"Naveen H. S" <Naveen.S@xxxxxxxxxxxxxxx> writes: > It can be noted that the value at Fdi(label ref) is copied into r7 > register. The r7 register is modified and the branch depends on r7. > However, with tbit peepholes; r7 register is optimized away. > > In an application, r7 register is being used as source in the > sequence after tbit instruction. The above snippet shows that > the r7 value is moved into r2. However, as the r2 value is optimized > away; wrong value is moved into r2 and hence application crashes. > The peep2_reg_dead_p, find_reg_note and other functions were tried > out without much use. Show us the RTL and the define_peephole2. >From what you have described so far peep2_reg_dead_p ought to work. Also, which version of gcc? Ian
