Port "Make array copy primops inline" and related patches to new codegen.

[ghc-hetmet.git] / compiler / codeGen / CgPrimOp.hs

diff --git a/compiler/codeGen/CgPrimOp.hs b/compiler/codeGen/CgPrimOp.hs
index fa7287d..82f7d65 100644 (file)
--- a/compiler/codeGen/CgPrimOp.hs
+++ b/compiler/codeGen/CgPrimOp.hs
@@ -638,6 +638,13 @@ setInfo closure_ptr info_ptr = CmmStore closure_ptr info_ptr
 -- ----------------------------------------------------------------------------
 -- Copying pointer arrays
 
+-- EZY: This code has an unusually high amount of assignTemp calls, seen
+-- nowhere else in the code generator.  This is mostly because these
+-- "primitive" ops result in a surprisingly large amount of code.  It
+-- will likely be worthwhile to optimize what is emitted here, so that
+-- our optimization passes don't waste time repeatedly optimizing the
+-- same bits of code.
+
 -- | Takes a source 'Array#', an offset in the source array, a
 -- destination 'MutableArray#', an offset into the destination array,
 -- and the number of elements to copy.  Copies the given number of