https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112918
Bug ID: 112918
Summary: [m68k] [LRA] ICE: maximum number of generated reload
insns per insn achieved (90)
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: sch...@linux-m68k.org
Target Milestone: ---
Target: m68k-*-*
When enabling LRA on m68k the compiler ICEs when compiling libstdc++:
$ ../../../../gcc/xgcc -shared-libgcc -B../../../../gcc -nostdinc++ -L..
-L../.libs -L../../libsupc++/.libs -I../../../../../libstdc++-v3/../libgcc
-I../../include/m68k-linux -I../../include
-I../../../../../libstdc++-v3/libsupc++ -std=gnu++17 -nostdinc++
-D_GLIBCXX_SHARED -fno-implicit-templates -Wall -Wextra -Wwrite-strings
-Wcast-qual -Wabi=2 -fdiagnostics-show-location=once -ffunction-sections
-fdata-sections -frandom-seed=floating_from_chars.lo -fimplicit-templates -g
-O2 -D_GNU_SOURCE -c
../../../../../libstdc++-v3/src/c++17/floating_from_chars.cc -fPIC -DPIC
-D_GLIBCXX_SHARED -o floating_from_chars.o
during RTL pass: reload
../../../../../libstdc++-v3/src/c++17/floating_from_chars.cc: In function
‘std::from_chars_result std::__from_chars_float16_t(const char*, const char*,
float&, chars_format)’:
../../../../../libstdc++-v3/src/c++17/floating_from_chars.cc:1289:1: internal
compiler error: maximum number of generated reload insns per insn achieved (90)
1289 | }
| ^
0xed33c0 lra_constraints(bool)
../../gcc/lra-constraints.cc:5429
0xeba98a lra(_IO_FILE*, int)
../../gcc/lra.cc:2440
0xe688c7 do_reload
../../gcc/ira.cc:5973
0xe688c7 execute
../../gcc/ira.cc:6161
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
