d301053445020589c/ghc" e5e07be/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="e5e07be2df1a0d6f1cb47e9d301053445020589c" base: Run num009 with -msse2 on i386 x87's transcendental instructions are terribly imprecise and fail this test. Moreover, we really ouch to enable -mse2 on i386 by default as it is nearly universally supported at this point. See #13540. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: task | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8949 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by MikolajKonarski): * related: => #8949 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: task | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8949 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Phyx-): Just want to point out that neither the linux elf nor Windows GHCi linkers (non-dynamic way) currently honor section alignment. so using SSE2 more aggressively would likely cause issues here. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#13540: Enable -msse2 by default on i386 -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: task | Status: closed Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #8949 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => duplicate Comment: Indeed this is a duplicate of #8949. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13540#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
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