Created
September 22, 2010 14:23
-
-
Save christianparpart/591757 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
define i8* @_strcasestr(i8* %haystack, i8* nocapture %needle) nounwind readonly { | |
; <label>:0 | |
%1 = tail call i64 @strlen(i8* %haystack) ; <i64> [#uses=1] | |
%2 = trunc i64 %1 to i32 ; <i32> [#uses=1] | |
%3 = tail call i64 @strlen(i8* %needle) ; <i64> [#uses=1] | |
%4 = trunc i64 %3 to i32 ; <i32> [#uses=2] | |
%5 = icmp slt i32 %2, %4 ; <i1> [#uses=1] | |
br i1 %5, label %.loopexit, label %.preheader | |
.preheader: ; preds = %0 | |
%6 = sext i32 %4 to i64 ; <i64> [#uses=1] | |
br label %7 | |
; <label>:7 ; preds = %.preheader, %16 | |
%indvar = phi i64 [ 0, %.preheader ], [ %indvar.next, %16 ] ; <i64> [#uses=2] | |
%.01 = getelementptr i8* %haystack, i64 %indvar ; <i8*> [#uses=3] | |
%8 = load i8* %.01 ; <i8> [#uses=2] | |
%9 = icmp eq i8 %8, 0 ; <i1> [#uses=1] | |
br i1 %9, label %.loopexit, label %10 | |
; <label>:10 ; preds = %7 | |
%11 = load i8* %needle ; <i8> [#uses=1] | |
%12 = icmp eq i8 %8, %11 ; <i1> [#uses=1] | |
br i1 %12, label %13, label %16 | |
; <label>:13 ; preds = %10 | |
%14 = tail call i32 @strncasecmp(i8* %.01, i8* %needle, i64 %6) nounwind readonly ; <i32> [#uses=1] | |
%15 = icmp eq i32 %14, 0 ; <i1> [#uses=1] | |
br i1 %15, label %.loopexit, label %16 | |
; <label>:16 ; preds = %13, %10 | |
%indvar.next = add i64 %indvar, 1 ; <i64> [#uses=1] | |
br label %7 | |
.loopexit: ; preds = %7, %13, %0 | |
%.0 = phi i8* [ null, %0 ], [ null, %7 ], [ %.01, %13 ] ; <i8*> [#uses=1] | |
ret i8* %.0 | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment