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Re:GHC 7 is out: Haskell 2010 support; LLVM backend; new opt... by dons on Monday November 15, 2010 @08:08PM (#1908637)
GHC's inliner -- which does lots of algebraic transformations of the Haskell code to make it fast.

That all happens before getting shunted off to LLVM, which in turn does a lot of block-level changes (which particularly affect numeric code).

Re:GHC 7 is out: Haskell 2010 support; LLVM backend; new opt... by mainland on Tuesday November 16, 2010 @09:25AM (#1910113)
Are there any references that detail the new inliner?