--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lld/test/COFF/gfids-icf.s	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,98 @@
+# REQUIRES: x86
+# RUN: llvm-mc -triple x86_64-windows-msvc %s -filetype=obj -o %t.obj
+# RUN: lld-link %t.obj -guard:nolongjmp -out:%t.exe -opt:icf -entry:main
+# RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK
+
+# This assembly is meant to mimic what CL emits for this kind of C code:
+# int icf1() { return 42; }
+# int icf2() { return 42; }
+# int (*fp1)() = &icf1;
+# int (*fp2)() = &icf2;
+# int main() {
+#   return fp1();
+#   return fp2();
+# }
+
+# 'icf1' and 'icf2' are address taken, but should be merged into one entry.
+# There are two entries in the table because 'main' is included.
+
+# CHECK: ImageBase: 0x140000000
+# CHECK: LoadConfig [
+# CHECK:   SEHandlerTable: 0x0
+# CHECK:   SEHandlerCount: 0
+# CHECK:   GuardCFCheckFunction: 0x0
+# CHECK:   GuardCFCheckDispatch: 0x0
+# CHECK:   GuardCFFunctionTable: 0x14000{{.*}}
+# CHECK:   GuardCFFunctionCount: 2
+# CHECK:   GuardFlags: 0x500
+# CHECK:   GuardAddressTakenIatEntryTable: 0x0
+# CHECK:   GuardAddressTakenIatEntryCount: 0
+# CHECK:   GuardLongJumpTargetTable: 0x0
+# CHECK:   GuardLongJumpTargetCount: 0
+# CHECK: ]
+# CHECK:      GuardFidTable [
+# CHECK-NEXT:   0x14000{{.*}}
+# CHECK-NEXT:   0x14000{{.*}}
+# CHECK-NEXT: ]
+
+# There should be no .gfids section in the output exectuable when we link with
+# -guard:cf or with no -guard:cf/nolongjmp flag.
+# RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
+# RUN: lld-link %t.obj -out:%t.exe -opt:icf -entry:main
+# RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
+
+# NOGFIDSEC: Sections [
+# NOGFIDSEC: Section {
+# NOGFIDSEC: Name: .text
+# NOGFIDSEC-NOT: Name: .gfids
+
+# Indicate that gfids are present.
+        .def     @feat.00; .scl    3; .type   0; .endef
+        .globl  @feat.00
+@feat.00 = 0x800
+
+        .def     icf1; .scl    2; .type   32; .endef
+        .section        .text,"xr",one_only,icf1
+        .global icf1
+icf1:
+        movl $42, %eax
+        retq
+
+        .def     icf2; .scl    2; .type   32; .endef
+        .section        .text,"xr",one_only,icf2
+        .global icf2
+icf2:
+        movl $42, %eax
+        retq
+
+# Take their two addresses.
+        .data
+        .globl  fp1
+fp1:
+        .quad   icf1
+        .globl  fp2
+fp2:
+        .quad   icf2
+
+        .section        .gfids$y,"dr"
+        .symidx icf1
+        .symidx icf2
+
+        .def     main; .scl    2; .type   32; .endef
+        .section        .text,"xr",one_only,main
+        .globl  main
+main:
+        callq      *fp1(%rip)
+        callq      *fp2(%rip)
+        xor %eax, %eax
+        retq
+
+        .section .rdata,"dr"
+.globl _load_config_used
+_load_config_used:
+        .long 256
+        .fill 124, 1, 0
+        .quad __guard_fids_table
+        .quad __guard_fids_count
+        .long __guard_flags
+        .fill 128, 1, 0