Clarification, On Wed, 2012-02-01 at 23:53 +0100, Martin Millnert wrote: > Hi gcc-help, > > I have a question regarding an optimization example for the Sandy Bridge > march. > > In the Intel 64 and IA-32 Architectures Optimization Reference Manual > [1] on page 183, sec 3.6.1.2, there is a piece about optimizing L1D This should be 3.6.1.1, on p. 181. What I'm looking for is a way to make GCC produce code that alternates register dependencies, such that the double load ports of the architecture can be utilized, as in RHS of example on page 3-32 (182). Regards, Martin