1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s
3 ; LTO of clang, which mistakenly uses no TargetLoweringInfo, causes a
4 ; miscompile. ReuseOrCreateCast replace ptrtoint operand with undef.
5 ; Reproducing the miscompile requires no triple, hence no "TTI".
8 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-n8:16:32:64-S128"
10 ; Verify that nothing uses the "dead" ptrtoint from "undef".
11 ; CHECK-LABEL: @VerifyDiagnosticConsumerTest(
13 ; "dead" ptrpoint not emitted (or dead code eliminated) with
14 ; current LSR cost model.
15 ; CHECK-NOT: = ptrtoint i8* undef to i64
18 define void @VerifyDiagnosticConsumerTest() unnamed_addr nounwind uwtable align 2 {
20 %tmp3 = call i8* @getCharData() nounwind
21 %tmp4 = call i8* @getCharData() nounwind
22 %tmp5 = ptrtoint i8* %tmp4 to i64
23 %tmp6 = ptrtoint i8* %tmp3 to i64
24 %tmp7 = sub i64 %tmp5, %tmp6
25 br i1 undef, label %bb87, label %.preheader
27 .preheader: ; preds = %bb10, %bb
28 br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42.thread, label %bb10
30 bb10: ; preds = %.preheader
31 br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42, label %.preheader
33 _ZNK4llvm9StringRef4findEcm.exit42: ; preds = %bb10
34 br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit42.thread, label %.lr.ph
36 _ZNK4llvm9StringRef4findEcm.exit42.thread: ; preds = %_ZNK4llvm9StringRef4findEcm.exit42, %.preheader
39 .lr.ph: ; preds = %_ZNK4llvm9StringRef4findEcm.exit42
42 _ZNK4llvm9StringRef4findEcm.exit.loopexit: ; preds = %bb63
43 %tmp21 = icmp eq i64 %i.0.i, -1
44 br i1 %tmp21, label %_ZNK4llvm9StringRef4findEcm.exit._crit_edge, label %bb36
46 _ZNK4llvm9StringRef4findEcm.exit._crit_edge: ; preds = %bb61, %_ZNK4llvm9StringRef4findEcm.exit.loopexit
49 bb36: ; preds = %_ZNK4llvm9StringRef4findEcm.exit.loopexit, %.lr.ph
50 %loc.063 = phi i64 [ undef, %.lr.ph ], [ %i.0.i, %_ZNK4llvm9StringRef4findEcm.exit.loopexit ]
51 switch i8 undef, label %bb57 [
56 bb48: ; preds = %bb36, %bb36
62 bb58: ; preds = %bb57, %bb48
63 %tmp59 = icmp ugt i64 %tmp7, undef
64 %tmp60 = select i1 %tmp59, i64 undef, i64 %tmp7
67 bb61: ; preds = %bb63, %bb58
68 %i.0.i = phi i64 [ %tmp60, %bb58 ], [ %tmp67, %bb63 ]
69 %tmp62 = icmp eq i64 %i.0.i, %tmp7
70 br i1 %tmp62, label %_ZNK4llvm9StringRef4findEcm.exit._crit_edge, label %bb63
73 %tmp64 = getelementptr inbounds i8, i8* %tmp3, i64 %i.0.i
74 %tmp65 = load i8, i8* %tmp64, align 1
75 %tmp67 = add i64 %i.0.i, 1
76 br i1 undef, label %_ZNK4llvm9StringRef4findEcm.exit.loopexit, label %bb61
82 declare i8* @getCharData()