1 ; RUN: llc < %s -march=x86-64 | FileCheck %s 2 3 target 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" 4 target 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 9 define fastcc i32 @longest_match(i32 %cur_match) nounwind { 10 ; CHECK: longest_match: 11 ; CHECK-NOT: ret 12 ; CHECK: cmpb $0, (%r{{.*}},%r{{.*}}) 13 ; CHECK: ret 14 15 entry: 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 25 bb5: ; preds = %entry 26 ret i32 %0 27 28 bb23: ; preds = %entry 29 ret i32 %0 30 } 31
