Chris Lattner bd38edfe23 If a global is just loaded and restored, realize that it is not changing
value.  This allows us to turn more globals into constants and eliminate them.
This patch implements GlobalOpt/load-store-global.llx.

Note that this patch speeds up 255.vortex from:

Output/255.vortex.out-cbe.time:program 7.640000
Output/255.vortex.out-llc.time:program 9.810000

to:

Output/255.vortex.out-cbe.time:program 7.250000
Output/255.vortex.out-llc.time:program 9.490000

Which isn't bad at all!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17746 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14 20:50:30 +00:00
..
2004-11-13 23:32:53 +00:00
2004-11-14 06:57:47 +00:00
2004-10-07 06:00:24 +00:00