https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70416
--- Comment #12 from Kazumoto Kojima <kkojima at gcc dot gnu.org> --- Created attachment 38105 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38105&action=edit reduced test case for -O2 -fpic reload1.c:reload_as_needed function generates the error message with error_for_asm when checking if reload insns are valid. The problematic reload insn is: (gdb) fr 1 #1 0x08636702 in reload_as_needed (live_known=live_known@entry=1) at ../../ORIG/trunk/gcc/reload1.c:4698 4698 "impossible reload"); (gdb) call debug_rtx(p) (insn 516 508 510 18 (set (reg:SI 0 r0) (plus:SI (reg:SI 2 r2) (const_int 4 [0x4]))) xxx.i:100 67 {*addsi3} (nil)) which is invalid. Looks that that complex asm expression requires an invalid add insn on SH to reload its operand of that asm insn. Unfortunately I have no idea to fix this issue.
