Chris Lattner
d2bf432b2b
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145171 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 06:54:59 +00:00
Bill Wendling
d336de318e
As Dan pointed out, movzbl, movsbl, and friends are nicer than their alias
...
(movzx/movsx) because they give more information. Revert that part of the patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129498 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14 01:46:37 +00:00
Bill Wendling
c6df9883da
Have the X86 back-end emit the alias instead of what's being aliased. In most
...
cases, it's much nicer and more informative reading the alias.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129497 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14 01:11:51 +00:00
Evan Cheng
81d22d87de
Re-enable extension optimization pass.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93313 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-13 08:45:40 +00:00
Evan Cheng
262a96edb4
Disable opt-ext pass to unbreak the build for now.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93286 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-13 01:51:43 +00:00
Evan Cheng
7da9ecf967
Add a quick pass to optimize sign / zero extension instructions. For targets where the pre-extension values are available in the subreg of the result of the extension, replace the uses of the pre-extension value with the result + extract_subreg.
...
For now, this pass is fairly conservative. It only perform the replacement when both the pre- and post- extension values are used in the block. It will miss cases where the post-extension values are live, but not used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93278 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-13 00:30:23 +00:00
