https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67213
--- Comment #6 from Fredrik Hederstierna <fredrik.hederstie...@securitas-direct.com> --- Same thing for x86, not only ARM: bash# gcc --version gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609 bash# gcc -c test.c -Os --param max-completely-peel-times=5 bash# objdump -dath test.o Disassembly of section .text: 000000000000000f <test_iter_6>: f: c6 05 00 00 00 00 00 movb $0x0,0x0(%rip) # 16 <test_iter_6+0x7> 16: c6 05 00 00 00 00 01 movb $0x1,0x0(%rip) # 1d <test_iter_6+0xe> 1d: c6 05 00 00 00 00 02 movb $0x2,0x0(%rip) # 24 <test_iter_6+0x15> 24: c6 05 00 00 00 00 03 movb $0x3,0x0(%rip) # 2b <test_iter_6+0x1c> 2b: c6 05 00 00 00 00 04 movb $0x4,0x0(%rip) # 32 <test_iter_6+0x23> 32: c6 05 00 00 00 00 05 movb $0x5,0x0(%rip) # 39 <test_iter_6+0x2a> 39: c3 retq bash# gcc -c test.c -Os --param max-completely-peel-times=4 bash# objdump -dath test.o Disassembly of section .text: 000000000000000f <test_iter_6>: f: 31 c0 xor %eax,%eax 11: 88 80 00 00 00 00 mov %al,0x0(%rax) 17: 48 ff c0 inc %rax 1a: 48 83 f8 06 cmp $0x6,%rax 1e: 75 f1 jne 11 <test_iter_6+0x2> 20: c3 retq
