Commit aab59374 authored by Simon Marlow's avatar Simon Marlow

update comment

parent 028630ab
......@@ -326,10 +326,9 @@ _GLOBAL_OFFSET_TABLE_, regardless of which entry point we arrived via.
{- Note [unreachable blocks]
The control-flow optimiser sometimes leaves unreachable blocks behind
containing junk code. If these blocks make it into the native code
generator then they trigger a register allocator panic because they
refer to undefined LocalRegs, so we must eliminate any unreachable
blocks before passing the code onwards.
containing junk code. These aren't necessarily a problem, but
removing them is good because it might save time in the native code
generator later.
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment