#7554: Define __SSE__ when compiling with -msse
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Reporter: tibbe | Owner:
Type: feature request | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Blockedby:
Blocking: | Related:
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The hashable package needs to know if GHC was invoked with -msse4.1 so it
can call out to faster C code in that case. I'd like to propose that GHC
provides the following defines when running the preprocessor:
{{{
## If SSE is turned on at all:
#define __SSE__ 1
## Only with -msse2 and up:
#define __SSE2__ 1
## Only with -msse4.1 and up:
#define __SSE4_1__ 1
}}}
This behavior is consistent with GCC.
Note that on some platforms SSE2 might be enabled by default and so should
the defines.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7554>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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