Re: variable tracking vs. delay slots question

2012-09-12 Thread Steve Ellcey
On Tue, 2012-09-11 at 20:20 -0600, Jeff Law wrote: > > These requirements seem to conflict. Am I right about this or are the > > comments wrong or am I confused? I think this problem is the basis of > > bug 54128, a bootstrap failure on MIPS, though the problem seems generic > > to any system wi

Re: variable tracking vs. delay slots question

2012-09-11 Thread Jeff Law
On 09/11/2012 04:33 PM, Steve Ellcey wrote: In some configuration files there is comment that says that the variable tracking pass should be run after all optimizations which change the order of instructions and that it requires a valid control flow graph to work. But my understanding of the del

variable tracking vs. delay slots question

2012-09-11 Thread Steve Ellcey
I have a question about the the variable tracking and the delay slot passes. In some configuration files there is comment that says that the variable tracking pass should be run after all optimizations which change the order of instructions and that it requires a valid control flow graph to work.