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-rw-r--r--test/DebugInfo/MIR/X86/live-debug-values.mir260
1 files changed, 260 insertions, 0 deletions
diff --git a/test/DebugInfo/MIR/X86/live-debug-values.mir b/test/DebugInfo/MIR/X86/live-debug-values.mir
new file mode 100644
index 000000000000..0af408a635f6
--- /dev/null
+++ b/test/DebugInfo/MIR/X86/live-debug-values.mir
@@ -0,0 +1,260 @@
+# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o /dev/null %s | FileCheck %s
+
+# Test the extension of debug ranges from predecessors.
+# Generated from the source file LiveDebugValues.c:
+# #include <stdio.h>
+# int m;
+# extern int inc(int n);
+# extern int change(int n);
+# extern int modify(int n);
+# int main(int argc, char **argv) {
+# int n;
+# if (argc != 2)
+# n = 2;
+# else
+# n = atoi(argv[1]);
+# n = change(n);
+# if (n > 10) {
+# m = modify(n);
+# m = m + n; // var `m' doesn't has a dbg.value
+# }
+# else
+# m = inc(n); // var `m' doesn't has a dbg.value
+# printf("m(main): %d\n", m);
+# return 0;
+# }
+# with clang -g -O3 -c -emit-llvm LiveDebugValues.c -S -o live-debug-values.ll
+# then llc -stop-after stackmap-liveness live-debug-values.ll -o /dev/null > live-debug-values.mir
+# This case will also produce multiple locations but only the debug range
+# extension is tested here. This test case is tested with DWARF information under
+# llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
+# MIR->MIR serialization.
+
+# DBG_VALUE for variable "n" is extended into BB#5 from its predecessors BB#3
+# and BB#4.
+# CHECK: bb.5.if.end.7:
+# CHECK: DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
+# CHECK-NEXT: DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
+
+
+--- |
+ ; ModuleID = 'live-debug-values.ll'
+ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+
+ @m = common global i32 0, align 4
+ @.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
+
+ ; Function Attrs: nounwind uwtable
+ define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 {
+ entry:
+ tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21
+ tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22
+ %cmp = icmp eq i32 %argc, 2, !dbg !24
+ br i1 %cmp, label %if.else, label %if.end, !dbg !26
+
+ if.else: ; preds = %entry
+ %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
+ %0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
+ %call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32
+ tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33
+ br label %if.end
+
+ if.end: ; preds = %if.else, %entry
+ %n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
+ %call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34
+ tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33
+ %cmp2 = icmp sgt i32 %call1, 10, !dbg !35
+ br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
+
+ if.then.3: ; preds = %if.end
+ %call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38
+ %add = add nsw i32 %call4, %call1, !dbg !40
+ br label %if.end.7, !dbg !41
+
+ if.else.5: ; preds = %if.end
+ %call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42
+ br label %if.end.7
+
+ if.end.7: ; preds = %if.else.5, %if.then.3
+ %storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
+ store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
+ %call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46
+ ret i32 0, !dbg !47
+ }
+
+ declare i32 @atoi(...) #1
+
+ declare i32 @change(i32) #1
+
+ declare i32 @modify(i32) #1
+
+ declare i32 @inc(i32) #1
+
+ ; Function Attrs: nounwind
+ declare i32 @printf(i8* nocapture readonly, ...) #2
+
+ ; Function Attrs: nounwind readnone
+ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
+
+ attributes #0 = { nounwind uwtable }
+ attributes #1 = { nounwind }
+ attributes #2 = { nounwind }
+ attributes #3 = { nounwind readnone }
+ attributes #4 = { nounwind }
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!17, !18}
+ !llvm.ident = !{!19}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !15)
+ !1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
+ !2 = !{}
+ !3 = !{!4}
+ !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, variables: !11)
+ !5 = !DISubroutineType(types: !6)
+ !6 = !{!7, !7, !8}
+ !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+ !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
+ !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
+ !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+ !11 = !{!12, !13, !14}
+ !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
+ !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
+ !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
+ !15 = !{!16}
+ !16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, variable: i32* @m)
+ !17 = !{i32 2, !"Dwarf Version", i32 4}
+ !18 = !{i32 2, !"Debug Info Version", i32 3}
+ !19 = !{!"clang version 3.8.0 (trunk 253049)"}
+ !20 = !DIExpression()
+ !21 = !DILocation(line: 6, column: 14, scope: !4)
+ !22 = !DILocation(line: 6, column: 27, scope: !23)
+ !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
+ !24 = !DILocation(line: 8, column: 12, scope: !25)
+ !25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7)
+ !26 = !DILocation(line: 8, column: 7, scope: !4)
+ !27 = !DILocation(line: 11, column: 14, scope: !25)
+ !28 = !{!29, !29, i64 0}
+ !29 = !{!"any pointer", !30, i64 0}
+ !30 = !{!"omnipotent char", !31, i64 0}
+ !31 = !{!"Simple C/C++ TBAA"}
+ !32 = !DILocation(line: 11, column: 9, scope: !25)
+ !33 = !DILocation(line: 7, column: 7, scope: !23)
+ !34 = !DILocation(line: 12, column: 7, scope: !4)
+ !35 = !DILocation(line: 13, column: 9, scope: !36)
+ !36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7)
+ !37 = !DILocation(line: 13, column: 7, scope: !4)
+ !38 = !DILocation(line: 14, column: 9, scope: !39)
+ !39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15)
+ !40 = !DILocation(line: 15, column: 11, scope: !39)
+ !41 = !DILocation(line: 16, column: 3, scope: !39)
+ !42 = !DILocation(line: 18, column: 9, scope: !36)
+ !43 = !DILocation(line: 15, column: 7, scope: !39)
+ !44 = !{!45, !45, i64 0}
+ !45 = !{!"int", !30, i64 0}
+ !46 = !DILocation(line: 19, column: 3, scope: !4)
+ !47 = !DILocation(line: 20, column: 3, scope: !4)
+
+...
+---
+name: main
+alignment: 4
+exposesReturnsTwice: false
+hasInlineAsm: false
+isSSA: false
+tracksRegLiveness: true
+tracksSubRegLiveness: false
+liveins:
+ - { reg: '%edi' }
+ - { reg: '%rsi' }
+calleeSavedRegisters: [ '%bh', '%bl', '%bp', '%bpl', '%bx', '%ebp', '%ebx',
+ '%rbp', '%rbx', '%r12', '%r13', '%r14', '%r15',
+ '%r12b', '%r13b', '%r14b', '%r15b', '%r12d', '%r13d',
+ '%r14d', '%r15d', '%r12w', '%r13w', '%r14w', '%r15w' ]
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 8
+ offsetAdjustment: 0
+ maxAlignment: 0
+ adjustsStack: true
+ hasCalls: true
+ maxCallFrameSize: 0
+ hasOpaqueSPAdjustment: false
+ hasVAStart: false
+ hasMustTailInVarArgFunc: false
+fixedStack:
+ - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%rbx' }
+body: |
+ bb.0.entry:
+ successors: %bb.1.if.else(16), %bb.2.if.end(16)
+ liveins: %edi, %rsi, %rbx
+
+ frame-setup PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp
+ CFI_INSTRUCTION .cfi_def_cfa_offset 16
+ CFI_INSTRUCTION .cfi_offset %rbx, -16
+ DBG_VALUE debug-use %edi, debug-use _, !12, !20, debug-location !21
+ DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
+ %eax = MOV32rr %edi
+ DBG_VALUE debug-use %eax, debug-use _, !12, !20, debug-location !21
+ %edi = MOV32ri 2
+ CMP32ri8 killed %eax, 2, implicit-def %eflags, debug-location !26
+ JNE_1 %bb.2.if.end, implicit %eflags
+
+ bb.1.if.else:
+ successors: %bb.2.if.end(0)
+ liveins: %rsi
+
+ DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
+ %rdi = MOV64rm killed %rsi, 1, _, 8, _, debug-location !27 :: (load 8 from %ir.arrayidx, !tbaa !28)
+ dead %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, implicit-def %al, debug-location !32
+ CALL64pcrel32 @atoi, csr_64, implicit %rsp, implicit %rdi, implicit %al, implicit-def %rsp, implicit-def %eax, debug-location !32
+ %edi = MOV32rr %eax, debug-location !32
+ DBG_VALUE debug-use %edi, debug-use _, !14, !20, debug-location !33
+
+ bb.2.if.end:
+ successors: %bb.3.if.then.3(16), %bb.4.if.else.5(16)
+ liveins: %edi
+
+ CALL64pcrel32 @change, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !34
+ %ebx = MOV32rr %eax, debug-location !34
+ DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
+ CMP32ri8 %ebx, 11, implicit-def %eflags, debug-location !37
+ JL_1 %bb.4.if.else.5, implicit killed %eflags, debug-location !37
+
+ bb.3.if.then.3:
+ successors: %bb.5.if.end.7(0)
+ liveins: %ebx
+
+ DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
+ %edi = MOV32rr %ebx, debug-location !38
+ CALL64pcrel32 @modify, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !38
+ %ecx = MOV32rr %eax, debug-location !38
+ %ecx = ADD32rr killed %ecx, killed %ebx, implicit-def dead %eflags, debug-location !40
+ JMP_1 %bb.5.if.end.7
+
+ bb.4.if.else.5:
+ successors: %bb.5.if.end.7(0)
+ liveins: %ebx
+
+ DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
+ %edi = MOV32rr killed %ebx, debug-location !42
+ CALL64pcrel32 @inc, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !42
+ %ecx = MOV32rr %eax, debug-location !42
+
+ bb.5.if.end.7:
+ liveins: %ecx
+
+ MOV32mr %rip, 1, _, @m, _, %ecx, debug-location !43 :: (store 4 into @m, !tbaa !44)
+ dead undef %edi = MOV32ri64 @.str, implicit-def %rdi, debug-location !46
+ dead %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, implicit-def %al, debug-location !47
+ %esi = MOV32rr killed %ecx, debug-location !46
+ CALL64pcrel32 @printf, csr_64, implicit %rsp, implicit %rdi, implicit %esi, implicit %al, implicit-def %rsp, implicit-def dead %eax, debug-location !46
+ %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, debug-location !47
+ %rbx = POP64r implicit-def %rsp, implicit %rsp, debug-location !47
+ RETQ %eax, debug-location !47
+
+...
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 19:34:33 +0000