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[Bug rtl-optimization/65078] New: [5.0 Regression] 4.9 and 5.0 generate more spill-fill in comparison with 4.8.2
- From: "ysrumyan at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 16 Feb 2015 14:17:51 +0000
- Subject: [Bug rtl-optimization/65078] New: [5.0 Regression] 4.9 and 5.0 generate more spill-fill in comparison with 4.8.2
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65078
Bug ID: 65078
Summary: [5.0 Regression] 4.9 and 5.0 generate more spill-fill
in comparison with 4.8.2
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Using attached simple test-case extracted from codec we found out that 4.8.2
compiler generates more compact binaries in comparison with 4.9 & 5.0 compilers
('-O3 -msse2 -m32" options were used), for example
grep -c "%esp" t1.4.8.2.s
25
grep -c "%esp" t1.trunk.s
75