While doing a bunch of experiments with randomly constructed sets of
optimization flags, I ran into the following compilation error while trying to
build SPEC CPU2000's 252.eon:
internal compiler error: in insert_save, at caller-save.c:1122
The problem occurs during compilation of various of the benchmark's C++ source
files, mainly for mrSpotAreaXYDiskLuminaire.cc and mrGrid.cc, while using any
of the following combination of flags:
-O1 -fno-ira-share-save-slots -fcaller-saves
-O2 -fno-ira-share-save-slots
-O3 -fno-ira-share-save-slots
-Os -fno-ira-share-save-slots
I've created a significantly reduced testcase using delta (attached).
Reproducing the error should be as simple as the line below, using g++ 4.4.1:
g++ -O2 -fno-ira-share-saved-spill-slots testcase.ii
--
Summary: ICE in insert_save (caller-save.c) for SPEC CPU2000's
252.eon
Product: gcc
Version: 4.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kenneth dot hoste at elis dot ugent dot be
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41619
