------- Comment #7 from carrot at google dot com 2009-06-17 09:30 ------- My command line option is -O2 -Os -mthumb
The compiler didn't run into load_multiple_sequence and store_multiple_sequence. The peephole rules specified it applies to TARGET_ARM only. Is there any special reason we didn't enable it in thumb mode? For the ascending register number, do we have any code to rename a set of registers to make them ascending? In the generated code for the second function, the register numbers have different order compared with memory offsets. ldr r2, [r0, #4] ldr r3, [r0] -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40457
