forked from OSchip/llvm-project
121 lines
5.1 KiB
LLVM
121 lines
5.1 KiB
LLVM
; RUN: llc -O1 -filetype=obj -mtriple=x86_64-apple-darwin < %s > %t
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; RUN: llvm-dwarfdump -v %t | FileCheck %s
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; RUN: llvm-objdump -r %t | FileCheck -check-prefix=DARWIN %s
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; RUN: llc -O1 -filetype=obj -mtriple=x86_64-pc-linux-gnu < %s > %t
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; RUN: llvm-dwarfdump -v %t | FileCheck %s
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; RUN: llvm-objdump -r %t | FileCheck -check-prefix=LINUX %s
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; PR9493
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; Adapted from the original test case in r127757.
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; We use 'llc -O1' to induce variable 'x' to live in different locations.
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; We don't actually care where 'x' lives, or what exact optimizations get
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; used, as long as 'x' moves around we're fine.
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; // The variable 'x' lives in different locations, so it needs an entry in
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; // the .debug_loc table section, referenced by DW_AT_location.
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; // This ref is not relocatable on Darwin, and is relocatable elsewhere.
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; extern int g(int, int);
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; extern int a;
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;
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; void f(void) {
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; int x;
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; a = g(0, 0);
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; x = 1;
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; while (x & 1) { x *= a; }
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; a = g(x, 0);
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; x = 2;
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; while (x & 2) { x *= a; }
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; a = g(0, x);
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; }
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; // The 'x' variable and its symbol reference location
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x00000000
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; Check that the location contains only 4 ranges.
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; CHECK-NEXT: [0x{{[0-9a-f]*}}, 0x{{[0-9a-f]*}})
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; CHECK-NEXT: [0x{{[0-9a-f]*}}, 0x{{[0-9a-f]*}})
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; CHECK-NEXT: [0x{{[0-9a-f]*}}, 0x{{[0-9a-f]*}})
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; CHECK-NEXT: [0x{{[0-9a-f]*}}, 0x{{[0-9a-f]*}}){{.*}})
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; CHECK-NEXT: DW_AT_name {{.*}} "x"
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; CHECK-NEXT: DW_AT_decl_file
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; CHECK-NEXT: DW_AT_decl_line
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; CHECK-NEXT: DW_AT_type
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; Check that we have no relocations in Darwin's output.
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; DARWIN-NOT: X86_64_RELOC{{.*}} __debug_loc
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; Check we have a relocation for the debug_loc entry in Linux output.
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; LINUX: RELOCATION RECORDS FOR [.debug_info]
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; LINUX-NOT: RELOCATION RECORDS
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; LINUX: R_X86_64{{.*}} .debug_loc
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; ModuleID = 'simple.c'
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target datalayout = "e-p:32:32:32-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-n32"
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@a = external global i32
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define void @f() nounwind !dbg !0 {
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entry:
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%call = tail call i32 @g(i32 0, i32 0) nounwind, !dbg !8
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store i32 %call, i32* @a, align 4, !dbg !8
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tail call void @llvm.dbg.value(metadata i32 1, metadata !5, metadata !DIExpression()), !dbg !13
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br label %while.body
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while.body: ; preds = %entry, %while.body
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%x.017 = phi i32 [ 1, %entry ], [ %mul, %while.body ]
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%mul = mul nsw i32 %call, %x.017, !dbg !14
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%and = and i32 %mul, 1, !dbg !14
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%tobool = icmp eq i32 %and, 0, !dbg !14
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br i1 %tobool, label %while.end, label %while.body, !dbg !14
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while.end: ; preds = %while.body
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tail call void @llvm.dbg.value(metadata i32 %mul, metadata !5, metadata !DIExpression()), !dbg !14
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%call4 = tail call i32 @g(i32 %mul, i32 0) nounwind, !dbg !15
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store i32 %call4, i32* @a, align 4, !dbg !15
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tail call void @llvm.dbg.value(metadata i32 2, metadata !5, metadata !DIExpression()), !dbg !17
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br label %while.body9
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while.body9: ; preds = %while.end, %while.body9
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%x.116 = phi i32 [ 2, %while.end ], [ %mul12, %while.body9 ]
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%mul12 = mul nsw i32 %call4, %x.116, !dbg !18
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%and7 = and i32 %mul12, 2, !dbg !18
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%tobool8 = icmp eq i32 %and7, 0, !dbg !18
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br i1 %tobool8, label %while.end13, label %while.body9, !dbg !18
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while.end13: ; preds = %while.body9
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tail call void @llvm.dbg.value(metadata i32 %mul12, metadata !5, metadata !DIExpression()), !dbg !18
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%call15 = tail call i32 @g(i32 0, i32 %mul12) nounwind, !dbg !19
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store i32 %call15, i32* @a, align 4, !dbg !19
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ret void, !dbg !20
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}
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declare i32 @g(i32, i32)
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declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!24}
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!0 = distinct !DISubprogram(name: "f", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 4, file: !23, scope: !1, type: !3, retainedNodes: !22)
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!1 = !DIFile(filename: "simple.c", directory: "/home/rengol01/temp/tests/dwarf/relocation")
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: true, emissionKind: FullDebug, file: !23, enums: !{}, retainedTypes: !{}, imports: null)
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!3 = !DISubroutineType(types: !4)
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!4 = !{null}
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!5 = !DILocalVariable(name: "x", line: 5, scope: !6, file: !1, type: !7)
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!6 = distinct !DILexicalBlock(line: 4, column: 14, file: !23, scope: !0)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !DILocation(line: 6, column: 3, scope: !6)
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!12 = !{i32 1}
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!13 = !DILocation(line: 7, column: 3, scope: !6)
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!14 = !DILocation(line: 8, column: 3, scope: !6)
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!15 = !DILocation(line: 9, column: 3, scope: !6)
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!16 = !{i32 2}
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!17 = !DILocation(line: 10, column: 3, scope: !6)
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!18 = !DILocation(line: 11, column: 3, scope: !6)
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!19 = !DILocation(line: 12, column: 3, scope: !6)
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!20 = !DILocation(line: 13, column: 1, scope: !6)
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!22 = !{!5}
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!23 = !DIFile(filename: "simple.c", directory: "/home/rengol01/temp/tests/dwarf/relocation")
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!24 = !{i32 1, !"Debug Info Version", i32 3}
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