1 ; RUN: opt -codegenprepare -S %s | FileCheck %s
3 ; Generated from the following source with:
4 ; clang -O2 -g -S -emit-llvm -mllvm -stop-after=indirectbr-expand test.cpp
6 ; extern void use(int);
7 ; extern int foo(long long);
12 ; (void)foo(i); // sign extension of i
15 ; use(i); // use of original i
18 ; PR39845: Check that CodeGenPrepare does not drop the reference to a local when it is
19 ; sign-extended and used later.
21 ; CHECK: define{{.*}}test
22 ; CHECK: call{{.*}}dbg.value(metadata i32 %p
23 ; CHECK: call{{.*}}dbg.value(metadata i32 %add
25 define dso_local void @_Z4testi(i32 %p) local_unnamed_addr !dbg !7 {
27 call void @llvm.dbg.value(metadata i32 %p, metadata !12, metadata !DIExpression()), !dbg !14
28 %add = add nsw i32 %p, 4, !dbg !15
29 call void @llvm.dbg.value(metadata i32 %add, metadata !13, metadata !DIExpression()), !dbg !16
30 %conv = sext i32 %add to i64, !dbg !17
31 %call = tail call i32 @_Z3foox(i64 %conv), !dbg !18
32 %tobool = icmp eq i32 %p, 0, !dbg !19
33 br i1 %tobool, label %if.end, label %cleanup, !dbg !21
36 tail call void @_Z3usei(i32 %add), !dbg !22
37 br label %cleanup, !dbg !23
43 declare dso_local i32 @_Z3foox(i64) local_unnamed_addr
44 declare dso_local void @_Z3usei(i32) local_unnamed_addr
46 declare void @llvm.dbg.value(metadata, metadata, metadata)
49 !llvm.module.flags = !{!3, !4, !5}
52 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 348209)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
53 !1 = !DIFile(filename: "test.cpp", directory: "/home/test/src")
55 !3 = !{i32 2, !"Dwarf Version", i32 4}
56 !4 = !{i32 2, !"Debug Info Version", i32 3}
57 !5 = !{i32 1, !"wchar_size", i32 4}
58 !6 = !{!"clang version 8.0.0 (trunk 348209)"}
59 !7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testi", scope: !1, file: !1, line: 4, type: !8, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
60 !8 = !DISubroutineType(types: !9)
62 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
64 !12 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 4, type: !10)
65 !13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 6, type: !10)
66 !14 = !DILocation(line: 4, column: 15, scope: !7)
67 !15 = !DILocation(line: 6, column: 13, scope: !7)
68 !16 = !DILocation(line: 6, column: 7, scope: !7)
69 !17 = !DILocation(line: 7, column: 13, scope: !7)
70 !18 = !DILocation(line: 7, column: 9, scope: !7)
71 !19 = !DILocation(line: 8, column: 7, scope: !20)
72 !20 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
73 !21 = !DILocation(line: 8, column: 7, scope: !7)
74 !22 = !DILocation(line: 10, column: 3, scope: !7)
75 !23 = !DILocation(line: 11, column: 1, scope: !7)