Re: RFC: integer division by multiply with invariant reciprocal

2007-03-25 Thread Charles J. Tabony
> So I think that the easiest way to integrate this with the rest of the > compiler is to have a target hook that emits trees to compute SHIFT, INV1 > and INV2. (define_tree_expand "name" "condition" { preparation statements; } ) :-)

IRA undoing scheduling decisions

2009-08-24 Thread Charles J. Tabony
ld like me to provide? Thank you, Charles J. Tabony

Re: IRA undoing scheduling decisions

2009-08-25 Thread Charles J. Tabony
Adam Nemet wrote: > "Charles J. Tabony" writes: > > I see the same difference between GCC 4.3.2 and 4.4.0 when compiling > > for PowerPC, MIPS, ARM, and FR-V. > > I can confirm this with mainline on MIPS/Octeon. Can you please file a > bug. File

Collapsing control-flow that leads to undefined behavior

2009-10-06 Thread Charles J. Tabony
ge and any control-flow post-dominated by that edge? Thank you, Charles J. Tabony