Re: [PATCH v2 4/6] compiler-gcc.h: add asm_inline definition

[Segher Boessenkool]

On Thu, Sep 12, 2019 at 02:54:50PM -0700, Nick Desaulniers wrote:
> I have seen instances where instruction selection fails to select the
> appropriate way to branch when inline asm size is misjudged, resulting
> in un-encodeable jumps (as in the branch target is too far to be
> encoded in the number of bits of a single jump/branch instruction).

"asm inline" *only* influences the estimated size *for inlining
purposes*.  Not for anything else.  Everything else still uses
conservative estimates.


Segher