https://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663
--- Comment #11 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- (In reply to Fredrik Hederstierna from comment #10) > Created attachment 46457 [details] > Testcase from CSiBE teem sources > > Testcase from CSiBE teem sources > Tested with gcc-9.1.0 for ARM 32bit targets. > > Without peephole2 > > 00000000 <nrrdRangeSet>: > 0: e92d407f push {r0, r1, r2, r3, r4, r5, r6, lr} > 4: e2504000 subs r4, r0, #0 > 8: 0a00003f beq 10c <nrrdRangeSet+0x10c> > c: e3510000 cmp r1, #0 > 10: e1a05001 mov r5, r1 > > With peephole2 > > 00000000 <nrrdRangeSet>: > 0: e92d407f push {r0, r1, r2, r3, r4, r5, r6, lr} > 4: e2504000 subs r4, r0, #0 > 8: 0a00003e beq 108 <nrrdRangeSet+0x108> > c: e2515000 subs r5, r1, #0 > > /Fredrik Can you run this through your preprocessor to remove the dependencies on external headers?