On 05/12/2018 07:01 PM, Jeff Law wrote: > No. We're not supposed to have any auto-inc insns prior to the auto-inc > pass. A stack push/pop early in the compiler would have to be > represented by a PARALLEL. > > It's been this way forever. It's documented in the internals manual > somewhere.
Sorry, but you're misremembering this. Stack pushes/pops were always represented with autoinc, these being the only exception to the rule you remember. You can easily verify this by looking at a .expand dump from a 32-bit i386 compiler - I just did so with 2.95 and 6.4. It's all pre_dec for argument passing. Bernd
