Index: ELF/Config.h
===================================================================
--- ELF/Config.h
+++ ELF/Config.h
@@ -139,6 +139,7 @@
   bool OptRemarksWithHotness;
   bool Pie;
   bool PrintGcSections;
+  bool PrintIcf;
   bool Relocatable;
   bool SaveTemps;
   bool SingleRoRx;
Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -643,6 +643,8 @@
   Config->OrphanHandling = getOrphanHandling(Args);
   Config->OutputFile = Args.getLastArgValue(OPT_o);
   Config->Pie = Args.hasFlag(OPT_pie, OPT_nopie, false);
+  Config->PrintIcf =
+      Args.hasFlag(OPT_print_icf, OPT_no_print_icf, false);
   Config->PrintGcSections =
       Args.hasFlag(OPT_print_gc_sections, OPT_no_print_gc_sections, false);
   Config->Rpath = getRpath(Args);
Index: ELF/ICF.cpp
===================================================================
--- ELF/ICF.cpp
+++ ELF/ICF.cpp
@@ -391,6 +391,13 @@
   ++Cnt;
 }
 
+static void print(const Twine &S) {
+  if (Config->PrintIcf)
+    message(S);
+  else
+    log(S);
+}
+
 // The main function of ICF.
 template <class ELFT> void ICF<ELFT>::run() {
   // Collect sections to merge.
@@ -429,9 +436,21 @@
     if (End - Begin == 1)
       return;
 
-    log("selected " + Sections[Begin]->Name);
+    std::string SectionMessage = "selected section '" +
+                                 Sections[Begin]->Name.str() + "' from file '" +
+                                 Sections[Begin]->File->getName().str() + "'";
+    print(SectionMessage);
+
     for (size_t I = Begin + 1; I < End; ++I) {
-      log("  removed " + Sections[I]->Name);
+      std::string Filename;
+      if (Sections[I]->File)
+        Filename = Sections[I]->File->getName();
+      else
+        Filename = "<internal>";
+      SectionMessage = "  removing identical section '" +
+                       Sections[I]->Name.str() + "' from file '" + Filename +
+                       "'";
+      print(SectionMessage);
       Sections[Begin]->replace(Sections[I]);
     }
   });
Index: ELF/Options.td
===================================================================
--- ELF/Options.td
+++ ELF/Options.td
@@ -222,6 +222,9 @@
 def no_print_gc_sections: F<"no-print-gc-sections">,
   HelpText<"Do not list removed unused sections">;
 
+def no_print_icf: F<"no-print-icf">,
+  HelpText<"Do not list identical folded sections">;
+
 def no_rosegment: F<"no-rosegment">,
   HelpText<"Do not put read-only non-executable sections in their own segment">;
 
@@ -251,6 +254,9 @@
 def print_gc_sections: F<"print-gc-sections">,
   HelpText<"List removed unused sections">;
 
+def print_icf: F<"print-icf">,
+  HelpText<"List identical folded sections">;
+
 def print_map: F<"print-map">,
   HelpText<"Print a link map to the standard output">;
 
Index: test/ELF/Inputs/print-icf.s
===================================================================
--- test/ELF/Inputs/print-icf.s
+++ test/ELF/Inputs/print-icf.s
@@ -0,0 +1,9 @@
+.section .text.f6, "ax"
+f6:
+  mov $60, %rax
+  mov $42, %rdi
+  syscall
+
+  .section .text.f7, "ax"
+f7:
+  mov $0, %rax
Index: test/ELF/icf-absolute.s
===================================================================
--- test/ELF/icf-absolute.s
+++ test/ELF/icf-absolute.s
@@ -4,8 +4,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %S/Inputs/icf-absolute.s -o %t2
 # RUN: ld.lld %t %t2 -o %t3 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file
+# CHECK:   removing identical section '.text.f2' from file
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf-comdat.s
===================================================================
--- test/ELF/icf-comdat.s
+++ test/ELF/icf-comdat.s
@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file [[T:'.*']]
+# CHECK:   removing identical section '.text.f2' from file [[T]]
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf-i386.s
===================================================================
--- test/ELF/icf-i386.s
+++ test/ELF/icf-i386.s
@@ -4,9 +4,9 @@
 # RUN: llvm-mc -filetype=obj -triple=i386-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK:     selected .text.f1
-# CHECK:       removed .text.f2
-# CHECK-NOT:   removed .text.f3
+# CHECK:     selected section '.text.f1' from file [[T:'.*']]
+# CHECK:       removing identical section '.text.f2' from file [[T]]
+# CHECK-NOT:   removing identical section '.text.f3' from file [[T]]
 
 .globl _start, f1, f2, f3
 _start:
Index: test/ELF/icf-merge-sec.s
===================================================================
--- test/ELF/icf-merge-sec.s
+++ test/ELF/icf-merge-sec.s
@@ -4,8 +4,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %S/Inputs/icf-merge-sec.s -o %t2
 # RUN: ld.lld %t %t2 -o %t3 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file
+# CHECK:   removing identical section '.text.f2' from file
 
 .section .rodata.str,"aMS",@progbits,1
 .asciz "foo"
Index: test/ELF/icf-merge.s
===================================================================
--- test/ELF/icf-merge.s
+++ test/ELF/icf-merge.s
@@ -10,10 +10,10 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %S/Inputs/icf-merge3.s -o %t3
 # RUN: ld.lld %t %t3 -o %t3.out --icf=all --verbose 2>&1 | FileCheck --check-prefix=NOMERGE %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file
+# CHECK:   removing identical section '.text.f2' from file
 
-# NOMERGE-NOT: selected .text.f
+# NOMERGE-NOT: selected section '.text.f
 
 .section .rodata.str,"aMS",@progbits,1
 foo:
Index: test/ELF/icf-non-mergeable.s
===================================================================
--- test/ELF/icf-non-mergeable.s
+++ test/ELF/icf-non-mergeable.s
@@ -10,8 +10,8 @@
 
 // RUN: ld.lld %t1 %t2 -o %t3 --icf=all --verbose 2>&1 | FileCheck %s
 
-// CHECK-NOT: selected .text.f1
-// CHECK-NOT:   removed .text.f2
+// CHECK-NOT: selected section '.text.f1'
+// CHECK-NOT:   removing identical section '.text.f2'
 
 .globl _start, f1, f2, d1, d2
 _start:
Index: test/ELF/icf-none.s
===================================================================
--- test/ELF/icf-none.s
+++ test/ELF/icf-none.s
@@ -3,7 +3,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --icf=none --verbose 2>&1 | FileCheck %s
 
-# CHECK-NOT: selected .text.f1
+# CHECK-NOT: selected section '.text.f1'
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf1.s
===================================================================
--- test/ELF/icf1.s
+++ test/ELF/icf1.s
@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file [[T:'.*']]
+# CHECK:   removing identical section '.text.f2' from file [[T]]
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf2.s
===================================================================
--- test/ELF/icf2.s
+++ test/ELF/icf2.s
@@ -4,8 +4,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/icf2.s -o %t2
 # RUN: ld.lld %t1 %t2 -o %t --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file
+# CHECK:   removing identical section '.text.f2' from file
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf3.s
===================================================================
--- test/ELF/icf3.s
+++ test/ELF/icf3.s
@@ -4,8 +4,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/icf2.s -o %t2
 # RUN: ld.lld %t1 %t2 -o %t --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK-NOT: Selected .text.f1
-# CHECK-NOT: Selected .text.f2
+# CHECK-NOT: selected section '.text.f1' from file
+# CHECK-NOT: selected section '.text.f2' from file
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf4.s
===================================================================
--- test/ELF/icf4.s
+++ test/ELF/icf4.s
@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK-NOT: Selected .text.f1
-# CHECK-NOT: Selected .text.f2
+# CHECK-NOT: selected section '.text.f1'
+# CHECK-NOT: selected section '.text.f2'
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf5.s
===================================================================
--- test/ELF/icf5.s
+++ test/ELF/icf5.s
@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK-NOT: Selected .text.f1
-# CHECK-NOT: Selected .text.f2
+# CHECK-NOT: selected section '.text.f1'
+# CHECK-NOT: selected section '.text.f2'
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf6.s
===================================================================
--- test/ELF/icf6.s
+++ test/ELF/icf6.s
@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 
-# CHECK-NOT: Selected .text.f1
-# CHECK-NOT: Selected .text.f2
+# CHECK-NOT: selected section '.text.f1'
+# CHECK-NOT: selected section '.text.f2'
 
 .globl _start, f1, f2
 _start:
Index: test/ELF/icf7.s
===================================================================
--- test/ELF/icf7.s
+++ test/ELF/icf7.s
@@ -4,8 +4,8 @@
 # RUN: ld.lld %t -o %t2 --icf=all --verbose 2>&1 | FileCheck %s
 # RUN: llvm-objdump -t %t2 | FileCheck -check-prefix=ALIGN %s
 
-# CHECK: selected .text.f1
-# CHECK:   removed .text.f2
+# CHECK: selected section '.text.f1' from file [[T:'.*']]
+# CHECK:   removing identical section '.text.f2' from file [[T]]
 
 # ALIGN: 0000000000201000 .text 00000000 _start
 # ALIGN: 0000000000201100 .text 00000000 f1
Index: test/ELF/icf9.s
===================================================================
--- test/ELF/icf9.s
+++ test/ELF/icf9.s
@@ -7,15 +7,15 @@
 
 # SEC:  .rodata      PROGBITS  0000000000200120 000120 000002 00 A 0 0 1
 
-# CHECK-NOT: selected .rodata.d1
-# CHECK-NOT: selected .rodata.d2
+# CHECK-NOT: selected section '.rodata.d1'
+# CHECK-NOT: selected section '.rodata.d2'
 
 # We do merge rodata if passed --icf-data
 # RUN: ld.lld %t -o %t2 --icf=all --verbose --ignore-data-address-equality 2>&1 | FileCheck --check-prefix=DATA %s
 # RUN: llvm-readelf -S -W %t2 | FileCheck --check-prefix=DATA-SEC %s
 
-# DATA: selected .rodata.d1
-# DATA: removed .rodata.d2
+# DATA: selected section '.rodata.d1' from file [[T:'.*']]
+# DATA:   removing identical section '.rodata.d2' from file [[T]]
 
 # DATA-SEC:  .rodata      PROGBITS  0000000000200120 000120 000001 00 A 0 0 1
 
Index: test/ELF/print-icf.s
===================================================================
--- test/ELF/print-icf.s
+++ test/ELF/print-icf.s
@@ -0,0 +1,45 @@
+# REQUIRES: x86
+
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/inputs/print-icf.s -o %t1
+# RUN: ld.lld %t %t1 -o %t2 --icf=all --print-icf | FileCheck %s
+# RUN: ld.lld %t %t1 -o %t2 --icf=all --no-print-icf --print-icf | FileCheck %s
+# RUN: ld.lld %t %t1 -o %t2 --icf=all --print-icf --no-print-icf | not FileCheck %s
+
+# CHECK: selected section '.text.f2' from file [[T:'.*']]
+# CHECK:   removing identical section '.text.f4' from file [[T]]
+# CHECK:   removing identical section '.text.f7' from file [[T1:'.*']]
+# CHECK: selected section '.text.f1' from file [[T]]
+# CHECK:   removing identical section '.text.f3' from file [[T]]
+# CHECK:   removing identical section '.text.f5' from file [[T]]
+# CHECK:   removing identical section '.text.f6' from file [[T1]]
+
+.globl _start, f1, f2
+_start:
+  ret
+
+.section .text.f1, "ax"
+f1:
+  mov $60, %rax
+  mov $42, %rdi
+  syscall
+
+  .section .text.f2, "ax"
+f2:
+  mov $0, %rax
+
+.section .text.f3, "ax"
+f3:
+  mov $60, %rax
+  mov $42, %rdi
+  syscall
+
+.section .text.f4, "ax"
+f4:
+  mov $0, %rax
+
+.section .text.f5, "ax"
+f5:
+  mov $60, %rax
+  mov $42, %rdi
+  syscall