Fix PR4313: IPSCCP was not setting the lattice value for the invoke instruction

when the invoke had multiple return values: it set the lattice value only on the
extractvalue.
This caused the invoke's lattice value to remain the default (undefined), and
later propagated to extractvalue's operand, which incorrectly introduces
undefined behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84637 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 720 insertions, 2 deletions

diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index b5edf4e058..b745097872 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -1229,7 +1229,10 @@ CallOverdefined:
     TMRVI = TrackedMultipleRetVals.find(std::make_pair(F, 0));
     if (TMRVI == TrackedMultipleRetVals.end())
       goto CallOverdefined;
-    
+
+    // Need to mark as overdefined, otherwise it stays undefined which
+    // creates extractvalue undef, <idx>
+    markOverdefined(I);
     // If we are tracking this callee, propagate the return values of the call
     // into this call site.  We do this by walking all the uses. Single-index
     // ExtractValueInst uses can be tracked; anything more complicated is
@@ -1271,7 +1274,6 @@ CallOverdefined:
   }
 }
 
-
 void SCCPSolver::Solve() {
   // Process the work lists until they are empty!
   while (!BBWorkList.empty() || !InstWorkList.empty() ||
diff --git a/test/Transforms/SCCP/2009-06-03-sccp-structret-undef.ll b/test/Transforms/SCCP/2009-06-03-sccp-structret-undef.ll
new file mode 100644
index 0000000000..4a75f463ed
--- /dev/null
+++ b/test/Transforms/SCCP/2009-06-03-sccp-structret-undef.ll
@@ -0,0 +1,716 @@
+; RUN: opt -ipsccp <%s -S | FileCheck %s
+; PR4313
+; the return value of a multiple-return value invoke must not be left undefined
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+%0 = type <{ %1, %2, [4 x i8], %3 }>
+%1 = type { i32 (...)**, i32, i32, i32, i32, %1*, i8*, i8*, i8* }
+%2 = type { i32 }
+%3 = type <{ %4, %5 }>
+%4 = type { i32 (...)**, i8 }
+%5 = type <{ [33 x i8], [191 x i8] }>
+%6 = type { %1, %7, %10 }
+%7 = type { %8 }
+%8 = type { %9 }
+%9 = type { i8* }
+%10 = type { %11 }
+%11 = type { %12 }
+%12 = type { i32 (...)** }
+%13 = type { %1, %14, %18, %10 }
+%14 = type { %15 }
+%15 = type { %16 }
+%16 = type { %17 }
+%17 = type { %8*, %8*, %8* }
+%18 = type { %19 }
+%19 = type { %20 }
+%20 = type { i32*, i32*, i32* }
+%21 = type { %22, %22 }
+%22 = type { %23 }
+%23 = type { %24 }
+%24 = type { %25, %26, i64 }
+%25 = type <{ i8 }>
+%26 = type { i32, %26*, %26*, %26* }
+%27 = type { %28, %15, i8* }
+%28 = type { %29 }
+%29 = type { %30 }
+%30 = type { %31*, %31*, %31* }
+%31 = type { %32*, %9 }
+%32 = type { i32 (...)**, i8*, i8*, i8 }
+%33 = type { i64, [12 x i32] }
+%34 = type { %35 }
+%35 = type { i32, i32, i32, i32, i32, i32, %36 }
+%36 = type { %36*, %36* }
+%37 = type { i32, %8, %9, %15, %38, %42 }
+%38 = type { %39 }
+%39 = type { %40 }
+%40 = type { %41*, %41*, %41* }
+%41 = type { %8, %12*, i32, %12* }
+%42 = type { %43 }
+%43 = type { %44 }
+%44 = type { %37**, %37**, %37** }
+%45 = type { i32 (...)**, i8*, i8*, i8*, i32, i8 }
+%46 = type { %47, %37*, %12*, %8, %15, %37*, %50 }
+%47 = type { %48 }
+%48 = type { %49 }
+%49 = type { i8*, i8*, i8* }
+%50 = type { %51 }
+%51 = type { %52 }
+%52 = type { %46**, %46**, %46** }
+%53 = type { %21*, %54, %63, %63, %22, %22, %22, %22, %22, %22, %37*, %37*, %37*, %72 }
+%54 = type { %37*, %22, %55, %59, %18 }
+%55 = type { %56 }
+%56 = type { %57 }
+%57 = type { %58*, %58*, %58* }
+%58 = type { %37*, i32, i32 }
+%59 = type { %60 }
+%60 = type { %61 }
+%61 = type { %62*, %62*, %62* }
+%62 = type { %37*, %8, %42, %18, i32, i32, i32, %42, %8, %8 }
+%63 = type { %64 }
+%64 = type { %65 }
+%65 = type { %66*, %66*, %66* }
+%66 = type { %37*, %8, %8, %8, %8, %67, i32, i8, i8, %68 }
+%67 = type { %18, %42, %18, %42 }
+%68 = type { %69 }
+%69 = type { %70 }
+%70 = type { %71*, %71*, %71* }
+%71 = type { i32, i32 }
+%72 = type { %73 }
+%73 = type { %74 }
+%74 = type { %75*, %75*, %75* }
+%75 = type { %76*, %46*, %46*, %42, i32 }
+%76 = type { %77, %78 }
+%77 = type { %12, %12* }
+%78 = type { %79 }
+%79 = type { %80 }
+%80 = type { %12**, %12**, %12** }
+%81 = type { %12, %21*, %53 }
+%82 = type { %22, %8 }
+%83 = type { %26, %84 }
+%84 = type { i32, %22 }
+%s2i64 = type { i64, i64 }
+%85 = type { %26* }
+%86 = type { %27*, i8*, %32*, i8*, i32, %8, i64, i32 }
+%87 = type { %86, %88, %22, %95* }
+%88 = type { %89 }
+%89 = type { %90 }
+%90 = type { %91*, %91*, %91* }
+%91 = type { %92 }
+%92 = type { %93 }
+%93 = type { %94*, %94*, %94* }
+%94 = type { %8, %18, %12*, %9 }
+%95 = type { %37, %42 }
+
+@_ZNSs4_Rep20_S_empty_rep_storageE = external global [4 x i64] ; <[4 x i64]*> [#uses=1]
+@.str111723 = external constant [1 x i8], align 1 ; <[1 x i8]*> [#uses=1]
+@.str181730 = external constant [4 x i8], align 1 ; <[4 x i8]*> [#uses=1]
+@.str721784 = external constant [37 x i8], align 8 ; <[37 x i8]*> [#uses=1]
+@_ZN12_GLOBAL__N_16ActionE = external global %0, align 32 ; <%0*> [#uses=1]
+@_ZN12_GLOBAL__N_114OutputFilenameE = external global %6, align 32 ; <%6*> [#uses=1]
+@_ZN12_GLOBAL__N_111IncludeDirsE = external global %13, align 32 ; <%13*> [#uses=1]
+@.str533653 = external constant [2 x i8], align 1 ; <[2 x i8]*> [#uses=1]
+@_ZN4llvm7RecordsE = external global %21, align 32 ; <%21*> [#uses=2]
+@_ZL6SrcMgr = external global %27, align 32       ; <%27*> [#uses=2]
+@.str3723 = external constant [88 x i8], align 8  ; <[88 x i8]*> [#uses=1]
+@.str13724 = external constant [136 x i8], align 8 ; <[136 x i8]*> [#uses=1]
+
+@_ZL20__gthrw_pthread_oncePiPFvvE = alias weak i32 (i32*, void ()*)* @pthread_once ; <i32 (i32*, void ()*)*> [#uses=0]
+@_ZL27__gthrw_pthread_getspecificj = alias weak i8* (i32)* @pthread_getspecific ; <i8* (i32)*> [#uses=0]
+@_ZL27__gthrw_pthread_setspecificjPKv = alias weak i32 (i32, i8*)* @pthread_setspecific ; <i32 (i32, i8*)*> [#uses=0]
+@_ZL22__gthrw_pthread_createPmPK14pthread_attr_tPFPvS3_ES3_ = alias weak i32 (i64*, %33*, i8* (i8*)*, i8*)* @pthread_create ; <i32 (i64*, %33*, i8* (i8*)*, i8*)*> [#uses=0]
+@_ZL22__gthrw_pthread_cancelm = alias weak i32 (i64)* @pthread_cancel ; <i32 (i64)*> [#uses=0]
+@_ZL26__gthrw_pthread_mutex_lockP15pthread_mutex_t = alias weak i32 (%34*)* @pthread_mutex_lock ; <i32 (%34*)*> [#uses=0]
+@_ZL29__gthrw_pthread_mutex_trylockP15pthread_mutex_t = alias weak i32 (%34*)* @pthread_mutex_trylock ; <i32 (%34*)*> [#uses=0]
+@_ZL28__gthrw_pthread_mutex_unlockP15pthread_mutex_t = alias weak i32 (%34*)* @pthread_mutex_unlock ; <i32 (%34*)*> [#uses=0]
+@_ZL26__gthrw_pthread_mutex_initP15pthread_mutex_tPK19pthread_mutexattr_t = alias weak i32 (%34*, %2*)* @pthread_mutex_init ; <i32 (%34*, %2*)*> [#uses=0]
+@_ZL26__gthrw_pthread_key_createPjPFvPvE = alias weak i32 (i32*, void (i8*)*)* @pthread_key_create ; <i32 (i32*, void (i8*)*)*> [#uses=0]
+@_ZL26__gthrw_pthread_key_deletej = alias weak i32 (i32)* @pthread_key_delete ; <i32 (i32)*> [#uses=0]
+@_ZL30__gthrw_pthread_mutexattr_initP19pthread_mutexattr_t = alias weak i32 (%2*)* @pthread_mutexattr_init ; <i32 (%2*)*> [#uses=0]
+@_ZL33__gthrw_pthread_mutexattr_settypeP19pthread_mutexattr_ti = alias weak i32 (%2*, i32)* @pthread_mutexattr_settype ; <i32 (%2*, i32)*> [#uses=0]
+@_ZL33__gthrw_pthread_mutexattr_destroyP19pthread_mutexattr_t = alias weak i32 (%2*)* @pthread_mutexattr_destroy ; <i32 (%2*)*> [#uses=0]
+
+declare void @_ZNSsC1EPKcRKSaIcE(%8*, i8*, %25*)
+
+declare i8* @_Znwm(i64)
+
+declare zeroext i8 @_ZNK4llvm6Record12isSubClassOfENS_9StringRefE(%37*, i64, i64) align 2
+
+declare i32 @_ZNKSs7compareEPKc(%8*, i8*)
+
+declare %45* @_ZN4llvm11raw_ostreamlsEPKc(%45*, i8*) align 2
+
+declare void @_ZNSsC1ERKSs(%8*, %8*)
+
+declare %26* @_ZSt18_Rb_tree_incrementPSt18_Rb_tree_node_base(%26*)
+
+declare void @_ZStplIcSt11char_traitsIcESaIcEESbIT_T0_T1_EPKS3_RKS6_(%8* noalias sret, i8*, %8*)
+
+declare %15* @_ZNSt6vectorISsSaISsEEaSERKS1_(%15*, %15*) align 2
+
+declare void @_ZNSt6vectorISsSaISsEE9push_backERKSs(%15*, %8*) align 2
+
+declare i32 @_ZNK4llvm15TreePatternNode10getTypeNumEj(%46*, i32) align 2
+
+declare void @_ZN4llvm18CodeGenDAGPatternsD1Ev(%53*) align 2
+
+declare void @_ZN4llvm18CodeGenDAGPatternsC1ERNS_12RecordKeeperE(%53*, %21*) align 2
+
+declare void @_ZNK4llvm14PatternToMatch17getPredicateCheckEv(%8* noalias sret, %75*) align 2
+
+define internal void @0(%81*, %45*) align 2 {
+  invoke void @_ZNSsC1ERKSs(%8* undef, %8* null)
+          to label %3 unwind label %28
+
+; <label>:3                                       ; preds = %2
+  %4 = getelementptr inbounds i8* null, i64 -24   ; <i8*> [#uses=1]
+  %5 = icmp eq i8* %4, bitcast ([4 x i64]* @_ZNSs4_Rep20_S_empty_rep_storageE to i8*) ; <i1> [#uses=1]
+  br i1 %5, label %7, label %6
+
+; <label>:6                                       ; preds = %3
+  unreachable
+
+; <label>:7                                       ; preds = %3
+  br i1 undef, label %9, label %8
+
+; <label>:8                                       ; preds = %7
+  invoke void @_ZStplIcSt11char_traitsIcESaIcEESbIT_T0_T1_EPKS3_RKS6_(%8* noalias sret null, i8* getelementptr inbounds ([37 x i8]* @.str721784, i64 0, i64 0), %8* undef)
+          to label %10 unwind label %29
+
+; <label>:9                                       ; preds = %7
+  unreachable
+
+; <label>:10                                      ; preds = %8
+  invoke void @_ZNSsC1ERKSs(%8* null, %8* null)
+          to label %11 unwind label %30
+
+; <label>:11                                      ; preds = %10
+  %12 = invoke %45* @_ZN4llvm11raw_ostreamlsEPKc(%45* %1, i8* getelementptr inbounds ([88 x i8]* @.str3723, i64 0, i64 0))
+          to label %13 unwind label %31           ; <%45*> [#uses=1]
+
+; <label>:13                                      ; preds = %11
+  %14 = invoke %45* @_ZN4llvm11raw_ostreamlsEPKc(%45* %12, i8* getelementptr inbounds ([136 x i8]* @.str13724, i64 0, i64 0))
+          to label %15 unwind label %31           ; <%45*> [#uses=0]
+
+; <label>:15                                      ; preds = %13
+  %16 = getelementptr inbounds i8* null, i64 -24  ; <i8*> [#uses=1]
+  %17 = icmp eq i8* %16, bitcast ([4 x i64]* @_ZNSs4_Rep20_S_empty_rep_storageE to i8*) ; <i1> [#uses=1]
+  br i1 %17, label %19, label %18
+
+; <label>:18                                      ; preds = %15
+  unreachable
+
+; <label>:19                                      ; preds = %15
+  %20 = getelementptr inbounds i8* null, i64 -24  ; <i8*> [#uses=1]
+  %21 = icmp eq i8* %20, bitcast ([4 x i64]* @_ZNSs4_Rep20_S_empty_rep_storageE to i8*) ; <i1> [#uses=1]
+  br i1 %21, label %23, label %22
+
+; <label>:22                                      ; preds = %19
+  unreachable
+
+; <label>:23                                      ; preds = %19
+  invoke void @_ZNSsC1ERKSs(%8* undef, %8* undef)
+          to label %24 unwind label %29
+
+; <label>:24                                      ; preds = %23
+  invoke void @_ZNSsC1ERKSs(%8* undef, %8* undef)
+          to label %26 unwind label %25
+
+; <label>:25                                      ; preds = %24
+  unreachable
+
+; <label>:26                                      ; preds = %24
+  invoke void @f4(%82* undef, %53* undef)
+          to label %27 unwind label %32
+
+; <label>:27                                      ; preds = %26
+  unreachable
+
+; <label>:28                                      ; preds = %2
+  unreachable
+
+; <label>:29                                      ; preds = %23, %8
+  unreachable
+
+; <label>:30                                      ; preds = %10
+  unreachable
+
+; <label>:31                                      ; preds = %13, %11
+  unreachable
+
+; <label>:32                                      ; preds = %26
+  unreachable
+}
+
+declare void @_ZNSt3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS1_EEED1Ev(%22*) align 2
+
+declare void @_ZNSt3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS1_EEEC1ERKS8_(%22*, %22*) align 2
+
+declare %83* @_ZNSt8_Rb_treeIN4llvm3MVT15SimpleValueTypeESt4pairIKS2_St3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaIS3_IKSsS7_EEEESt10_Select1stISE_ES8_IS2_ESaISE_EE14_M_create_nodeERKSE_(%23*, %84*) align 2
+
+declare %22* @_ZNSt3mapIN12_GLOBAL__N_117OperandsSignatureES_ISsS_IN4llvm3MVT15SimpleValueTypeES_IS4_S_ISsNS0_15InstructionMemoESt4lessISsESaISt4pairIKSsS5_EEES6_IS4_ESaIS8_IKS4_SC_EEESD_SaIS8_ISE_SH_EEES7_SaIS8_IS9_SK_EEES6_IS1_ESaIS8_IKS1_SN_EEEixERSP_(%22*, %14*) align 2
+
+define internal %22* @1(%22*, i32*) align 2 {
+  unreachable
+}
+
+declare void @test(i64);
+
+define internal %22* @f3(%22*, i32*) align 2 {
+  %3 = alloca %85, align 8                        ; <%85*> [#uses=1]
+  %4 = alloca %84, align 8                        ; <%84*> [#uses=5]
+  invoke void @_ZNSt3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS1_EEEC1ERKS8_(%22* undef, %22* undef)
+          to label %5 unwind label %30
+
+; <label>:5                                       ; preds = %2
+  %6 = getelementptr inbounds %26* null, i64 1, i32 0 ; <i32*> [#uses=1]
+  %7 = load i32* %6, align 4                      ; <i32> [#uses=0]
+  br i1 false, label %8, label %11
+
+; <label>:8                                       ; preds = %5
+  %9 = invoke %83* @_ZNSt8_Rb_treeIN4llvm3MVT15SimpleValueTypeESt4pairIKS2_St3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaIS3_IKSsS7_EEEESt10_Select1stISE_ES8_IS2_ESaISE_EE14_M_create_nodeERKSE_(%23* undef, %84* %4)
+          to label %10 unwind label %31           ; <%83*> [#uses=0]
+
+; <label>:10                                      ; preds = %8
+  unreachable
+
+; <label>:11                                      ; preds = %5
+  %12 = getelementptr inbounds %85* %3, i64 0, i32 0 ; <%26**> [#uses=1]
+  %13 = load %26** %12, align 8                   ; <%26*> [#uses=0]
+  br i1 false, label %14, label %17
+
+; <label>:14                                      ; preds = %11
+  %15 = invoke %83* @_ZNSt8_Rb_treeIN4llvm3MVT15SimpleValueTypeESt4pairIKS2_St3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaIS3_IKSsS7_EEEESt10_Select1stISE_ES8_IS2_ESaISE_EE14_M_create_nodeERKSE_(%23* undef, %84* %4)
+          to label %16 unwind label %31           ; <%83*> [#uses=0]
+
+; <label>:16                                      ; preds = %14
+  unreachable
+
+; <label>:17                                      ; preds = %11
+  %18 = invoke %26* @_ZSt18_Rb_tree_incrementPSt18_Rb_tree_node_base(%26* undef)
+          to label %19 unwind label %31           ; <%26*> [#uses=0]
+
+; <label>:19                                      ; preds = %17
+  %20 = getelementptr inbounds %84* %4, i64 0, i32 0 ; <i32*> [#uses=1]
+  %21 = load i32* %20, align 8                    ; <i32> [#uses=0]
+  br i1 false, label %22, label %25
+
+; <label>:22                                      ; preds = %19
+  %23 = invoke %83* @_ZNSt8_Rb_treeIN4llvm3MVT15SimpleValueTypeESt4pairIKS2_St3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaIS3_IKSsS7_EEEESt10_Select1stISE_ES8_IS2_ESaISE_EE14_M_create_nodeERKSE_(%23* undef, %84* %4)
+          to label %24 unwind label %31           ; <%83*> [#uses=0]
+
+; <label>:24                                      ; preds = %22
+  unreachable
+
+; <label>:25                                      ; preds = %19
+  %26 = invoke %s2i64 @f_3(%23* undef, %84* %4)
+          to label %l1 unwind label %31
+
+; <label>:27                                      ; preds = %25
+  %eval = extractvalue %s2i64 %inv, 0                   ; <i64> [#uses=0]
+  call void @test(i64 %eval)
+; CHECK: = invoke %s2i64 @f_3
+; CHECK: %eval = extractvalue %s2i64 %inv, 0
+; CHECK-NEXT: call void @test(i64 %eval)
+  invoke void @_ZNSt3mapISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS1_EEED1Ev(%22* undef)
+          to label %29 unwind label %30
+
+l1:
+  %28 = extractvalue %s2i64 %26, 0
+  call void @test(i64 %28)
+;CHECK: call void @test(i64 5)
+;CHECK-NEXT: %inv = invoke %s2i64 @f2
+  %inv = invoke %s2i64 @f2(%23* undef, %84* %4)
+          to label %27 unwind label %31           ; <%s2i64> [#uses=1]
+
+
+; <label>:29                                      ; preds = %27
+  unreachable
+
+; <label>:30                                      ; preds = %27, %2
+  unreachable
+
+; <label>:31                                      ; preds = %25, %22, %17, %14, %8
+  unreachable
+}
+define internal %s2i64 @f2(%23*, %84*) align 2 {
+  br i1 undef, label %3, label %4
+
+; <label>:3                                       ; preds = %2
+  br label %4
+
+; <label>:4                                       ; preds = %3, %2
+  %5 = insertvalue %s2i64 undef, i64 4, 1        ; <%s2i64> [#uses=1]
+  %6 = ptrtoint %84* %1 to i64
+  %7 = insertvalue %s2i64 %5, i64 %6, 0        ; <%s2i64> [#uses=1]
+  ret %s2i64 %7
+}
+define internal %s2i64 @f_3(%23*, %84*) align 2 {
+  br i1 undef, label %3, label %4
+
+; <label>:3                                       ; preds = %2
+  br label %4
+
+; <label>:4                                       ; preds = %3, %2
+  %5 = insertvalue %s2i64 undef, i64 4, 1        ; <%s2i64> [#uses=1]
+  %6 = insertvalue %s2i64 %5, i64 5, 0        ; <%s2i64> [#uses=1]
+  ret %s2i64 %6
+}
+
+
+declare %22* @_ZNSt3mapISsS_IN4llvm3MVT15SimpleValueTypeES_IS2_S_ISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS4_EEES5_IS2_ESaIS7_IKS2_SB_EEESC_SaIS7_ISD_SG_EEES6_SaIS7_IS8_SJ_EEEixERS8_(%22*, %8*) align 2
+
+define internal void @f4(%82*, %53*) align 2 {
+  invoke void @_ZNSsC1ERKSs(%8* undef, %8* undef)
+          to label %3 unwind label %57
+
+; <label>:3                                       ; preds = %2
+  br i1 undef, label %6, label %4
+
+; <label>:4                                       ; preds = %3
+  br i1 undef, label %5, label %6
+
+; <label>:5                                       ; preds = %4
+  br label %6
+
+; <label>:6                                       ; preds = %5, %4, %3
+  br i1 undef, label %8, label %7
+
+; <label>:7                                       ; preds = %6
+  br i1 undef, label %56, label %9
+
+; <label>:8                                       ; preds = %6
+  unreachable
+
+; <label>:9                                       ; preds = %7
+  %10 = icmp eq %12* null, null                   ; <i1> [#uses=1]
+  br i1 %10, label %12, label %11
+
+; <label>:11                                      ; preds = %9
+  unreachable
+
+; <label>:12                                      ; preds = %9
+  %13 = getelementptr inbounds %46* null, i64 0, i32 6, i32 0, i32 0, i32 0 ; <%46***> [#uses=0]
+  %14 = icmp eq i32 0, 0                          ; <i1> [#uses=1]
+  br i1 %14, label %16, label %15
+
+; <label>:15                                      ; preds = %12
+  unreachable
+
+; <label>:16                                      ; preds = %12
+  br i1 undef, label %19, label %17
+
+; <label>:17                                      ; preds = %16
+  %18 = icmp eq %12* null, null                   ; <i1> [#uses=1]
+  br i1 %18, label %21, label %20
+
+; <label>:19                                      ; preds = %16
+  unreachable
+
+; <label>:20                                      ; preds = %17
+  unreachable
+
+; <label>:21                                      ; preds = %17
+  %22 = invoke i32 @_ZNK4llvm15TreePatternNode10getTypeNumEj(%46* null, i32 0)
+          to label %23 unwind label %58           ; <i32> [#uses=0]
+
+; <label>:23                                      ; preds = %21
+  %24 = invoke zeroext i8 @_ZNK4llvm6Record12isSubClassOfENS_9StringRefE(%37* undef, i64 undef, i64 undef)
+          to label %25 unwind label %58           ; <i8> [#uses=0]
+
+; <label>:25                                      ; preds = %23
+  br i1 undef, label %26, label %27
+
+; <label>:26                                      ; preds = %25
+  unreachable
+
+; <label>:27                                      ; preds = %25
+  %28 = invoke i8* @_Znwm(i64 24)
+          to label %29 unwind label %59           ; <i8*> [#uses=0]
+
+; <label>:29                                      ; preds = %27
+  %30 = icmp eq %12* null, null                   ; <i1> [#uses=1]
+  br i1 %30, label %32, label %31
+
+; <label>:31                                      ; preds = %29
+  unreachable
+
+; <label>:32                                      ; preds = %29
+  %33 = invoke i32 @_ZNKSs7compareEPKc(%8* undef, i8* getelementptr inbounds ([4 x i8]* @.str181730, i64 0, i64 0))
+          to label %34 unwind label %59           ; <i32> [#uses=1]
+
+; <label>:34                                      ; preds = %32
+  %35 = icmp eq i32 %33, 0                        ; <i1> [#uses=1]
+  br i1 %35, label %37, label %36
+
+; <label>:36                                      ; preds = %34
+  unreachable
+
+; <label>:37                                      ; preds = %34
+  invoke void @_ZNSsC1EPKcRKSaIcE(%8* undef, i8* getelementptr inbounds ([1 x i8]* @.str111723, i64 0, i64 0), %25* undef)
+          to label %38 unwind label %60
+
+; <label>:38                                      ; preds = %37
+  invoke void @_ZNSt6vectorISsSaISsEE9push_backERKSs(%15* undef, %8* undef)
+          to label %39 unwind label %61
+
+; <label>:39                                      ; preds = %38
+  br i1 undef, label %42, label %40
+
+; <label>:40                                      ; preds = %39
+  br i1 undef, label %41, label %42
+
+; <label>:41                                      ; preds = %40
+  unreachable
+
+; <label>:42                                      ; preds = %40, %39
+  invoke void @_ZNK4llvm14PatternToMatch17getPredicateCheckEv(%8* noalias sret undef, %75* null)
+          to label %43 unwind label %59
+
+; <label>:43                                      ; preds = %42
+  %44 = icmp eq %12* null, null                   ; <i1> [#uses=1]
+  br i1 %44, label %46, label %45
+
+; <label>:45                                      ; preds = %43
+  unreachable
+
+; <label>:46                                      ; preds = %43
+  invoke void @_ZNSsC1ERKSs(%8* undef, %8* undef)
+          to label %47 unwind label %62
+
+; <label>:47                                      ; preds = %46
+  %48 = invoke %22* @_ZNSt3mapIN12_GLOBAL__N_117OperandsSignatureES_ISsS_IN4llvm3MVT15SimpleValueTypeES_IS4_S_ISsNS0_15InstructionMemoESt4lessISsESaISt4pairIKSsS5_EEES6_IS4_ESaIS8_IKS4_SC_EEESD_SaIS8_ISE_SH_EEES7_SaIS8_IS9_SK_EEES6_IS1_ESaIS8_IKS1_SN_EEEixERSP_(%22* undef, %14* undef)
+          to label %49 unwind label %63           ; <%22*> [#uses=1]
+
+; <label>:49                                      ; preds = %47
+  %50 = invoke %22* @_ZNSt3mapISsS_IN4llvm3MVT15SimpleValueTypeES_IS2_S_ISsN12_GLOBAL__N_115InstructionMemoESt4lessISsESaISt4pairIKSsS4_EEES5_IS2_ESaIS7_IKS2_SB_EEESC_SaIS7_ISD_SG_EEES6_SaIS7_IS8_SJ_EEEixERS8_(%22* %48, %8* undef)
+          to label %51 unwind label %63           ; <%22*> [#uses=1]
+
+; <label>:51                                      ; preds = %49
+  %52 = invoke %22* @1(%22* %50, i32* undef)
+          to label %53 unwind label %63           ; <%22*> [#uses=1]
+
+; <label>:53                                      ; preds = %51
+  %54 = invoke %22* @f3(%22* %52, i32* undef)
+          to label %55 unwind label %63           ; <%22*> [#uses=0]
+
+; <label>:55                                      ; preds = %53
+  unreachable
+
+; <label>:56                                      ; preds = %7
+  ret void
+
+; <label>:57                                      ; preds = %2
+  unreachable
+
+; <label>:58                                      ; preds = %23, %21
+  unreachable
+
+; <label>:59                                      ; preds = %42, %32, %27
+  unreachable
+
+; <label>:60                                      ; preds = %37
+  unreachable
+
+; <label>:61                                      ; preds = %38
+  unreachable
+
+; <label>:62                                      ; preds = %46
+  unreachable
+
+; <label>:63                                      ; preds = %53, %51, %49, %47
+  unreachable
+}
+
+declare i32 @_ZN4llvm7TGLexer8LexTokenEv(%86*) align 2
+
+declare void @_ZN4llvm8TGParserD1Ev(%87*) align 2
+
+declare i32 @_ZN4llvm9SourceMgr18AddNewSourceBufferEPNS_12MemoryBufferENS_5SMLocE(%27*, %32*, %9* noalias) align 2
+
+define i32 @main(i32, i8**) {
+  br i1 undef, label %3, label %4
+
+; <label>:3                                       ; preds = %2
+  unreachable
+
+; <label>:4                                       ; preds = %2
+  %5 = icmp eq i32 0, 0                           ; <i1> [#uses=1]
+  br i1 %5, label %7, label %6
+
+; <label>:6                                       ; preds = %4
+  unreachable
+
+; <label>:7                                       ; preds = %4
+  br i1 undef, label %8, label %9
+
+; <label>:8                                       ; preds = %7
+  br i1 undef, label %10, label %9
+
+; <label>:9                                       ; preds = %8, %7
+  br i1 undef, label %14, label %18
+
+; <label>:10                                      ; preds = %8
+  br label %11
+
+; <label>:11                                      ; preds = %12, %10
+  br i1 undef, label %12, label %13
+
+; <label>:12                                      ; preds = %11
+  br label %11
+
+; <label>:13                                      ; preds = %11
+  unreachable
+
+; <label>:14                                      ; preds = %9
+  br i1 undef, label %15, label %17
+
+; <label>:15                                      ; preds = %14
+  br i1 undef, label %17, label %16
+
+; <label>:16                                      ; preds = %15
+  unreachable
+
+; <label>:17                                      ; preds = %15, %14
+  unreachable
+
+; <label>:18                                      ; preds = %9
+  %19 = invoke i32 @_ZN4llvm9SourceMgr18AddNewSourceBufferEPNS_12MemoryBufferENS_5SMLocE(%27* @_ZL6SrcMgr, %32* undef, %9* noalias undef)
+          to label %20 unwind label %34           ; <i32> [#uses=0]
+
+; <label>:20                                      ; preds = %18
+  %21 = invoke %15* @_ZNSt6vectorISsSaISsEEaSERKS1_(%15* getelementptr inbounds (%27* @_ZL6SrcMgr, i64 0, i32 1), %15* getelementptr inbounds (%13* @_ZN12_GLOBAL__N_111IncludeDirsE, i64 0, i32 1, i32 0))
+          to label %22 unwind label %34           ; <%15*> [#uses=0]
+
+; <label>:22                                      ; preds = %20
+  %23 = getelementptr inbounds %27* null, i64 0, i32 0, i32 0, i32 0, i32 1 ; <%31**> [#uses=1]
+  %24 = load %31** %23, align 8                   ; <%31*> [#uses=1]
+  %25 = ptrtoint %31* %24 to i64                  ; <i64> [#uses=1]
+  %26 = sub i64 %25, 0                            ; <i64> [#uses=1]
+  %27 = icmp ugt i64 %26, 15                      ; <i1> [#uses=1]
+  br i1 %27, label %29, label %28
+
+; <label>:28                                      ; preds = %22
+  unreachable
+
+; <label>:29                                      ; preds = %22
+  %30 = invoke i32 @_ZN4llvm7TGLexer8LexTokenEv(%86* undef)
+          to label %31 unwind label %35           ; <i32> [#uses=0]
+
+; <label>:31                                      ; preds = %29
+  invoke void @_ZN4llvm8TGParserD1Ev(%87* null)
+          to label %32 unwind label %34
+
+; <label>:32                                      ; preds = %31
+  %33 = icmp eq i8 0, 0                           ; <i1> [#uses=1]
+  br i1 %33, label %36, label %56
+
+; <label>:34                                      ; preds = %31, %20, %18
+  unreachable
+
+; <label>:35                                      ; preds = %29
+  unreachable
+
+; <label>:36                                      ; preds = %32
+  %37 = invoke i32 @_ZNKSs7compareEPKc(%8* getelementptr inbounds (%6* @_ZN12_GLOBAL__N_114OutputFilenameE, i64 0, i32 1, i32 0), i8* getelementptr inbounds ([2 x i8]* @.str533653, i64 0, i64 0))
+          to label %38 unwind label %57           ; <i32> [#uses=1]
+
+; <label>:38                                      ; preds = %36
+  %39 = icmp eq i32 %37, 0                        ; <i1> [#uses=1]
+  br i1 %39, label %43, label %40
+
+; <label>:40                                      ; preds = %38
+  %41 = invoke i8* @_Znwm(i64 56)
+          to label %42 unwind label %58           ; <i8*> [#uses=0]
+
+; <label>:42                                      ; preds = %40
+  unreachable
+
+; <label>:43                                      ; preds = %38
+  %44 = load i32* getelementptr inbounds (%0* @_ZN12_GLOBAL__N_16ActionE, i64 0, i32 1, i32 0), align 8 ; <i32> [#uses=1]
+  switch i32 %44, label %56 [
+    i32 0, label %45
+    i32 12, label %48
+    i32 13, label %51
+  ]
+
+; <label>:45                                      ; preds = %43
+  br i1 undef, label %46, label %47
+
+; <label>:46                                      ; preds = %45
+  unreachable
+
+; <label>:47                                      ; preds = %45
+  unreachable
+
+; <label>:48                                      ; preds = %43
+  invoke void @_ZN4llvm18CodeGenDAGPatternsC1ERNS_12RecordKeeperE(%53* undef, %21* @_ZN4llvm7RecordsE)
+          to label %50 unwind label %49
+
+; <label>:49                                      ; preds = %48
+  unreachable
+
+; <label>:50                                      ; preds = %48
+  unreachable
+
+; <label>:51                                      ; preds = %43
+  invoke void @_ZN4llvm18CodeGenDAGPatternsC1ERNS_12RecordKeeperE(%53* undef, %21* @_ZN4llvm7RecordsE)
+          to label %53 unwind label %52
+
+; <label>:52                                      ; preds = %51
+  unreachable
+
+; <label>:53                                      ; preds = %51
+  invoke void @0(%81* undef, %45* null)
+          to label %54 unwind label %60
+
+; <label>:54                                      ; preds = %53
+  invoke void @_ZN4llvm18CodeGenDAGPatternsD1Ev(%53* undef)
+          to label %55 unwind label %59
+
+; <label>:55                                      ; preds = %54
+  unreachable
+
+; <label>:56                                      ; preds = %43, %32
+  ret i32 1
+
+; <label>:57                                      ; preds = %36
+  unreachable
+
+; <label>:58                                      ; preds = %40
+  unreachable
+
+; <label>:59                                      ; preds = %54
+  unreachable
+
+; <label>:60                                      ; preds = %53
+  unreachable
+}
+
+declare i8* @pthread_getspecific(i32) nounwind
+
+declare i32 @pthread_setspecific(i32, i8*) nounwind
+
+declare i32 @pthread_key_delete(i32) nounwind
+
+declare i32 @pthread_key_create(i32*, void (i8*)*) nounwind
+
+declare i32 @pthread_mutex_trylock(%34*) nounwind
+
+declare i32 @pthread_mutex_unlock(%34*) nounwind
+
+declare i32 @pthread_mutex_lock(%34*) nounwind
+
+declare i32 @pthread_mutexattr_init(%2*) nounwind
+
+declare i32 @pthread_mutexattr_settype(%2*, i32) nounwind
+
+declare i32 @pthread_mutex_init(%34*, %2*) nounwind
+
+declare i32 @pthread_mutexattr_destroy(%2*) nounwind
+
+declare extern_weak i32 @pthread_once(i32*, void ()*)
+
+declare extern_weak i32 @pthread_create(i64*, %33*, i8* (i8*)*, i8*)
+
+declare extern_weak i32 @pthread_cancel(i64)