https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117248
--- Comment #20 from John David Anglin <danglin at gcc dot gnu.org> --- It appears I again forgot to add -mlra to the compile command. The problem is clear in the generated assembly code: extrs %r5,31,16,%r26 extrs %r24,31,16,%r7 copy %r7,%r25 .IMPORT $$divI,MILLICODE bl $$divI,%r31 nop stws %r29,-16(%sp) fldws -16(%sp),%fr10R copy %r7,%r25 bl $$remI,%r31 nop The first millicode call to $$divI clobbers r1, r25, r26 and r31. r25 and r26 are the input arguments. The same is true for the call to $$remI. But the instruction to set r26 is dropped during reload: deleting insn with uid = 341.