diff --git a/llvm/lib/MC/XCOFFObjectWriter.cpp b/llvm/lib/MC/XCOFFObjectWriter.cpp
--- a/llvm/lib/MC/XCOFFObjectWriter.cpp
+++ b/llvm/lib/MC/XCOFFObjectWriter.cpp
@@ -495,6 +495,8 @@
   }
 
   // The first symbol entry is for the source file's name.
+  if (!Asm.getFileNames().empty())
+    SourceFileName = Asm.getFileNames().front().first;
   if (nameShouldBeInStringTable(SourceFileName))
     Strings.add(SourceFileName);
 
diff --git a/llvm/test/CodeGen/PowerPC/aix-extern-weak.ll b/llvm/test/CodeGen/PowerPC/aix-extern-weak.ll
--- a/llvm/test/CodeGen/PowerPC/aix-extern-weak.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-extern-weak.ll
@@ -66,7 +66,7 @@
 ; CHECKSYM:      Symbols [
 ; CHECKSYM-NEXT:   Symbol {
 ; CHECKSYM-NEXT:     Index: 0
-; CHECKSYM-NEXT:     Name: .file
+; CHECKSYM-NEXT:     Name: <stdin>
 ; CHECKSYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; CHECKSYM-NEXT:     Section: N_DEBUG
 ; CHECKSYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-extern.ll b/llvm/test/CodeGen/PowerPC/aix-extern.ll
--- a/llvm/test/CodeGen/PowerPC/aix-extern.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-extern.ll
@@ -89,7 +89,7 @@
 ; CHECKSYM:       Symbols [
 ; CHECKSYM-NEXT:   Symbol {
 ; CHECKSYM-NEXT:     Index: 0
-; CHECKSYM-NEXT:     Name: .file
+; CHECKSYM-NEXT:     Name: <stdin>
 ; CHECKSYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; CHECKSYM-NEXT:     Section: N_DEBUG
 ; CHECKSYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-func-dsc-gen.ll b/llvm/test/CodeGen/PowerPC/aix-func-dsc-gen.ll
--- a/llvm/test/CodeGen/PowerPC/aix-func-dsc-gen.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-func-dsc-gen.ll
@@ -13,7 +13,7 @@
 ; CHECK-NEXT: AddressSize: 32bit
 ; CHECK:        Symbol {
 ; CHECK-NEXT:     Index: 0
-; CHECK-NEXT:     Name: .file
+; CHECK-NEXT:     Name: <stdin>
 ; CHECK-NEXT:     Value (SymbolTableIndex): 0x0
 ; CHECK-NEXT:     Section: N_DEBUG
 ; CHECK-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-llvm-intrinsic.ll b/llvm/test/CodeGen/PowerPC/aix-llvm-intrinsic.ll
--- a/llvm/test/CodeGen/PowerPC/aix-llvm-intrinsic.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-llvm-intrinsic.ll
@@ -39,7 +39,7 @@
 
 ; CHECKSYM:        Symbol {
 ; CHECKSYM-NEXT:     Index: 0
-; CHECKSYM-NEXT:     Name: .file
+; CHECKSYM-NEXT:     Name: <stdin>
 ; CHECKSYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; CHECKSYM-NEXT:     Section: N_DEBUG
 ; CHECKSYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc-large.ll b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc-large.ll
--- a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc-large.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc-large.ll
@@ -210,7 +210,7 @@
 ; SYM-NEXT: Symbols [
 ; SYM-NEXT:   Symbol {
 ; SYM-NEXT:     Index: 0
-; SYM-NEXT:     Name: .file
+; SYM-NEXT:     Name: <stdin>
 ; SYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; SYM-NEXT:     Section: N_DEBUG
 ; SYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc.ll b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc.ll
--- a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-reloc.ll
@@ -171,7 +171,7 @@
 ; SYM-NEXT: Symbols [
 ; SYM-NEXT:   Symbol {
 ; SYM-NEXT:     Index: 0
-; SYM-NEXT:     Name: .file
+; SYM-NEXT:     Name: <stdin>
 ; SYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; SYM-NEXT:     Section: N_DEBUG
 ; SYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-variables.ll b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-variables.ll
--- a/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-variables.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-tls-xcoff-variables.ll
@@ -66,7 +66,7 @@
 ; SYMS-NEXT: Symbols [
 ; SYMS-NEXT:   Symbol {
 ; SYMS-NEXT:     Index: 0
-; SYMS-NEXT:     Name: .file
+; SYMS-NEXT:     Name: <stdin>
 ; SYMS-NEXT:     Value (SymbolTableIndex): 0x0
 ; SYMS-NEXT:     Section: N_DEBUG
 ; SYMS-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-weak.ll b/llvm/test/CodeGen/PowerPC/aix-weak.ll
--- a/llvm/test/CodeGen/PowerPC/aix-weak.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-weak.ll
@@ -101,7 +101,7 @@
 ; CHECKSYM:      Symbols [
 ; CHECKSYM-NEXT:   Symbol {
 ; CHECKSYM-NEXT:     Index: 0
-; CHECKSYM-NEXT:     Name: .file
+; CHECKSYM-NEXT:     Name: <stdin>
 ; CHECKSYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; CHECKSYM-NEXT:     Section: N_DEBUG
 ; CHECKSYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-xcoff-data.ll b/llvm/test/CodeGen/PowerPC/aix-xcoff-data.ll
--- a/llvm/test/CodeGen/PowerPC/aix-xcoff-data.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-xcoff-data.ll
@@ -208,7 +208,7 @@
 ; SYMS:      Symbols [
 ; SYMS-NEXT:   Symbol {
 ; SYMS-NEXT:     Index: 0
-; SYMS-NEXT:     Name: .file
+; SYMS-NEXT:     Name: <stdin>
 ; SYMS-NEXT:     Value (SymbolTableIndex): 0x0
 ; SYMS-NEXT:     Section: N_DEBUG
 ; SYMS-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/CodeGen/PowerPC/aix-xcoff-reloc.ll b/llvm/test/CodeGen/PowerPC/aix-xcoff-reloc.ll
--- a/llvm/test/CodeGen/PowerPC/aix-xcoff-reloc.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-xcoff-reloc.ll
@@ -159,7 +159,7 @@
 ; SYM:      Symbols [
 ; SYM-NEXT:   Symbol {
 ; SYM-NEXT:     Index: 0
-; SYM-NEXT:     Name: .file
+; SYM-NEXT:     Name: <stdin>
 ; SYM-NEXT:     Value (SymbolTableIndex): 0x0
 ; SYM-NEXT:     Section: N_DEBUG
 ; SYM-NEXT:     Source Language ID: TB_C (0x0)
diff --git a/llvm/test/tools/llvm-objdump/XCOFF/symbol-table.test b/llvm/test/tools/llvm-objdump/XCOFF/symbol-table.test
--- a/llvm/test/tools/llvm-objdump/XCOFF/symbol-table.test
+++ b/llvm/test/tools/llvm-objdump/XCOFF/symbol-table.test
@@ -66,7 +66,7 @@
 }
 
 ; SYM:      SYMBOL TABLE:
-; SYM-NEXT: 00000000      df *DEBUG*    00000000 .file
+; SYM-NEXT: 00000000      df *DEBUG*    00000000 <stdin>
 ; SYM-NEXT: 00000000         *UND*      00000000 ei
 ; SYM-NEXT: 00000000 l       .text      00000091 .text
 ; SYM-NEXT: 00000000 g     F .text (csect: .text)       00000000 .bar
@@ -88,7 +88,7 @@
 ; SYM-NEXT: 000000ec l     O *COM*      00000004 si
 
 ; SYM-DES:      SYMBOL TABLE:
-; SYM-DES-NEXT: 00000000      df *DEBUG*    00000000 (idx: 0) .file
+; SYM-DES-NEXT: 00000000      df *DEBUG*    00000000 (idx: 0) <stdin>
 ; SYM-DES-NEXT: 00000000         *UND*      00000000 (idx: 1) ei[UA]
 ; SYM-DES-NEXT: 00000000 l       .text      00000091 (idx: 3) .text[PR]
 ; SYM-DES-NEXT: 00000000 g     F .text (csect: (idx: 3) .text[PR])  00000000 (idx: 5) .bar