[llvm-commits] [llvm] r75220 - /llvm/trunk/lib/Target/ARM/README-Thumb.txt

[Evan Cheng]

Author: evancheng
Date: Thu Jul  9 21:10:17 2009
New Revision: 75220

URL: http://llvm.org/viewvc/llvm-project?rev=75220&view=rev
Log:
More info about Thumb1 predication support.

Modified:
    llvm/trunk/lib/Target/ARM/README-Thumb.txt

Modified: llvm/trunk/lib/Target/ARM/README-Thumb.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/README-Thumb.txt?rev=75220&r1=75219&r2=75220&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/README-Thumb.txt (original)
+++ llvm/trunk/lib/Target/ARM/README-Thumb.txt Thu Jul  9 21:10:17 2009
@@ -236,4 +236,5 @@
 //===---------------------------------------------------------------------===//
 
 We need to make (some of the) Thumb1 instructions predicable. That will allow
-shrinking of predicated Thumb2 instructions.
+shrinking of predicated Thumb2 instructions. To allow this, we need to be able
+to toggle the 's' bit since they do not set CPSR when they are inside IT blocks.