https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97078
Bug ID: 97078
Summary: [11 Regression] ICE in set_rtl building glibc tests
with -ffloat-store
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
CC: ebotcazou at gcc dot gnu.org
Target Milestone: ---
Target: alpha*-*-* s390*-*-* sparc*-*-*
Created attachment 49230
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49230&action=edit
preprocessed source
Compile the attached test (from the glibc testsuite) for alpha-linux-gnu with
-S -O2 -ffloat-store (you may need -mlong-double-128 as well depending on the
configuration of your cross compiler). The following ICE was introduced by
commit a7d8dcdf2f3cf9a801e655f2eec3967a3a3ba666, "Fix dangling references in
thunks at -O0" (bisection done and preprocessed source generated for alpha; the
same ICE also appears building the glibc testsuite for s390 and 32-bit sparc,
likely with the same cause).
during RTL pass: expand
In file included from
/scratch/jmyers/glibc/many11/build/glibcs/alpha-linux-gnu/glibc/math/libm-test-support-ldouble.c:2:
./libm-test-support.c: In function 'print_float':
./libm-test-support.c:259:1: internal compiler error: in set_rtl, at
cfgexpand.c:199
0x734169 set_rtl
/scratch/jmyers/glibc/many11/src/gcc/gcc/cfgexpand.c:178
0x73a239 set_parm_rtl(tree_node*, rtx_def*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/cfgexpand.c:1312
0x8ce172 assign_parm_setup_reg
/scratch/jmyers/glibc/many11/src/gcc/gcc/function.c:3379
0x8d1846 assign_parms
/scratch/jmyers/glibc/many11/src/gcc/gcc/function.c:3685
0x8d1846 expand_function_start(tree_node*)
/scratch/jmyers/glibc/many11/src/gcc/gcc/function.c:5129
0x74728f execute
/scratch/jmyers/glibc/many11/src/gcc/gcc/cfgexpand.c:6464
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
