Index: lld/trunk/COFF/Chunks.cpp
===================================================================
--- lld/trunk/COFF/Chunks.cpp
+++ lld/trunk/COFF/Chunks.cpp
@@ -213,6 +213,34 @@
   applyArm64Imm(Off, Imm >> Size, Size);
 }
 
+static void applySecRelAdd(const SectionChunk *Sec, uint8_t *Off,
+                           OutputSection *OS, uint64_t S, int Shift) {
+  if (!OS) {
+    if (Sec->isCodeView())
+      return;
+    fatal("SECREL relocation cannot be applied to absolute symbols");
+  }
+  uint64_t SecRel = S - OS->getRVA();
+  SecRel >>= Shift;
+  if (Shift > 0 && SecRel > 0xfff) {
+    error("overflow in SECREL_HIGH12A relocation in section: " +
+          Sec->getSectionName());
+    return;
+  }
+  applyArm64Imm(Off, SecRel & 0xfff, 0);
+}
+
+static void applySecRelLdr(const SectionChunk *Sec, uint8_t *Off,
+                           OutputSection *OS, uint64_t S) {
+  if (!OS) {
+    if (Sec->isCodeView())
+      return;
+    fatal("SECREL relocation cannot be applied to absolute symbols");
+  }
+  uint64_t SecRel = S - OS->getRVA();
+  applyArm64Ldr(Off, SecRel & 0xfff);
+}
+
 void SectionChunk::applyRelARM64(uint8_t *Off, uint16_t Type, OutputSection *OS,
                                  uint64_t S, uint64_t P) const {
   switch (Type) {
@@ -224,6 +252,9 @@
   case IMAGE_REL_ARM64_ADDR32NB:       add32(Off, S); break;
   case IMAGE_REL_ARM64_ADDR64:         add64(Off, S + Config->ImageBase); break;
   case IMAGE_REL_ARM64_SECREL:         applySecRel(this, Off, OS, S); break;
+  case IMAGE_REL_ARM64_SECREL_LOW12A:  applySecRelAdd(this, Off, OS, S, 0); break;
+  case IMAGE_REL_ARM64_SECREL_HIGH12A: applySecRelAdd(this, Off, OS, S, 12); break;
+  case IMAGE_REL_ARM64_SECREL_LOW12L:  applySecRelLdr(this, Off, OS, S); break;
   default:
     fatal("unsupported relocation type 0x" + Twine::utohexstr(Type));
   }
Index: lld/trunk/test/COFF/arm64-relocs-imports.test
===================================================================
--- lld/trunk/test/COFF/arm64-relocs-imports.test
+++ lld/trunk/test/COFF/arm64-relocs-imports.test
@@ -38,12 +38,15 @@
 # BEFORE:       74:       00 00 00 00     <unknown>
 # BEFORE:       78:       01 00 00 00     <unknown>
 # BEFORE:       7c:       01 00 00 00     <unknown>
+# BEFORE:       80:       00 00 00 91     add     x0, x0, #0
+# BEFORE:       84:       00 00 40 91     add     x0, x0, #0, lsl #12
+# BEFORE:       88:       00 00 40 f9     ldr     x0, [x0]
 
 # AFTER: Disassembly of section .text:
 # AFTER:  140002000:      fe 0f 1f f8     str     x30, [sp, #-16]!
 # AFTER:  140002004:      e0 ff ff f0     adrp    x0, #-4096
 # AFTER:  140002008:      00 18 00 91     add     x0, x0, #6
-# AFTER:  14000200c:      1d 00 00 94     bl      #116
+# AFTER:  14000200c:      20 00 00 94     bl      #128
 # AFTER:  140002010:      00 21 40 39     ldrb    w0, [x8, #8]
 # AFTER:  140002014:      00 11 40 79     ldrh    w0, [x8, #8]
 # AFTER:  140002018:      00 09 40 b9     ldr     w0, [x8, #8]
@@ -72,9 +75,12 @@
 # AFTER:  140002074:      01 00 00 00     <unknown>
 # AFTER:  140002078:      09 10 00 00     <unknown>
 # AFTER:  14000207c:      09 00 00 00     <unknown>
-# AFTER:  140002080:      10 00 00 b0     adrp    x16, #4096
-# AFTER:  140002084:      10 1e 40 f9     ldr     x16, [x16, #56]
-# AFTER:  140002088:      00 02 1f d6     br      x16
+# AFTER:  140002080:      00 20 0e 91     add     x0, x0, #904
+# AFTER:  140002084:      00 04 40 91     add     x0, x0, #1, lsl #12
+# AFTER:  140002088:      00 c4 41 f9     ldr     x0, [x0, #904]
+# AFTER:  14000208c:      10 00 00 b0     adrp    x16, #4096
+# AFTER:  140002090:      10 1e 40 f9     ldr     x16, [x16, #56]
+# AFTER:  140002094:      00 02 1f d6     br      x16
 
 --- !COFF
 header:
@@ -84,7 +90,7 @@
   - Name:            .text
     Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
     Alignment:       4
-    SectionData:     FE0F1FF80000009000080091000000940001403900014079000140B9000140F90001003900010079000100B9000100F90001403D0001407D000140BD000140FD0001C03D0001003D0001007D000100BD000100FD0001803D000540F9201A01B000FC4FF9E0031F2AFE0741F8C0035FD608000000000000000100000001000000
+    SectionData:     FE0F1FF80000009000080091000000940001403900014079000140B9000140F90001003900010079000100B9000100F90001403D0001407D000140BD000140FD0001C03D0001003D0001007D000100BD000100FD0001803D000540F9201A01B000FC4FF9E0031F2AFE0741F8C0035FD6080000000000000001000000010000000000009100004091000040f9
     Relocations:
       - VirtualAddress:  4
         SymbolName:      .Lstr
@@ -167,6 +173,15 @@
       - VirtualAddress:  124
         SymbolName:      .Lglobal
         Type:            IMAGE_REL_ARM64_SECREL
+      - VirtualAddress:  128
+        SymbolName:      .Lglobal5000
+        Type:            IMAGE_REL_ARM64_SECREL_LOW12A
+      - VirtualAddress:  132
+        SymbolName:      .Lglobal5000
+        Type:            IMAGE_REL_ARM64_SECREL_HIGH12A
+      - VirtualAddress:  136
+        SymbolName:      .Lglobal5000
+        Type:            IMAGE_REL_ARM64_SECREL_LOW12L
   - Name:            .data
     Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
     Alignment:       4
@@ -240,4 +255,10 @@
     SimpleType:      IMAGE_SYM_TYPE_NULL
     ComplexType:     IMAGE_SYM_DTYPE_NULL
     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
+  - Name:            .Lglobal5000
+    Value:           5000
+    SectionNumber:   4
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_STATIC
 ...