Index: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -2785,7 +2785,7 @@
   MCSection *InstMap = nullptr;
   MCSection *FnSledIndex = nullptr;
   if (MF->getSubtarget().getTargetTriple().isOSBinFormatELF()) {
-    auto Associated = dyn_cast<MCSymbolELF>(PrevSection->getBeginSymbol());
+    auto Associated = dyn_cast<MCSymbolELF>(CurrentFnSym);
     assert(Associated != nullptr);
     auto Flags = ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_LINK_ORDER;
     std::string GroupName;
Index: llvm/trunk/test/CodeGen/Mips/xray-section-group.ll
===================================================================
--- llvm/trunk/test/CodeGen/Mips/xray-section-group.ll
+++ llvm/trunk/test/CodeGen/Mips/xray-section-group.ll
@@ -14,7 +14,7 @@
 define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always" {
 ; CHECK: .section .text.foo,"ax",@progbits
   ret i32 0
-; CHECK: .section xray_instr_map,"awo",@progbits,.text.foo,unique,1
+; CHECK: .section xray_instr_map,"awo",@progbits,foo,unique,1
 }
 
 ; CHECK-OBJ: Section {
@@ -24,7 +24,7 @@
 define i32 @bar() nounwind noinline uwtable "function-instrument"="xray-always" comdat($bar) {
 ; CHECK: .section .text.bar,"axG",@progbits,bar,comdat
   ret i32 1
-; CHECK: .section xray_instr_map,"aGwo",@progbits,bar,comdat,.text.bar,unique,2
+; CHECK: .section xray_instr_map,"aGwo",@progbits,bar,comdat,bar,unique,2
 }
 
 ; CHECK-OBJ: Section {
Index: llvm/trunk/test/CodeGen/PowerPC/xray-attribute-instrumentation.ll
===================================================================
--- llvm/trunk/test/CodeGen/PowerPC/xray-attribute-instrumentation.ll
+++ llvm/trunk/test/CodeGen/PowerPC/xray-attribute-instrumentation.ll
@@ -22,7 +22,7 @@
 ; CHECK-NEXT:         nop
 ; CHECK-NEXT:         mtlr 0
 }
-; CHECK-LABEL: xray_instr_map,"awo",@progbits,.text,unique,1
+; CHECK-LABEL: xray_instr_map,"awo",@progbits,foo,unique,1
 ; CHECK:      .Lxray_sleds_start0:
 ; CHECK-NEXT:         .quad   .Ltmp0
 ; CHECK-NEXT:         .quad   foo
@@ -37,7 +37,7 @@
 ; CHECK-NEXT:         .byte   0x00
 ; CHECK-NEXT:         .space  13
 ; CHECK-NEXT: .Lxray_sleds_end0:
-; CHECK-LABEL: xray_fn_idx,"awo",@progbits,.text,unique,1
+; CHECK-LABEL: xray_fn_idx,"awo",@progbits,foo,unique,1
 ; CHECK:              .p2align        4
 ; CHECK-NEXT:         .quad   .Lxray_sleds_start0
 ; CHECK-NEXT:         .quad   .Lxray_sleds_end0
Index: llvm/trunk/test/CodeGen/X86/xray-section-group.ll
===================================================================
--- llvm/trunk/test/CodeGen/X86/xray-section-group.ll
+++ llvm/trunk/test/CodeGen/X86/xray-section-group.ll
@@ -5,14 +5,14 @@
 define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always" {
 ; CHECK: .section .text.foo,"ax",@progbits
   ret i32 0
-; CHECK: .section xray_instr_map,"awo",@progbits,.text.foo,unique,1
+; CHECK: .section xray_instr_map,"awo",@progbits,foo,unique,1
 }
 
 $bar = comdat any
 define i32 @bar() nounwind noinline uwtable "function-instrument"="xray-always" comdat($bar) {
 ; CHECK: .section .text.bar,"axG",@progbits,bar,comdat
   ret i32 1
-; CHECK: .section xray_instr_map,"aGwo",@progbits,bar,comdat,.text.bar,unique,2
+; CHECK: .section xray_instr_map,"aGwo",@progbits,bar,comdat,bar,unique,2
 }
 
 ; CHECK-OBJ:      section xray_instr_map:
Index: llvm/trunk/test/DebugInfo/X86/xray-split-dwarf-interaction.ll
===================================================================
--- llvm/trunk/test/DebugInfo/X86/xray-split-dwarf-interaction.ll
+++ llvm/trunk/test/DebugInfo/X86/xray-split-dwarf-interaction.ll
@@ -0,0 +1,84 @@
+; RUN: %llc_dwarf -split-dwarf-file=input.dwo -O3 \
+; RUN:     -function-sections -data-sections \
+; RUN:     -relocation-model=pic -filetype=asm \
+; RUN:     -generate-type-units -debug-compile -o - %s | \
+; RUN:     FileCheck %s --check-prefix=CHECK-ASM
+; RUN: %llc_dwarf -split-dwarf-file=input.dwo -O3 \
+; RUN:     -function-sections -data-sections \
+; RUN:     -relocation-model=pic -filetype=obj \
+; RUN:     -generate-type-units -debug-compile -o - %s | \
+; RUN:     llvm-readelf -sections | \
+; RUN:     FileCheck %s --check-prefix=CHECK-ELF
+; Created from `clang++ -fxray-instrument -gsplit-dwarf -fdebug-types-section
+; -ffunction-sections -fdata-sections -emit-llvm -S input.cc`:
+; input.cc:
+;
+; class a {
+;   int b();
+; };
+; int a::b() {
+;   for (;;)
+;     ;
+; }
+;
+; In this test we want to make sure that the xray_instr_map section for
+; `a::b()` is actually associated with the function's symbol instead of the
+; .debug_types.dwo section.
+;
+; CHECK-ASM: xray_fn_idx,"awo",@progbits,_ZN1a1bEv,unique,1
+;
+; CHECK-ELF-DAG: [[FSECT:[0-9]+]]] .text._ZN1a1bEv PROGBITS
+; CHECK-ELF-DAG: [{{.*}}] .debug_types.dwo PROGBITS
+; CHECK-ELF-DAG: [{{.*}}] xray_instr_map PROGBITS {{.*}} {{.*}} {{.*}} {{.*}} WAL [[FSECT]]
+target triple = "x86_64-pc-linux"
+
+%class.a = type { i8 }
+
+; Function Attrs: nounwind readnone uwtable
+define i32 @_ZN1a1bEv(%class.a* nocapture readnone) local_unnamed_addr #0 align 2 !dbg !8 {
+  tail call void @llvm.dbg.value(metadata %class.a* %0, metadata !17, metadata !DIExpression()), !dbg !19
+  br label %2, !dbg !20
+
+; <label>:2:                                      ; preds = %2, %1
+  br label %2, !dbg !21, !llvm.loop !25
+}
+
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.value(metadata, metadata, metadata) #1
+
+attributes #0 = { nounwind readnone uwtable "xray-instruction-threshold"="200" }
+attributes #1 = { nounwind readnone speculatable }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5, !6}
+!llvm.ident = !{!7}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version trunk (trunk r312634)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, debugInfoForProfiling: true)
+!1 = !DIFile(filename: "input.cc", directory: "/usr/local/google/home/dberris/tmp")
+!2 = !{}
+!3 = !{i32 2, !"Debug Info Version", i32 3}
+!4 = !{i32 1, !"wchar_size", i32 4}
+!5 = !{i32 7, !"PIC Level", i32 2}
+!6 = !{i32 7, !"PIE Level", i32 2}
+!7 = !{!"clang version trunk (trunk r312634)"}
+!8 = distinct !DISubprogram(name: "b", linkageName: "_ZN1a1bEv", scope: !9, file: !1, line: 4, type: !12, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !11, variables: !16)
+!9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !1, line: 1, size: 8, elements: !10, identifier: "_ZTS1a")
+!10 = !{!11}
+!11 = !DISubprogram(name: "b", linkageName: "_ZN1a1bEv", scope: !9, file: !1, line: 2, type: !12, isLocal: false, isDefinition: false, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true)
+!12 = !DISubroutineType(types: !13)
+!13 = !{!14, !15}
+!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!16 = !{!17}
+!17 = !DILocalVariable(name: "this", arg: 1, scope: !8, type: !18, flags: DIFlagArtificial | DIFlagObjectPointer)
+!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
+!19 = !DILocation(line: 0, scope: !8)
+!20 = !DILocation(line: 5, column: 3, scope: !8)
+!21 = !DILocation(line: 5, column: 3, scope: !22)
+!22 = !DILexicalBlockFile(scope: !23, file: !1, discriminator: 2)
+!23 = distinct !DILexicalBlock(scope: !24, file: !1, line: 5, column: 3)
+!24 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 3)
+!25 = distinct !{!25, !26, !27}
+!26 = !DILocation(line: 5, column: 3, scope: !24)
+!27 = !DILocation(line: 6, column: 5, scope: !24)