On 10/20/2015 10:15 AM, Andrew Haley wrote:
But in that case, what do we guarantee.
We certainly don't guarantee that those objects will be in their
requested register at any point other than at the asm statements.
OK, but this usage did work in the past: that it now doesn't is a
regression. GCC was quite useful (unique, really) in that it provided
a way to write a decent bytecode interpreter in a HLL. The world has
lost something significant if this no longer works.
It still works, but again, it's not a guarantee, never has been.
bz21182 has a testcase that's still helped by local register variables.
Jeff
