[llvm-commits] CVS: llvm/lib/Target/README.txt

[Chris Lattner]

Changes in directory llvm/lib/Target:

README.txt updated: 1.1 -> 1.2
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Log message:

add a note


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Diffs of the changes:  (+4 -0)

 README.txt |    4 ++++
 1 files changed, 4 insertions(+)


Index: llvm/lib/Target/README.txt
diff -u llvm/lib/Target/README.txt:1.1 llvm/lib/Target/README.txt:1.2
--- llvm/lib/Target/README.txt:1.1	Fri Feb  3 00:21:43 2006
+++ llvm/lib/Target/README.txt	Fri Feb  3 15:25:23 2006
@@ -64,4 +64,8 @@
 
 //===---------------------------------------------------------------------===//
 
+For dag combiner and instcombine:
+Fold: "A / (B << N)" where B is a power of 2, to "A >> (N + log2(B))".
+Fold: "A % (B << N)" where B is a power of 2, to "A & ((B << N) - 1)".
 
+//===---------------------------------------------------------------------===//