1*9880d681SAndroid Build Coastguard Worker; Test that the strstr library call simplifier works correctly. 2*9880d681SAndroid Build Coastguard Worker; 3*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -instcombine -S | FileCheck %s 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Workertarget 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-n8:16:32:64-S128" 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Worker@null = private constant [1 x i8] zeroinitializer 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdeclare i8 @strstr(i8*, i8*) 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdefine i8 @test_no_simplify1(i8* %str) { 12*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test_no_simplify1( 13*9880d681SAndroid Build Coastguard Worker %pat = getelementptr inbounds [1 x i8], [1 x i8]* @null, i32 0, i32 0 14*9880d681SAndroid Build Coastguard Worker %ret = call i8 @strstr(i8* %str, i8* %pat) 15*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: call i8 @strstr 16*9880d681SAndroid Build Coastguard Worker ret i8 %ret 17*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ret i8 %ret 18*9880d681SAndroid Build Coastguard Worker} 19