diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
--- a/llvm/include/llvm/BinaryFormat/ELF.h
+++ b/llvm/include/llvm/BinaryFormat/ELF.h
@@ -1470,8 +1470,14 @@
   GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
   GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000,
   GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002,
-  GNU_PROPERTY_X86_FEATURE_2_NEEDED = 0xc0008001,
-  GNU_PROPERTY_X86_FEATURE_2_USED = 0xc0010001,
+
+  GNU_PROPERTY_X86_UINT32_OR_LO = 0xc0008000,
+  GNU_PROPERTY_X86_FEATURE_2_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 1,
+  GNU_PROPERTY_X86_ISA_1_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 2,
+
+  GNU_PROPERTY_X86_UINT32_OR_AND_LO = 0xc0010000,
+  GNU_PROPERTY_X86_FEATURE_2_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1,
+  GNU_PROPERTY_X86_ISA_1_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 2,
 };
 
 // aarch64 processor feature bits.
@@ -1495,6 +1501,11 @@
   GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7,
   GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8,
   GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9,
+
+  GNU_PROPERTY_X86_ISA_1_BASELINE = 1 << 0,
+  GNU_PROPERTY_X86_ISA_1_V2 = 1 << 1,
+  GNU_PROPERTY_X86_ISA_1_V3 = 1 << 2,
+  GNU_PROPERTY_X86_ISA_1_V4 = 1 << 3,
 };
 
 // FreeBSD note types.
diff --git a/llvm/test/tools/llvm-readobj/ELF/note-gnu-property.s b/llvm/test/tools/llvm-readobj/ELF/note-gnu-property.s
--- a/llvm/test/tools/llvm-readobj/ELF/note-gnu-property.s
+++ b/llvm/test/tools/llvm-readobj/ELF/note-gnu-property.s
@@ -5,7 +5,7 @@
 
 // GNU:      Displaying notes found in: .note.gnu.property
 // GNU-NEXT:   Owner                 Data size       Description
-// GNU-NEXT:   GNU                   0x000000c8      NT_GNU_PROPERTY_TYPE_0 (property note)
+// GNU-NEXT:   GNU                   0x000000e8      NT_GNU_PROPERTY_TYPE_0 (property note)
 // GNU-NEXT:     Properties:  stack size: 0x100
 // GNU-NEXT:     stack size: 0x100
 // GNU-NEXT:     no copy on protected
@@ -14,6 +14,8 @@
 // GNU-NEXT:     x86 feature: <None>
 // GNU-NEXT:     x86 feature needed: x86, x87, MMX, XMM, YMM
 // GNU-NEXT:     x86 feature used: ZMM, FXSR, XSAVE, XSAVEOPT, XSAVEC
+// GNU-NEXT:     x86 ISA needed: x86-64-baseline, x86-64-v2, x86-64-v3, x86-64-v4
+// GNU-NEXT:     x86 ISA used: x86-64-baseline, x86-64-v2, x86-64-v3, x86-64-v4
 // GNU-NEXT:     <application-specific type 0xfefefefe>
 // GNU-NEXT:     stack size: <corrupt length: 0x0>
 // GNU-NEXT:     stack size: <corrupt length: 0x4>
@@ -26,10 +28,10 @@
 // LLVM-NEXT:   NoteSection {
 // LLVM-NEXT:     Name: .note.gnu.property
 // LLVM-NEXT:     Offset: 0x40
-// LLVM-NEXT:     Size: 0xD8
+// LLVM-NEXT:     Size: 0xF8
 // LLVM-NEXT:     Note {
 // LLVM-NEXT:       Owner: GNU
-// LLVM-NEXT:       Data size: 0xC8
+// LLVM-NEXT:       Data size: 0xE8
 // LLVM-NEXT:       Type: NT_GNU_PROPERTY_TYPE_0 (property note)
 // LLVM-NEXT:       Property [
 // LLVM-NEXT:         stack size: 0x100
@@ -40,6 +42,8 @@
 // LLVM-NEXT:         x86 feature: <None>
 // LLVM-NEXT:         x86 feature needed: x86, x87, MMX, XMM, YMM
 // LLVM-NEXT:         x86 feature used: ZMM, FXSR, XSAVE, XSAVEOPT, XSAVEC
+// LLVM-NEXT:         x86 ISA needed: x86-64-baseline, x86-64-v2, x86-64-v3, x86-64-v4
+// LLVM-NEXT:         x86 ISA used: x86-64-baseline, x86-64-v2, x86-64-v3, x86-64-v4
 // LLVM-NEXT:         <application-specific type 0xfefefefe>
 // LLVM-NEXT:         stack size: <corrupt length: 0x0>
 // LLVM-NEXT:         stack size: <corrupt length: 0x4>
@@ -102,6 +106,16 @@
   .long 0x000003e0         /* ZMM, ... */
   .p2align 3               /* Align to 8 byte for 64 bit */
 
+  .long 0xc0008002         /* Type: GNU_PROPERTY_X86_ISA_1_NEEDED */
+  .long 4                  /* Data size */
+  .long 0x0000000f         /* x86-64-baseline, ... */
+  .p2align 3               /* Align to 8 byte for 64 bit */
+
+  .long 0xc0010002         /* Type: GNU_PROPERTY_X86_ISA_1_USED */
+  .long 4                  /* Data size */
+  .long 0x0000000f         /* x86-64-baseline, ... */
+  .p2align 3               /* Align to 8 byte for 64 bit */
+
   /* All notes below are broken. Test we are able to report them. */
 
   /* Broken note type */
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -4762,6 +4762,26 @@
     if (PrData)
       OS << format("<unknown flags: 0x%x>", PrData);
     return OS.str();
+  case GNU_PROPERTY_X86_ISA_1_NEEDED:
+  case GNU_PROPERTY_X86_ISA_1_USED:
+    OS << "x86 ISA "
+       << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: ");
+    if (DataSize != 4) {
+      OS << format("<corrupt length: 0x%x>", DataSize);
+      return OS.str();
+    }
+    PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
+    if (PrData == 0) {
+      OS << "<None>";
+      return OS.str();
+    }
+    DumpBit(GNU_PROPERTY_X86_ISA_1_BASELINE, "x86-64-baseline");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_V2, "x86-64-v2");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_V3, "x86-64-v3");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_V4, "x86-64-v4");
+    if (PrData)
+      OS << format("<unknown flags: 0x%x>", PrData);
+    return OS.str();
   }
 }