[Bug libgcc/94220] New: libgcc FTB for ARM Thump when optimizing for size

[npl at chello dot at]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94220

            Bug ID: 94220
           Summary: libgcc FTB for ARM Thump when optimizing for size
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: npl at chello dot at
                CC: rearnsha at arm dot com
  Target Milestone: ---

This issue was introduced with 6b9ce2b4eb49e3c930730c3721323349e2136b1a,
the sections guarded with __OPTIMIZE_SIZE__ where apparently left out

/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1139: Error:
cannot honor width suffix -- `mul r2,r0'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1140: Error:
cannot honor width suffix -- `sub r1,r1,r2'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1238: Error:
MOV Rd, Rs with two low registers is not permitted on this architecture -- `mov
work,dividend'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1239: Error:
cannot honor width suffix -- `eor work,divisor'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1241: Error:
cannot honor width suffix -- `mov curbit,#1'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1242: Error:
cannot honor width suffix -- `mov result,#0'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1245: Error:
cannot honor width suffix -- `neg divisor,divisor'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1249: Error:
cannot honor width suffix -- `neg dividend,dividend'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1256: Error:
MOV Rd, Rs with two low registers is not permitted on this architecture -- `mov
r0,result'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1260: Error:
cannot honor width suffix -- `neg r0,r0'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1351: Error:
cannot honor width suffix -- `mul r2,r0'
/tmp/b/.build/arm-none-eabi/src/gcc/libgcc/config/arm/lib1funcs.S:1352: Error:
cannot honor width suffix -- `sub r1,r1,r2'

(Fix is rather straightforward: add an 's' to every op)