From: Chris Lattner <sabre@nondot.org>
Date: Sun, 22 May 2011 18:28:46 +0000 (+0000)
Subject: add a note.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=87943e36989bd7ac03647004272fe054191e19e7;p=oota-llvm.git

add a note.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131863 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 0105ae4562a..260cb5ccab3 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -2346,3 +2346,13 @@ Note that bb1 and bb2 are the same.  This doesn't happen at the IR level
 because one call is passing an i32 and the other is passing an i64.
 
 //===---------------------------------------------------------------------===//
+
+I see this sort of pattern in 176.gcc in a few places (e.g. the start of
+store_bit_field).  The rem should be replaced with a multiply and subtract:
+
+  %3 = sdiv i32 %A, %B
+  %4 = srem i32 %A, %B
+
+Similarly for udiv/urem.
+
+//===---------------------------------------------------------------------===//