https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121007
--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Cool, thanks!
121007.c:36:3: warning: 'v4' may be used uninitialized [-Wmaybe-uninitialized]
No clue why it says "may be" there, it obviously *is* used uninitialised,
this is the first time it is used after all, and that code is always
executed. Well, bar() isn't necessarily ever called, it is maybe about that
:-)
It works fine with -mcpu=power{7,8,10} , and it fails in LRA for
-mcpu=power9, as in #c1 .
Considering alt=0 of insn 21: (0) =r (1) %r (2) r
2 Operand reload: losers++
2 Non-pseudo reload: reject+=2
2 Non input pseudo reload: reject++
overall=9,losers=1,rld_nregs=1
Considering alt=1 of insn 21: (0) r (1) r (2) I
overall=0,losers=0,rld_nregs=0
Considering alt=0 of insn 21: (0) =r (1) %r (2) r
1 Operand reload: losers++
1 Non-pseudo reload: reject+=2
1 Non input pseudo reload: reject++
overall=9,losers=1 -- refuse
Considering alt=1 of insn 21: (0) r (1) r (2) I
1 Operand reload: losers++
1 Non-pseudo reload: reject+=2
1 Non input pseudo reload: reject++
overall=9,losers=1 -- refuse
Choosing alt 1 in insn 21: (0) r (1) r (2) I {muldi3}
Changing address in insn 58 r218:DI&0xfffffffffffffff0 on equiv
sfp:DI+0x70&0xfffffffffffffff0
Creating newreg=224, assigning class BASE_REGS to base r224
Creating newreg=225, assigning class BASE_REGS to base r225
(etc., I stopped it before it reached seven digits)
