https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78675
Bug ID: 78675
Summary: [7 Regression] ICE: verify_gimple failed (error:
integral result type precision does not match field
size of BIT_FIELD_REF)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-pc-linux-gnu
gcc-7.0.0-alpha20161127 and gcc-7.0.0-alpha20161204 snapshots ICE when
compiling the following reduced snippet w/ -O3 (or -Ofast) -mavx512[??]:
long int br;
long int
cm (long int og)
{
long int yh;
while (br < 1)
{
yh = br && og;
++br;
}
return yh;
}
% x86_64-pc-linux-gnu-gcc-7.0.0-alpha20161204 -O3 -mavx512bw -c uwzruiav.c
uwzruiav.c: In function 'cm':
uwzruiav.c:4:1: error: integral result type precision does not match field size
of BIT_FIELD_REF
cm (long int og)
^~
BIT_FIELD_REF <mask__13.15_57, 8, 56>
cc1: note: in statement
_51 = BIT_FIELD_REF <mask__13.15_57, 8, 56>;
uwzruiav.c:4:1: internal compiler error: verify_gimple failed
