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

[Chris Lattner]

Changes in directory llvm/lib/Target:

README.txt updated: 1.10 -> 1.11
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Log message:

Add a note


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Diffs of the changes:  (+17 -0)

 README.txt |   17 +++++++++++++++++
 1 files changed, 17 insertions(+)


Index: llvm/lib/Target/README.txt
diff -u llvm/lib/Target/README.txt:1.10 llvm/lib/Target/README.txt:1.11
--- llvm/lib/Target/README.txt:1.10	Fri Mar  3 19:19:34 2006
+++ llvm/lib/Target/README.txt	Sat Mar  4 02:44:51 2006
@@ -101,3 +101,20 @@
 
 This would be a win on ppc32, but not x86 or ppc64.
 
+//===---------------------------------------------------------------------===//
+
+Pull add through mul/shift to handle this:
+
+int foo(int P[4][4], int i) {
+  return P[i+2][1];
+}
+
+better than this (no addi needed):
+
+_foo:
+        addi r2, r4, 2
+        slwi r2, r2, 4
+        add r2, r3, r2
+        lwz r3, 4(r2)
+        blr
+