On Wed, 30 May 2007, Linus Torvalds wrote: > > With this, gcc can just generate: > > movzbl (%rdi), %eax > ... Btw, in the kernel we have a rule for *.c -> *.s files exactly because it's nice to be able to easily say "ok, what does that generate". Here's a patch to add such a rule to git too, in case anybody is interested. It makes it much simpler to just do make sha1_file.s and look at the compiler-generated output that way, rather than having to fire up gdb on the resulting binary. (Add -fverbose-asm or something if you want to, it can make the result even more readable) Linus --- diff --git a/Makefile b/Makefile index 7527734..7ffb803 100644 --- a/Makefile +++ b/Makefile @@ -846,6 +846,8 @@ git$X git.spec \ %.o: %.c GIT-CFLAGS $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) $< +%.s: %.c GIT-CFLAGS + $(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $< %.o: %.S $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) $< - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
