From 0f471e018f0069cb5372279d57853704da8d6b2b Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Wed, 16 Jun 2010 15:47:00 +0000
Subject: [PATCH] TODO--
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106102 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/Target/README.txt | 27 ---------------------------
1 file changed, 27 deletions(-)
diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index f4f767aa4d5..efb91a1b283 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1439,33 +1439,6 @@ This pattern repeats several times, basically doing:
//===---------------------------------------------------------------------===//
-186.crafty contains this interesting pattern:
-
-%77 = call i8* @strstr(i8* getelementptr ([6 x i8]* @"\01LC5", i32 0, i32 0),
- i8* %30)
-%phitmp648 = icmp eq i8* %77, getelementptr ([6 x i8]* @"\01LC5", i32 0, i32 0)
-br i1 %phitmp648, label %bb70, label %bb76
-
-bb70: ; preds = %OptionMatch.exit91, %bb69
- %78 = call i32 @strlen(i8* %30) nounwind readonly align 1 ; <i32> [#uses=1]
-
-This is basically:
- cststr = "abcdef";
- if (strstr(cststr, P) == cststr) {
- x = strlen(P);
- ...
-
-The strstr call would be significantly cheaper written as:
-
-cststr = "abcdef";
-if (memcmp(P, str, strlen(P)))
- x = strlen(P);
-
-This is memcmp+strlen instead of strstr. This also makes the strlen fully
-redundant.
-
-//===---------------------------------------------------------------------===//
-
186.crafty also contains this code:
%1906 = call i32 @strlen(i8* getelementptr ([32 x i8]* @pgn_event, i32 0,i32 0))