Re: [Mesa-dev] [PATCH 5/6] i965/fs: Give up in interference check if we see a WHILE.

2014-04-17 Thread Kenneth Graunke
On 04/16/2014 11:07 AM, Matt Turner wrote: > Rather than any old control flow. Muchnick's algorithm just checks for > interfering writes between the MOV and the end of the program. Handling > this when you have backward branches is hard, so don't, but there's no > reason to bail if you see forward

[Mesa-dev] [PATCH 5/6] i965/fs: Give up in interference check if we see a WHILE.

2014-04-16 Thread Matt Turner
Rather than any old control flow. Muchnick's algorithm just checks for interfering writes between the MOV and the end of the program. Handling this when you have backward branches is hard, so don't, but there's no reason to bail if you see forward branches. instructions in affected programs: 4