161 lines
		
	
	
		
			8.1 KiB
		
	
	
	
		
			LLVM
		
	
	
	
			
		
		
	
	
			161 lines
		
	
	
		
			8.1 KiB
		
	
	
	
		
			LLVM
		
	
	
	
| ; RUN: llc -march=mips -mcpu=mips32r2 -O1 -filetype=obj -relocation-model=pic <%s | \
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| ; RUN:    llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F0
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| ; RUN: llc -march=mips -mcpu=mips32r2 -O1 -filetype=obj -relocation-model=pic <%s | \
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| ; RUN:    llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F1
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| 
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| ; void foo(int *);
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| ;
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| ; int f0(int a, int b, int c, int d, int e) {
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| ;   int x = a + b + c + d + e;
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| ;   foo(&x);
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| ;   return x;
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| ; }
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| ;
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| ; int f1(int a, int b, int c, int d, int e) {
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| ;   int x __attribute__((aligned(16))) = a + b + c + d + e;
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| ;   foo(&x);
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| ;   return x;
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| ; }
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| 
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| declare void @llvm.lifetime.start(i64, i8* nocapture)
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| declare void @llvm.lifetime.end(i64, i8* nocapture)
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| 
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| declare void @foo(i32*)
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| 
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| ; F0: DW_AT_name {{.*}}"e"
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| ; F0: DW_TAG_variable
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| ; F0-NEXT: DW_AT_location [DW_FORM_sec_offset]   ([[LOC:.*]])
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| ; F0-NEXT: DW_AT_name [DW_FORM_strp]     ( .debug_str[0x0000006b] = "x")
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| ;
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| ; x -> DW_OP_reg1(51)
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| ; F0: [[LOC]]: Beginning address offset: 0x0000000000000028
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| ; F0:             Ending address offset: 0x000000000000002c
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| ; F0:              Location description: 51
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| 
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| define i32 @f0(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !4 {
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| entry:
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|   %x = alloca i32, align 4
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|   tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !9,  metadata !DIExpression()), !dbg !27
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|   tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !10, metadata !DIExpression()), !dbg !28
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|   tail call void @llvm.dbg.value(metadata i32 %c, i64 0, metadata !11, metadata !DIExpression()), !dbg !29
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|   tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !12, metadata !DIExpression()), !dbg !30
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|   tail call void @llvm.dbg.value(metadata i32 %e, i64 0, metadata !13, metadata !DIExpression()), !dbg !31
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|   %0 = bitcast i32* %x to i8*, !dbg !32
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|   call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !32
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|   %add = add nsw i32 %b, %a, !dbg !33
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|   %add1 = add nsw i32 %add, %c, !dbg !34
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|   %add2 = add nsw i32 %add1, %d, !dbg !35
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|   %add3 = add nsw i32 %add2, %e, !dbg !36
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|   tail call void @llvm.dbg.value(metadata i32 %add3, i64 0, metadata !14, metadata !DIExpression()), !dbg !37
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|   store i32 %add3, i32* %x, align 4, !dbg !37, !tbaa !38
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|   tail call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !14, metadata !26), !dbg !37
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|   call void @foo(i32* nonnull %x) #4, !dbg !42
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|   call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !14, metadata !26), !dbg !37
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|   %1 = load i32, i32* %x, align 4, !dbg !43, !tbaa !38
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|   call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !44
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|   ret i32 %1, !dbg !45
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| }
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| 
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| 
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| ; F1: DW_AT_name {{.*}}"x"
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| ; F1: DW_AT_name {{.*}}"e"
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| ; F1: DW_TAG_variable
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| ; F1-NEXT: DW_AT_location [DW_FORM_sec_offset]   ([[LOC:.*]])
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| ; F1-NEXT: DW_AT_name [DW_FORM_strp]     ( .debug_str[0x0000006b] = "x")
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| 
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| ; x -> DW_OP_reg1(51)
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| ; F1: [[LOC]]: Beginning address offset: 0x0000000000000080
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| ; F1:             Ending address offset: 0x0000000000000084
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| ; F1:              Location description: 51
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| 
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| define i32 @f1(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !15 {
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| entry:
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|   %x = alloca i32, align 16
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|   tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !17, metadata !DIExpression()), !dbg !46
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|   tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !18, metadata !DIExpression()), !dbg !47
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|   tail call void @llvm.dbg.value(metadata i32 %c, i64 0, metadata !19, metadata !DIExpression()), !dbg !48
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|   tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !20, metadata !DIExpression()), !dbg !49
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|   tail call void @llvm.dbg.value(metadata i32 %e, i64 0, metadata !21, metadata !DIExpression()), !dbg !50
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|   %0 = bitcast i32* %x to i8*, !dbg !51
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|   call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !51
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|   %add = add nsw i32 %b, %a, !dbg !52
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|   %add1 = add nsw i32 %add, %c, !dbg !53
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|   %add2 = add nsw i32 %add1, %d, !dbg !54
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|   %add3 = add nsw i32 %add2, %e, !dbg !55
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|   tail call void @llvm.dbg.value(metadata i32 %add3, i64 0, metadata !22, metadata !DIExpression()), !dbg !56
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|   store i32 %add3, i32* %x, align 16, !dbg !56, !tbaa !38
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|   tail call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !22, metadata !26), !dbg !56
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|   call void @foo(i32* nonnull %x) #4, !dbg !57
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|   call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !22, metadata !26), !dbg !56
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|   %1 = load i32, i32* %x, align 16, !dbg !58, !tbaa !38
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|   call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !59
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|   ret i32 %1, !dbg !60
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| }
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| 
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| declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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| 
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| !llvm.dbg.cu = !{!0}
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| !llvm.module.flags = !{!23, !24}
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| !llvm.ident = !{!25}
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| 
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| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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| !1 = !DIFile(filename: "test.c", directory: "/home/vk/repos/tmp/dwarf")
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| !2 = !{}
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| !4 = distinct !DISubprogram(name: "f0", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
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| !5 = !DISubroutineType(types: !6)
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| !6 = !{!7, !7, !7, !7, !7, !7}
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| !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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| !8 = !{!9, !10, !11, !12, !13, !14}
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| !9 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 4, type: !7)
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| !10 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 4, type: !7)
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| !11 = !DILocalVariable(name: "c", arg: 3, scope: !4, file: !1, line: 4, type: !7)
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| !12 = !DILocalVariable(name: "d", arg: 4, scope: !4, file: !1, line: 4, type: !7)
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| !13 = !DILocalVariable(name: "e", arg: 5, scope: !4, file: !1, line: 4, type: !7)
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| !14 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 5, type: !7)
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| !15 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !16)
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| !16 = !{!17, !18, !19, !20, !21, !22}
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| !17 = !DILocalVariable(name: "a", arg: 1, scope: !15, file: !1, line: 11, type: !7)
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| !18 = !DILocalVariable(name: "b", arg: 2, scope: !15, file: !1, line: 11, type: !7)
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| !19 = !DILocalVariable(name: "c", arg: 3, scope: !15, file: !1, line: 11, type: !7)
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| !20 = !DILocalVariable(name: "d", arg: 4, scope: !15, file: !1, line: 11, type: !7)
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| !21 = !DILocalVariable(name: "e", arg: 5, scope: !15, file: !1, line: 11, type: !7)
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| !22 = !DILocalVariable(name: "x", scope: !15, file: !1, line: 12, type: !7)
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| !23 = !{i32 2, !"Dwarf Version", i32 4}
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| !24 = !{i32 2, !"Debug Info Version", i32 3}
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| !25 = !{!"clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)"}
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| !26 = !DIExpression(DW_OP_deref)
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| !27 = !DILocation(line: 4, column: 12, scope: !4)
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| !28 = !DILocation(line: 4, column: 19, scope: !4)
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| !29 = !DILocation(line: 4, column: 26, scope: !4)
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| !30 = !DILocation(line: 4, column: 33, scope: !4)
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| !31 = !DILocation(line: 4, column: 40, scope: !4)
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| !32 = !DILocation(line: 5, column: 3, scope: !4)
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| !33 = !DILocation(line: 5, column: 13, scope: !4)
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| !34 = !DILocation(line: 5, column: 17, scope: !4)
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| !35 = !DILocation(line: 5, column: 21, scope: !4)
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| !36 = !DILocation(line: 5, column: 25, scope: !4)
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| !37 = !DILocation(line: 5, column: 7, scope: !4)
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| !38 = !{!39, !39, i64 0}
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| !39 = !{!"int", !40, i64 0}
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| !40 = !{!"omnipotent char", !41, i64 0}
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| !41 = !{!"Simple C/C++ TBAA"}
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| !42 = !DILocation(line: 6, column: 3, scope: !4)
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| !43 = !DILocation(line: 7, column: 10, scope: !4)
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| !44 = !DILocation(line: 8, column: 1, scope: !4)
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| !45 = !DILocation(line: 7, column: 3, scope: !4)
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| !46 = !DILocation(line: 11, column: 12, scope: !15)
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| !47 = !DILocation(line: 11, column: 19, scope: !15)
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| !48 = !DILocation(line: 11, column: 26, scope: !15)
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| !49 = !DILocation(line: 11, column: 33, scope: !15)
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| !50 = !DILocation(line: 11, column: 40, scope: !15)
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| !51 = !DILocation(line: 12, column: 3, scope: !15)
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| !52 = !DILocation(line: 12, column: 42, scope: !15)
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| !53 = !DILocation(line: 12, column: 46, scope: !15)
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| !54 = !DILocation(line: 12, column: 50, scope: !15)
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| !55 = !DILocation(line: 12, column: 54, scope: !15)
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| !56 = !DILocation(line: 12, column: 7, scope: !15)
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| !57 = !DILocation(line: 13, column: 3, scope: !15)
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| !58 = !DILocation(line: 14, column: 10, scope: !15)
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| !59 = !DILocation(line: 15, column: 1, scope: !15)
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| !60 = !DILocation(line: 14, column: 3, scope: !15)
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