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1e7c397a16
The code paths in the absence of TargetMachine, TargetLowering or TargetRegisterInfo are poorly tested. As rL285987 said, requiring TargetPassConfig allows us to delete many (untested) checks littered everywhere. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D73754
76 lines
2.9 KiB
LLVM
76 lines
2.9 KiB
LLVM
; RUN: opt -S -mtriple=x86_64 -codegenprepare %s | FileCheck %s
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;
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; Generated from the following source with:
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; clang -O2 -g -S -emit-llvm -mllvm -stop-after=indirectbr-expand test.cpp
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;
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; extern void use(int);
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; extern int foo(long long);
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;
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; void test(int p)
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; {
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; int i = p + 4;
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; (void)foo(i); // sign extension of i
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; if (p)
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; return;
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; use(i); // use of original i
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; }
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;
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; PR39845: Check that CodeGenPrepare does not drop the reference to a local when it is
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; sign-extended and used later.
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;
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; CHECK: define{{.*}}test
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; CHECK: call{{.*}}dbg.value(metadata i32 %p
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; CHECK: call{{.*}}dbg.value(metadata i32 %add
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;
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define dso_local void @_Z4testi(i32 %p) local_unnamed_addr !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata i32 %p, metadata !12, metadata !DIExpression()), !dbg !14
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%add = add nsw i32 %p, 4, !dbg !15
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call void @llvm.dbg.value(metadata i32 %add, metadata !13, metadata !DIExpression()), !dbg !16
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%conv = sext i32 %add to i64, !dbg !17
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%call = tail call i32 @_Z3foox(i64 %conv), !dbg !18
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%tobool = icmp eq i32 %p, 0, !dbg !19
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br i1 %tobool, label %if.end, label %cleanup, !dbg !21
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if.end:
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tail call void @_Z3usei(i32 %add), !dbg !22
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br label %cleanup, !dbg !23
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cleanup:
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ret void, !dbg !23
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}
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declare dso_local i32 @_Z3foox(i64) local_unnamed_addr
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declare dso_local void @_Z3usei(i32) local_unnamed_addr
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!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)
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!1 = !DIFile(filename: "test.cpp", directory: "/home/test/src")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 8.0.0 (trunk 348209)"}
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!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)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12, !13}
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!12 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 4, type: !10)
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!13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 6, type: !10)
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!14 = !DILocation(line: 4, column: 15, scope: !7)
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!15 = !DILocation(line: 6, column: 13, scope: !7)
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!16 = !DILocation(line: 6, column: 7, scope: !7)
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!17 = !DILocation(line: 7, column: 13, scope: !7)
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!18 = !DILocation(line: 7, column: 9, scope: !7)
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!19 = !DILocation(line: 8, column: 7, scope: !20)
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!20 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
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!21 = !DILocation(line: 8, column: 7, scope: !7)
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!22 = !DILocation(line: 10, column: 3, scope: !7)
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!23 = !DILocation(line: 11, column: 1, scope: !7)
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