[llvm-commits] [llvm] r124082 - /llvm/trunk/lib/Target/README.txt

[Anders Carlsson]

Author: andersca
Date: Sun Jan 23 14:31:00 2011
New Revision: 124082

URL: http://llvm.org/viewvc/llvm-project?rev=124082&view=rev
Log:
Add a memset loop that LoopIdiomRecognize doesn't recognize.

Modified:
    llvm/trunk/lib/Target/README.txt

Modified: llvm/trunk/lib/Target/README.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/README.txt?rev=124082&r1=124081&r2=124082&view=diff
==============================================================================
--- llvm/trunk/lib/Target/README.txt (original)
+++ llvm/trunk/lib/Target/README.txt Sun Jan 23 14:31:00 2011
@@ -289,6 +289,14 @@
 
 This sort of thing should be added to the loop idiom pass.
 
+This loop isn't converted to a memset:
+
+void f(char *dest, int n) {
+  for (int i = 0; i < n; ++i) {
+    dest[n] = 0;
+  }
+}
+
 //===---------------------------------------------------------------------===//
 
 These should turn into single 16-bit (unaligned?) loads on little/big endian