pragma(inline, true) not very useful in its current state?

[David Nadlinger via Digitalmars-d]

Hi all,

I'm not even referring to the multitude of restrictions in the 
DMD frontend inliner here. When looking into the remaining 2.068 
test failures for LDC, I was surprised to find out that DMD only 
honors pragma(inline, true) when -inline is actually passed on 
the command line.

This seems to be completely against what many people I spoke to 
(including, of course, our resident Mr. 
Why-Can't-D-Be-More-Like-C++, Manu Evans) cite as one of the 
primary use cases for the feature, which is to force inlining of 
certain functions even in debug builds.

What were the reasons behind this decision?

  — David