1; RUN: llc < %s -march=x86-64 | FileCheck %s
2
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
4target triple = "x86_64-apple-darwin9.6"
5@prev_length = internal global i32 0		; <i32*> [#uses=1]
6@window = internal global [65536 x i8] zeroinitializer, align 32		; <[65536 x i8]*> [#uses=1]
7@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (i32)* @longest_match to i8*)]		; <[1 x i8*]*> [#uses=0]
8
9define fastcc i32 @longest_match(i32 %cur_match) nounwind {
10; CHECK-LABEL: longest_match:
11; CHECK-NOT: ret
12; CHECK: cmpb $0, (%r{{.*}},%r{{.*}})
13; CHECK: ret
14
15entry:
16	%0 = load i32* @prev_length, align 4		; <i32> [#uses=3]
17	%1 = zext i32 %cur_match to i64		; <i64> [#uses=1]
18	%2 = sext i32 %0 to i64		; <i64> [#uses=1]
19	%.sum3 = add i64 %1, %2		; <i64> [#uses=1]
20	%3 = getelementptr [65536 x i8]* @window, i64 0, i64 %.sum3		; <i8*> [#uses=1]
21	%4 = load i8* %3, align 1		; <i8> [#uses=1]
22	%5 = icmp eq i8 %4, 0		; <i1> [#uses=1]
23	br i1 %5, label %bb5, label %bb23
24
25bb5:		; preds = %entry
26	ret i32 %0
27
28bb23:		; preds = %entry
29	ret i32 %0
30}
31