1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -simplifycfg -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: switch 4*9880d681SAndroid Build Coastguard Worker %llvm.dbg.anchor.type = type { i32, i32 } 5*9880d681SAndroid Build Coastguard Worker %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* } 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Worker@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata" 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Worker@.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1] 10*9880d681SAndroid Build Coastguard Worker@.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata" ; <[6 x i8]*> [#uses=1] 11*9880d681SAndroid Build Coastguard Worker@.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata" ; <[55 x i8]*> [#uses=1] 12*9880d681SAndroid Build Coastguard Worker@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8], [6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8], [55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1] 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Worker; Test folding all to same dest 17*9880d681SAndroid Build Coastguard Workerdefine i32 @test3(i1 %C) { 18*9880d681SAndroid Build Coastguard Worker br i1 %C, label %Start, label %TheDest 19*9880d681SAndroid Build Coastguard WorkerStart: ; preds = %0 20*9880d681SAndroid Build Coastguard Workercall void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) 21*9880d681SAndroid Build Coastguard Worker switch i32 3, label %TheDest [ 22*9880d681SAndroid Build Coastguard Worker i32 0, label %TheDest 23*9880d681SAndroid Build Coastguard Worker i32 1, label %TheDest 24*9880d681SAndroid Build Coastguard Worker i32 2, label %TheDest 25*9880d681SAndroid Build Coastguard Worker i32 5, label %TheDest 26*9880d681SAndroid Build Coastguard Worker ] 27*9880d681SAndroid Build Coastguard WorkerTheDest: ; preds = %Start, %Start, %Start, %Start, %Start, %0 28*9880d681SAndroid Build Coastguard Worker ret i32 1234 29*9880d681SAndroid Build Coastguard Worker} 30*9880d681SAndroid Build Coastguard Worker 31*9880d681SAndroid Build Coastguard Worker; Test folding switch -> branch 32*9880d681SAndroid Build Coastguard Workerdefine i32 @test4(i32 %C) { 33*9880d681SAndroid Build Coastguard Worker switch i32 %C, label %L1 [ 34*9880d681SAndroid Build Coastguard Worker i32 0, label %L2 35*9880d681SAndroid Build Coastguard Worker ] 36*9880d681SAndroid Build Coastguard WorkerL1: ; preds = %0 37*9880d681SAndroid Build Coastguard Workercall void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) 38*9880d681SAndroid Build Coastguard Worker ret i32 0 39*9880d681SAndroid Build Coastguard WorkerL2: ; preds = %0 40*9880d681SAndroid Build Coastguard Workercall void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) 41*9880d681SAndroid Build Coastguard Worker ret i32 1 42*9880d681SAndroid Build Coastguard Worker} 43*9880d681SAndroid Build Coastguard Worker 44*9880d681SAndroid Build Coastguard Worker; Can fold into a cond branch! 45*9880d681SAndroid Build Coastguard Workerdefine i32 @test5(i32 %C) { 46*9880d681SAndroid Build Coastguard Worker switch i32 %C, label %L1 [ 47*9880d681SAndroid Build Coastguard Worker i32 0, label %L2 48*9880d681SAndroid Build Coastguard Worker i32 123, label %L1 49*9880d681SAndroid Build Coastguard Worker ] 50*9880d681SAndroid Build Coastguard WorkerL1: ; preds = %0, %0 51*9880d681SAndroid Build Coastguard Workercall void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) 52*9880d681SAndroid Build Coastguard Worker ret i32 0 53*9880d681SAndroid Build Coastguard WorkerL2: ; preds = %0 54*9880d681SAndroid Build Coastguard Workercall void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) 55*9880d681SAndroid Build Coastguard Worker ret i32 1 56*9880d681SAndroid Build Coastguard Worker} 57*9880d681SAndroid Build Coastguard Worker 58