On 10/04/2012 05:43 AM, Steven Bosscher wrote:
On Wed, Oct 3, 2012 at 5:35 PM, Steven Bosscher <stevenb....@gmail.com> wrote:
The "worst" result is this:
Compressing live ranges: from 726174 to 64496 - 8%, pre_count 40476128,
post_count 12483414
But that's still a lot better than before the patch for the same function:
Compressing live ranges: from 1742569 to 73069 - 4%, pre_count 40842330,
post_count 12479992
Walking basic blocks with FOR_EACH_BB_REVERSE gives:
Only FOR_EACH_BB_REVERSE:
Compressing live ranges: from 1742579 to 429746 - 24% pre_count
41106212, post_count 34376494
Compressing live ranges: from 1742569 to 63000 - 3% pre_count
40835340, post_count 11055747
FOR_EACH_BB_REVERSE + need_curr_point_incr:
Compressing live ranges: from 726184 to 416529 - 57% pre_count
40743516, post_count 34376846
Compressing live ranges: from 726174 to 61840 - 8% pre_count 40472806,
post_count 11055747
The combination of the two changes takes ~20s off the ~180s for "LRA
create live ranges".
Wow. I did not have such effect. What machine do you use?
