yazdanbakhsh <amir.yazdanbak...@gmail.com> writes: > I'm working on my a gcc compiler for my own written processor with the help > of SimpleScalar. > I want to remove "srav/slav" (immediate arithmetic shift) from the > instruction set. I explore ss.md file but I didn't see any define_ins for > the mentioned instructions, but they are used in other instruction > definitions. > It is also exist for addi/addui. Where I can find the definitions of these > instructions? I want to force gcc to just use register shift and register > add.
There is no ss.md file in the standard gcc distribution. If SimpleScalar has a gcc port, I don't know anything about it. So it's hard to answer to your question precisely. Instructions can come from either a .md file or a .c file in the config/CPU directory used for your CPU. If those instructions are appearing in the generated assembler, then they must be in there somewhere. Ian
