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
@@ -1470,9 +1470,7 @@
   GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
   GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000,
   GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002,
-  GNU_PROPERTY_X86_ISA_1_NEEDED = 0xc0008000,
   GNU_PROPERTY_X86_FEATURE_2_NEEDED = 0xc0008001,
-  GNU_PROPERTY_X86_ISA_1_USED = 0xc0010000,
   GNU_PROPERTY_X86_FEATURE_2_USED = 0xc0010001,
 };
 
@@ -1487,31 +1485,6 @@
   GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0,
   GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1,
 
-  GNU_PROPERTY_X86_ISA_1_CMOV = 1 << 0,
-  GNU_PROPERTY_X86_ISA_1_SSE = 1 << 1,
-  GNU_PROPERTY_X86_ISA_1_SSE2 = 1 << 2,
-  GNU_PROPERTY_X86_ISA_1_SSE3 = 1 << 3,
-  GNU_PROPERTY_X86_ISA_1_SSSE3 = 1 << 4,
-  GNU_PROPERTY_X86_ISA_1_SSE4_1 = 1 << 5,
-  GNU_PROPERTY_X86_ISA_1_SSE4_2 = 1 << 6,
-  GNU_PROPERTY_X86_ISA_1_AVX = 1 << 7,
-  GNU_PROPERTY_X86_ISA_1_AVX2 = 1 << 8,
-  GNU_PROPERTY_X86_ISA_1_FMA = 1 << 9,
-  GNU_PROPERTY_X86_ISA_1_AVX512F = 1 << 10,
-  GNU_PROPERTY_X86_ISA_1_AVX512CD = 1 << 11,
-  GNU_PROPERTY_X86_ISA_1_AVX512ER = 1 << 12,
-  GNU_PROPERTY_X86_ISA_1_AVX512PF = 1 << 13,
-  GNU_PROPERTY_X86_ISA_1_AVX512VL = 1 << 14,
-  GNU_PROPERTY_X86_ISA_1_AVX512DQ = 1 << 15,
-  GNU_PROPERTY_X86_ISA_1_AVX512BW = 1 << 16,
-  GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS = 1 << 17,
-  GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW = 1 << 18,
-  GNU_PROPERTY_X86_ISA_1_AVX512_BITALG = 1 << 19,
-  GNU_PROPERTY_X86_ISA_1_AVX512_IFMA = 1 << 20,
-  GNU_PROPERTY_X86_ISA_1_AVX512_VBMI = 1 << 21,
-  GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2 = 1 << 22,
-  GNU_PROPERTY_X86_ISA_1_AVX512_VNNI = 1 << 23,
-
   GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0,
   GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1,
   GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2,
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
@@ -5,15 +5,13 @@
 
 // GNU:      Displaying notes found in: .note.gnu.property
 // GNU-NEXT:   Owner                 Data size       Description
-// GNU-NEXT:   GNU                   0x000000e8      NT_GNU_PROPERTY_TYPE_0 (property note)
+// GNU-NEXT:   GNU                   0x000000c8      NT_GNU_PROPERTY_TYPE_0 (property note)
 // GNU-NEXT:     Properties:  stack size: 0x100
 // GNU-NEXT:     stack size: 0x100
 // GNU-NEXT:     no copy on protected
 // GNU-NEXT:     x86 feature: SHSTK
 // GNU-NEXT:     x86 feature: IBT, SHSTK
 // GNU-NEXT:     x86 feature: <None>
-// GNU-NEXT:     x86 ISA needed: CMOV, SSE, SSE2, SSE3, SSSE3, SSE4_1, SSE4_2, AVX, AVX2, FMA, AVX512F, AVX512CD
-// GNU-NEXT:     x86 ISA used: AVX512ER, AVX512PF, AVX512VL, AVX512DQ, AVX512BW, AVX512_4FMAPS, AVX512_4VNNIW, AVX512_BITALG, AVX512_IFMA, AVX512_VBMI, AVX512_VBMI2, AVX512_VNNI
 // GNU-NEXT:     x86 feature needed: x86, x87, MMX, XMM, YMM
 // GNU-NEXT:     x86 feature used: ZMM, FXSR, XSAVE, XSAVEOPT, XSAVEC
 // GNU-NEXT:     <application-specific type 0xfefefefe>
@@ -28,10 +26,10 @@
 // LLVM-NEXT:   NoteSection {
 // LLVM-NEXT:     Name: .note.gnu.property
 // LLVM-NEXT:     Offset: 0x40
-// LLVM-NEXT:     Size: 0xF8
+// LLVM-NEXT:     Size: 0xD8
 // LLVM-NEXT:     Note {
 // LLVM-NEXT:       Owner: GNU
-// LLVM-NEXT:       Data size: 0xE8
+// LLVM-NEXT:       Data size: 0xC8
 // LLVM-NEXT:       Type: NT_GNU_PROPERTY_TYPE_0 (property note)
 // LLVM-NEXT:       Property [
 // LLVM-NEXT:         stack size: 0x100
@@ -40,8 +38,6 @@
 // LLVM-NEXT:         x86 feature: SHSTK
 // LLVM-NEXT:         x86 feature: IBT, SHSTK
 // LLVM-NEXT:         x86 feature: <None>
-// LLVM-NEXT:         x86 ISA needed: CMOV, SSE, SSE2, SSE3, SSSE3, SSE4_1, SSE4_2, AVX, AVX2, FMA, AVX512F, AVX512CD
-// LLVM-NEXT:         x86 ISA used: AVX512ER, AVX512PF, AVX512VL, AVX512DQ, AVX512BW, AVX512_4FMAPS, AVX512_4VNNIW, AVX512_BITALG, AVX512_IFMA, AVX512_VBMI, AVX512_VBMI2, AVX512_VNNI
 // LLVM-NEXT:         x86 feature needed: x86, x87, MMX, XMM, YMM
 // LLVM-NEXT:         x86 feature used: ZMM, FXSR, XSAVE, XSAVEOPT, XSAVEC
 // LLVM-NEXT:         <application-specific type 0xfefefefe>
@@ -96,16 +92,6 @@
   .long 0           /* Empty flags, not an error */
   .p2align 3        /* Align to 8 byte for 64 bit */
 
-  .long 0xc0008000         /* Type: GNU_PROPERTY_X86_ISA_1_NEEDED */
-  .long 4                  /* Data size */
-  .long 0x00000fff         /* CMOV, ... */
-  .p2align 3               /* Align to 8 byte for 64 bit */
-
-  .long 0xc0010000         /* Type: GNU_PROPERTY_X86_ISA_1_USED */
-  .long 4                  /* Data size */
-  .long 0x00fff000         /* AVX512_ER, ... */
-  .p2align 3               /* Align to 8 byte for 64 bit */
-
   .long 0xc0008001         /* Type: GNU_PROPERTY_X86_FEATURE_2_NEEDED */
   .long 4                  /* Data size */
   .long 0x0000001f         /* X86, ... */
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
@@ -4736,47 +4736,6 @@
     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_CMOV, "CMOV");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2");
-    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI");
-    if (PrData)
-      OS << format("<unknown flags: 0x%x>", PrData);
-    return OS.str();
-    break;
   case GNU_PROPERTY_X86_FEATURE_2_NEEDED:
   case GNU_PROPERTY_X86_FEATURE_2_USED:
     OS << "x86 feature "