https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63735
Bug ID: 63735
Summary: [5.0 regression] >5% code size regression since
2014/10/13
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
Target: arm aarch64
Since 2014/10/13 there have been a number of commits that have contributed to a
significant overall code-size regression at -Os. The numbers (building CSiBE)
for Thumb2 are:
2014/10/13 2538705
2014/10/14 2539189
2014/10/20 2677449
2014/10/21 2677449
2014/10/22 2677449
2014/10/23 2677449
2014/10/24 2677421
2014/10/27 2684943
2014/10/28 2684943
2014/10/29 2684943
2014/10/30 2684943
2014/10/31 2685049
2014/11/03 2685124
Overall that's an increase of 5.76% in 2 weeks, but most of this is between the
14 and the 20th October (no successful builds in that time period).
The regression is similar for both ARM and AArch64 with all optimization levels
and target cpu options.
In addition to the code size regression there has also been a compile time
regression of ~15%.
