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)
