On Mon, 9 Oct 2006, Simon Peyton-Jones wrote:
Turns out that 'shift' is just too big to be inlined. (It's only called once, but you have exported it too.)
You can see GHC's inlining decisions by saying -ddump-inlinings.
To make GHC keener to inline, use an INLINE pragma, or increase the inlining size threshold e.g. -funfolding-threshold=12
Okay, when I force inlining for shift, (and I even need to do it for shiftR!) then the code is inlined in C. However this isn't the behaviour I want. Ideally the inlining should only happen when/because the second argument of shift is constant and the system knows that it can evaluate the case analysis away and that makes the function small. Am I being too naive on what to expect from my complier or is this reasonable? PS, is there a way to mark an imported instance of a class function (Data.Bits.shift for Data.Word.Word32) to be inlined? -- Russell O'Connor http://r6.ca/ ``All talk about `theft,''' the general counsel of the American Graphophone Company wrote, ``is the merest claptrap, for there exists no property in ideas musical, literary or artistic, except as defined by statute.''