1*9880d681SAndroid Build Coastguard Worker; RUN: opt -codegenprepare -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*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" 4*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-apple-darwin10.0.0" 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1( 7*9880d681SAndroid Build Coastguard Worker; objectsize should fold to a constant, which causes the branch to fold to an 8*9880d681SAndroid Build Coastguard Worker; uncond branch. Next, we fold the control flow alltogether. 9*9880d681SAndroid Build Coastguard Worker; rdar://8785296 10*9880d681SAndroid Build Coastguard Workerdefine i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 { 11*9880d681SAndroid Build Coastguard Workerentry: 12*9880d681SAndroid Build Coastguard Worker %0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false) 13*9880d681SAndroid Build Coastguard Worker %1 = icmp ugt i64 %0, 3 14*9880d681SAndroid Build Coastguard Worker br i1 %1, label %T, label %trap 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Worker; CHECK: T: 17*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: br label % 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workertrap: ; preds = %0, %entry 20*9880d681SAndroid Build Coastguard Worker tail call void @llvm.trap() noreturn nounwind 21*9880d681SAndroid Build Coastguard Worker unreachable 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard WorkerT: 24*9880d681SAndroid Build Coastguard Worker; CHECK: ret i32 4 25*9880d681SAndroid Build Coastguard Worker ret i32 4 26*9880d681SAndroid Build Coastguard Worker} 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Workerdeclare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly 29*9880d681SAndroid Build Coastguard Worker 30*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.trap() nounwind 31