xref: /llvm-project/llvm/test/Transforms/LoopStrengthReduce/ivchain.ll (revision abb9f9fa06ef22be2b0287b9047d5cfed71d91d4)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
2; RUN: opt < %s -loop-reduce -S | FileCheck %s
3; RUN: opt -passes='require<scalar-evolution>,require<target-ir>,loop(loop-reduce)' < %s -S | FileCheck %s
4;
5; PR11782: bad cast to AddRecExpr.
6; A sign extend feeds an IVUser and cannot be hoisted into the AddRec.
7; CollectIVChains should bailout on this case.
8
9
10; Provide legal integer types.
11target datalayout = "n8:16:32:64"
12
13%struct = type { ptr, ptr, i16, i64, i16, i16, i16, i64, i64, i16, ptr, i64, i64, i64 }
14
15define i32 @test(ptr %h, i32 %more, i1 %arg) nounwind uwtable {
16; CHECK-LABEL: define i32 @test
17; CHECK-SAME: (ptr [[H:%.*]], i32 [[MORE:%.*]], i1 [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
18; CHECK-NEXT:  entry:
19; CHECK-NEXT:    br i1 [[ARG]], label [[LAND_END238:%.*]], label [[RETURN:%.*]]
20; CHECK:       land.end238:
21; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
22; CHECK:       for.body:
23; CHECK-NEXT:    [[LSR_IV:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[SW_EPILOG:%.*]] ], [ undef, [[LAND_END238]] ]
24; CHECK-NEXT:    [[COLUMN_N_0:%.*]] = phi i16 [ 0, [[LAND_END238]] ], [ [[INC601:%.*]], [[SW_EPILOG]] ]
25; CHECK-NEXT:    [[CONV250:%.*]] = sext i16 [[COLUMN_N_0]] to i32
26; CHECK-NEXT:    [[ADD257:%.*]] = add nsw i32 [[CONV250]], 1
27; CHECK-NEXT:    [[CONV258:%.*]] = trunc i32 [[ADD257]] to i16
28; CHECK-NEXT:    [[CMP263:%.*]] = icmp ult i16 undef, 2
29; CHECK-NEXT:    br label [[IF_END388:%.*]]
30; CHECK:       if.end388:
31; CHECK-NEXT:    [[CALL405:%.*]] = call signext i16 @SQLColAttribute(ptr undef, i16 zeroext [[CONV258]], i16 zeroext 1003, ptr null, i16 signext 0, ptr null, ptr [[LSR_IV]]) #[[ATTR1:[0-9]+]]
32; CHECK-NEXT:    br label [[SW_EPILOG]]
33; CHECK:       sw.epilog:
34; CHECK-NEXT:    [[INC601]] = add i16 [[COLUMN_N_0]], 1
35; CHECK-NEXT:    [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 88
36; CHECK-NEXT:    br label [[FOR_BODY]]
37; CHECK:       return:
38; CHECK-NEXT:    ret i32 1
39;
40entry:
41  br i1 %arg, label %land.end238, label %return
42
43land.end238:                                      ; preds = %if.end229
44  br label %for.body
45
46for.body:                                         ; preds = %sw.epilog, %land.end238
47  %fbh.0 = phi ptr [ undef, %land.end238 ], [ %incdec.ptr, %sw.epilog ]
48  %column_n.0 = phi i16 [ 0, %land.end238 ], [ %inc601, %sw.epilog ]
49  %conv250 = sext i16 %column_n.0 to i32
50  %add257 = add nsw i32 %conv250, 1
51  %conv258 = trunc i32 %add257 to i16
52  %cmp263 = icmp ult i16 undef, 2
53  br label %if.end388
54
55if.end388:                                        ; preds = %if.then380, %if.else356
56  %ColLength = getelementptr inbounds %struct, ptr %fbh.0, i64 0, i32 7
57  %call405 = call signext i16 @SQLColAttribute(ptr undef, i16 zeroext %conv258, i16 zeroext 1003, ptr null, i16 signext 0, ptr null, ptr %ColLength) nounwind
58  br label %sw.epilog
59
60sw.epilog:                                        ; preds = %sw.bb542, %sw.bb523, %if.end475
61  %inc601 = add i16 %column_n.0, 1
62  %incdec.ptr = getelementptr inbounds %struct, ptr %fbh.0, i64 1
63  br label %for.body
64
65return:                                           ; preds = %entry
66  ret i32 1
67}
68
69declare signext i16 @SQLColAttribute(ptr, i16 zeroext, i16 zeroext, ptr, i16 signext, ptr, ptr)
70