Displaying 1 result from an estimated 1 matches for "ae27f7d6".
2015 Nov 10
2
[RFC] A new intrinsic, `llvm.blackbox`, to explicitly prevent constprop, die, etc optimizations
One thing that volatile doesn't do is escape results that have been written
to memory.
The proposed blackbox intrinsic is modeled as reading and writing any
pointed to memory, which is useful.
I also think blackbox will be a lot easier for people to use than empty
volatile inline asm and volatile loads and stores. That alone seems worth
something. :)
On Mon, Nov 9, 2015 at 6:04 PM, Daniel