[clang] [compiler-rt] [llvm] Revert "[X86] Support -march=diamondrapids (#113881)" (PR #116563)

via cfe-commits cfe-commits at lists.llvm.org
Sun Nov 17 16:45:31 PST 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-driver

Author: Freddy Ye (FreddyLeaf)

<details>
<summary>Changes</summary>

This reverts commit 826b845c9e97448395431be3e4e5da585bd98c5e.


---

Patch is 20.48 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/116563.diff


16 Files Affected:

- (modified) clang/docs/ReleaseNotes.rst (-2) 
- (modified) clang/lib/Basic/Targets/X86.cpp (-2) 
- (modified) clang/test/CodeGen/attr-cpuspecific-cpus.c (-1) 
- (modified) clang/test/CodeGen/attr-target-mv.c (-1) 
- (modified) clang/test/CodeGen/target-builtin-noerror.c (-1) 
- (modified) clang/test/Driver/x86-march.c (-4) 
- (modified) clang/test/Misc/target-invalid-cpu-note/x86.c (-4) 
- (modified) clang/test/Preprocessor/predefined-arch-macros.c (-54) 
- (modified) compiler-rt/lib/builtins/cpu_model/x86.c (-14) 
- (modified) llvm/docs/ReleaseNotes.md (-2) 
- (modified) llvm/include/llvm/TargetParser/X86TargetParser.def (-1) 
- (modified) llvm/include/llvm/TargetParser/X86TargetParser.h (-1) 
- (modified) llvm/lib/Target/X86/X86.td (-29) 
- (modified) llvm/lib/TargetParser/Host.cpp (-13) 
- (modified) llvm/lib/TargetParser/X86TargetParser.cpp (-10) 
- (modified) llvm/test/CodeGen/X86/cpus-intel.ll (-2) 


``````````diff
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 044f62e770a7a0..a8830a5658c7da 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -769,8 +769,6 @@ X86 Support
 - Support ISA of ``AMX-TF32``.
 - Support ISA of ``MOVRS``.
 
-- Supported ``-march/tune=diamondrapids``
-
 Arm and AArch64 Support
 ^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/clang/lib/Basic/Targets/X86.cpp b/clang/lib/Basic/Targets/X86.cpp
index 5993257e27d5a9..086b4415412e67 100644
--- a/clang/lib/Basic/Targets/X86.cpp
+++ b/clang/lib/Basic/Targets/X86.cpp
@@ -667,7 +667,6 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
   case CK_GraniterapidsD:
   case CK_Emeraldrapids:
   case CK_Clearwaterforest:
-  case CK_Diamondrapids:
     // FIXME: Historically, we defined this legacy name, it would be nice to
     // remove it at some point. We've never exposed fine-grained names for
     // recent primary x86 CPUs, and we should keep it that way.
@@ -1652,7 +1651,6 @@ std::optional<unsigned> X86TargetInfo::getCPUCacheLineSize() const {
     case CK_GraniterapidsD:
     case CK_Emeraldrapids:
     case CK_Clearwaterforest:
-    case CK_Diamondrapids:
     case CK_KNL:
     case CK_KNM:
     // K7
diff --git a/clang/test/CodeGen/attr-cpuspecific-cpus.c b/clang/test/CodeGen/attr-cpuspecific-cpus.c
index 1dd095ec9e191f..dd154fd227b25b 100644
--- a/clang/test/CodeGen/attr-cpuspecific-cpus.c
+++ b/clang/test/CodeGen/attr-cpuspecific-cpus.c
@@ -43,7 +43,6 @@ ATTR(cpu_specific(icelake_client)) void CPU(void){}
 ATTR(cpu_specific(tigerlake)) void CPU(void){}
 ATTR(cpu_specific(alderlake)) void CPU(void){}
 ATTR(cpu_specific(sapphirerapids)) void CPU(void){}
-ATTR(cpu_specific(diamondrapids)) void CPU(void){}
 
 // ALIAS CPUs
 ATTR(cpu_specific(pentium_iii_no_xmm_regs)) void CPU0(void){}
diff --git a/clang/test/CodeGen/attr-target-mv.c b/clang/test/CodeGen/attr-target-mv.c
index 6911b55203b7e7..2c4b95ca04370a 100644
--- a/clang/test/CodeGen/attr-target-mv.c
+++ b/clang/test/CodeGen/attr-target-mv.c
@@ -29,7 +29,6 @@ int __attribute__((target("arch=lunarlake"))) foo(void) {return 23;}
 int __attribute__((target("arch=gracemont"))) foo(void) {return 24;}
 int __attribute__((target("arch=pantherlake"))) foo(void) {return 25;}
 int __attribute__((target("arch=clearwaterforest"))) foo(void) {return 26;}
-int __attribute__((target("arch=diamondrapids"))) foo(void) {return 27;}
 int __attribute__((target("default"))) foo(void) { return 2; }
 
 int bar(void) {
diff --git a/clang/test/CodeGen/target-builtin-noerror.c b/clang/test/CodeGen/target-builtin-noerror.c
index 0bbd8c3e5ddd81..1e53621bc6b5ae 100644
--- a/clang/test/CodeGen/target-builtin-noerror.c
+++ b/clang/test/CodeGen/target-builtin-noerror.c
@@ -209,5 +209,4 @@ void verifycpustrings(void) {
   (void)__builtin_cpu_is("znver3");
   (void)__builtin_cpu_is("znver4");
   (void)__builtin_cpu_is("znver5");
-  (void)__builtin_cpu_is("diamondrapids");
 }
diff --git a/clang/test/Driver/x86-march.c b/clang/test/Driver/x86-march.c
index 341f01c8d668df..3bc2a82ae778d6 100644
--- a/clang/test/Driver/x86-march.c
+++ b/clang/test/Driver/x86-march.c
@@ -120,10 +120,6 @@
 // RUN:   | FileCheck %s -check-prefix=clearwaterforest
 // clearwaterforest: "-target-cpu" "clearwaterforest"
 //
-// RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=diamondrapids 2>&1 \
-// RUN:   | FileCheck %s -check-prefix=diamondrapids
-// diamondrapids: "-target-cpu" "diamondrapids"
-//
 // RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=lakemont 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=lakemont
 // lakemont: "-target-cpu" "lakemont"
diff --git a/clang/test/Misc/target-invalid-cpu-note/x86.c b/clang/test/Misc/target-invalid-cpu-note/x86.c
index f89cdc2aa573ff..7879676040af46 100644
--- a/clang/test/Misc/target-invalid-cpu-note/x86.c
+++ b/clang/test/Misc/target-invalid-cpu-note/x86.c
@@ -69,7 +69,6 @@
 // X86-SAME: {{^}}, graniterapids-d
 // X86-SAME: {{^}}, emeraldrapids
 // X86-SAME: {{^}}, clearwaterforest
-// X86-SAME: {{^}}, diamondrapids
 // X86-SAME: {{^}}, knl
 // X86-SAME: {{^}}, knm
 // X86-SAME: {{^}}, lakemont
@@ -156,7 +155,6 @@
 // X86_64-SAME: {{^}}, graniterapids-d
 // X86_64-SAME: {{^}}, emeraldrapids
 // X86_64-SAME: {{^}}, clearwaterforest
-// X86_64-SAME: {{^}}, diamondrapids
 // X86_64-SAME: {{^}}, knl
 // X86_64-SAME: {{^}}, knm
 // X86_64-SAME: {{^}}, k8
@@ -252,7 +250,6 @@
 // TUNE_X86-SAME: {{^}}, graniterapids-d
 // TUNE_X86-SAME: {{^}}, emeraldrapids
 // TUNE_X86-SAME: {{^}}, clearwaterforest
-// TUNE_X86-SAME: {{^}}, diamondrapids
 // TUNE_X86-SAME: {{^}}, knl
 // TUNE_X86-SAME: {{^}}, knm
 // TUNE_X86-SAME: {{^}}, lakemont
@@ -355,7 +352,6 @@
 // TUNE_X86_64-SAME: {{^}}, graniterapids-d
 // TUNE_X86_64-SAME: {{^}}, emeraldrapids
 // TUNE_X86_64-SAME: {{^}}, clearwaterforest
-// TUNE_X86_64-SAME: {{^}}, diamondrapids
 // TUNE_X86_64-SAME: {{^}}, knl
 // TUNE_X86_64-SAME: {{^}}, knm
 // TUNE_X86_64-SAME: {{^}}, lakemont
diff --git a/clang/test/Preprocessor/predefined-arch-macros.c b/clang/test/Preprocessor/predefined-arch-macros.c
index 20aa2d4e0a54cb..35801e758cc58a 100644
--- a/clang/test/Preprocessor/predefined-arch-macros.c
+++ b/clang/test/Preprocessor/predefined-arch-macros.c
@@ -1867,23 +1867,13 @@
 // RUN: %clang -march=graniterapids-d -m32 -E -dM %s -o - 2>&1 \
 // RUN:     --target=i386 \
 // RUN:   | FileCheck -match-full-lines %s -check-prefixes=CHECK_GNR_M32,CHECK_GNRD_M32
-// RUN: %clang -march=diamondrapids -m32 -E -dM %s -o - 2>&1 \
-// RUN:     --target=i386 \
-// RUN:   | FileCheck -match-full-lines %s -check-prefixes=CHECK_GNR_M32,CHECK_GNRD_M32,CHECK_DMR_M32
 // CHECK_GNR_M32: #define __AES__ 1
-// CHECK_DMR_M32: #define __AMX_AVX512__ 1
 // CHECK_GNR_M32: #define __AMX_BF16__ 1
 // CHECK_GNR_M32-NOT: #define __AMX_COMPLEX__ 1
 // CHECK_GNRD_M32: #define __AMX_COMPLEX__ 1
 // CHECK_GNR_M32: #define __AMX_FP16__ 1
-// CHECK_DMR_M32: #define __AMX_FP8__ 1
 // CHECK_GNR_M32: #define __AMX_INT8__ 1
-// CHECK_DMR_M32: #define __AMX_MOVRS__ 1
-// CHECK_DMR_M32: #define __AMX_TF32__ 1
 // CHECK_GNR_M32: #define __AMX_TILE__ 1
-// CHECK_DMR_M32: #define __AMX_TRANSPOSE__ 1
-// CHECK_DMR_M32: #define __AVX10_2_512__ 1
-// CHECK_DMR_M32: #define __AVX10_2__ 1
 // CHECK_GNR_M32: #define __AVX2__ 1
 // CHECK_GNR_M32: #define __AVX512BF16__ 1
 // CHECK_GNR_M32: #define __AVX512BITALG__ 1
@@ -1898,21 +1888,13 @@
 // CHECK_GNR_M32: #define __AVX512VL__ 1
 // CHECK_GNR_M32: #define __AVX512VNNI__ 1
 // CHECK_GNR_M32: #define __AVX512VPOPCNTDQ__ 1
-// CHECK_DMR_M32: #define __AVXIFMA__ 1
-// CHECK_DMR_M32: #define __AVXNECONVERT__ 1
-// CHECK_DMR_M32: #define __AVXVNNIINT16__ 1
-// CHECK_DMR_M32: #define __AVXVNNIINT8__ 1
 // CHECK_GNR_M32: #define __AVXVNNI__ 1
 // CHECK_GNR_M32: #define __AVX__ 1
 // CHECK_GNR_M32: #define __BMI2__ 1
 // CHECK_GNR_M32: #define __BMI__ 1
-// CHECK_DMR_M32: #define __CCMP__ 1
-// CHECK_DMR_M32: #define __CF__ 1
 // CHECK_GNR_M32: #define __CLDEMOTE__ 1
 // CHECK_GNR_M32: #define __CLFLUSHOPT__ 1
 // CHECK_GNR_M32: #define __CLWB__ 1
-// CHECK_DMR_M32: #define __CMPCCXADD__ 1
-// CHECK_DMR_M32: #define __EGPR__ 1
 // CHECK_GNR_M32: #define __ENQCMD__ 1
 // CHECK_GNR_M32: #define __EVEX256__ 1
 // CHECK_GNR_M32: #define __EVEX512__ 1
@@ -1923,28 +1905,20 @@
 // CHECK_GNR_M32: #define __LZCNT__ 1
 // CHECK_GNR_M32: #define __MMX__ 1
 // CHECK_GNR_M32: #define __MOVBE__ 1
-// CHECK_DMR_M32: #define __MOVRS__ 1
-// CHECK_DMR_M32: #define __NDD__ 1
-// CHECK_DMR_M32: #define __NF__ 1
 // CHECK_GNR_M32: #define __PCLMUL__ 1
 // CHECK_GNR_M32: #define __PCONFIG__ 1
 // CHECK_GNR_M32: #define __PKU__ 1
 // CHECK_GNR_M32: #define __POPCNT__ 1
-// CHECK_DMR_M32: #define __PPX__ 1
 // CHECK_GNR_M32: #define __PREFETCHI__ 1
 // CHECK_GNR_M32: #define __PRFCHW__ 1
 // CHECK_GNR_M32: #define __PTWRITE__ 1
-// CHECK_DMR_M32: #define __PUSH2POP2__ 1
 // CHECK_GNR_M32: #define __RDPID__ 1
 // CHECK_GNR_M32: #define __RDRND__ 1
 // CHECK_GNR_M32: #define __RDSEED__ 1
 // CHECK_GNR_M32: #define __SERIALIZE__ 1
 // CHECK_GNR_M32: #define __SGX__ 1
-// CHECK_DMR_M32: #define __SHA512__ 1
 // CHECK_GNR_M32: #define __SHA__ 1
 // CHECK_GNR_M32: #define __SHSTK__ 1
-// CHECK_DMR_M32: #define __SM3__ 1
-// CHECK_DMR_M32: #define __SM4__ 1
 // CHECK_GNR_M32: #define __SSE2__ 1
 // CHECK_GNR_M32: #define __SSE3__ 1
 // CHECK_GNR_M32: #define __SSE4_1__ 1
@@ -1961,7 +1935,6 @@
 // CHECK_GNR_M32: #define __XSAVEOPT__ 1
 // CHECK_GNR_M32: #define __XSAVES__ 1
 // CHECK_GNR_M32: #define __XSAVE__ 1
-// CHECK_DMR_M32: #define __ZU__ 1
 // CHECK_GNR_M32: #define __corei7 1
 // CHECK_GNR_M32: #define __corei7__ 1
 // CHECK_GNR_M32: #define __i386 1
@@ -1975,23 +1948,13 @@
 // RUN: %clang -march=graniterapids-d -m64 -E -dM %s -o - 2>&1 \
 // RUN:     --target=x86_64 \
 // RUN:   | FileCheck -match-full-lines %s -check-prefixes=CHECK_GNR_M64,CHECK_GNRD_M64
-// RUN: %clang -march=diamondrapids -m64 -E -dM %s -o - 2>&1 \
-// RUN:     --target=x86_64 \
-// RUN:   | FileCheck -match-full-lines %s -check-prefixes=CHECK_GNR_M64,CHECK_GNRD_M64,CHECK_DMR_M64
 // CHECK_GNR_M64: #define __AES__ 1
-// CHECK_DMR_M64: #define __AMX_AVX512__ 1
 // CHECK_GNR_M64: #define __AMX_BF16__ 1
 // CHECK_GNR_M64-NOT: #define __AMX_COMPLEX__ 1
 // CHECK_GNRD_M64: #define __AMX_COMPLEX__ 1
 // CHECK_GNR_M64: #define __AMX_FP16__ 1
-// CHECK_DMR_M64: #define __AMX_FP8__ 1
 // CHECK_GNR_M64: #define __AMX_INT8__ 1
-// CHECK_DMR_M64: #define __AMX_MOVRS__ 1
-// CHECK_DMR_M64: #define __AMX_TF32__ 1
 // CHECK_GNR_M64: #define __AMX_TILE__ 1
-// CHECK_DMR_M64: #define __AMX_TRANSPOSE__ 1
-// CHECK_DMR_M64: #define __AVX10_2_512__ 1
-// CHECK_DMR_M64: #define __AVX10_2__ 1
 // CHECK_GNR_M64: #define __AVX2__ 1
 // CHECK_GNR_M64: #define __AVX512BF16__ 1
 // CHECK_GNR_M64: #define __AVX512BITALG__ 1
@@ -2006,21 +1969,13 @@
 // CHECK_GNR_M64: #define __AVX512VL__ 1
 // CHECK_GNR_M64: #define __AVX512VNNI__ 1
 // CHECK_GNR_M64: #define __AVX512VPOPCNTDQ__ 1
-// CHECK_DMR_M64: #define __AVXIFMA__ 1
-// CHECK_DMR_M64: #define __AVXNECONVERT__ 1
-// CHECK_DMR_M64: #define __AVXVNNIINT16__ 1
-// CHECK_DMR_M64: #define __AVXVNNIINT8__ 1
 // CHECK_GNR_M64: #define __AVXVNNI__ 1
 // CHECK_GNR_M64: #define __AVX__ 1
 // CHECK_GNR_M64: #define __BMI2__ 1
 // CHECK_GNR_M64: #define __BMI__ 1
-// CHECK_DMR_M64: #define __CCMP__ 1
-// CHECK_DMR_M64: #define __CF__ 1
 // CHECK_GNR_M64: #define __CLDEMOTE__ 1
 // CHECK_GNR_M64: #define __CLFLUSHOPT__ 1
 // CHECK_GNR_M64: #define __CLWB__ 1
-// CHECK_DMR_M64: #define __CMPCCXADD__ 1
-// CHECK_DMR_M64: #define __EGPR__ 1
 // CHECK_GNR_M64: #define __ENQCMD__ 1
 // CHECK_GNR_M64: #define __EVEX256__ 1
 // CHECK_GNR_M64: #define __EVEX512__ 1
@@ -2031,28 +1986,20 @@
 // CHECK_GNR_M64: #define __LZCNT__ 1
 // CHECK_GNR_M64: #define __MMX__ 1
 // CHECK_GNR_M64: #define __MOVBE__ 1
-// CHECK_DMR_M64: #define __MOVRS__ 1
-// CHECK_DMR_M64: #define __NDD__ 1
-// CHECK_DMR_M64: #define __NF__ 1
 // CHECK_GNR_M64: #define __PCLMUL__ 1
 // CHECK_GNR_M64: #define __PCONFIG__ 1
 // CHECK_GNR_M64: #define __PKU__ 1
 // CHECK_GNR_M64: #define __POPCNT__ 1
-// CHECK_DMR_M64: #define __PPX__ 1
 // CHECK_GNR_M64: #define __PREFETCHI__ 1
 // CHECK_GNR_M64: #define __PRFCHW__ 1
 // CHECK_GNR_M64: #define __PTWRITE__ 1
-// CHECK_DMR_M64: #define __PUSH2POP2__ 1
 // CHECK_GNR_M64: #define __RDPID__ 1
 // CHECK_GNR_M64: #define __RDRND__ 1
 // CHECK_GNR_M64: #define __RDSEED__ 1
 // CHECK_GNR_M64: #define __SERIALIZE__ 1
 // CHECK_GNR_M64: #define __SGX__ 1
-// CHECK_DMR_M64: #define __SHA512__ 1
 // CHECK_GNR_M64: #define __SHA__ 1
 // CHECK_GNR_M64: #define __SHSTK__ 1
-// CHECK_DMR_M64: #define __SM3__ 1
-// CHECK_DMR_M64: #define __SM4__ 1
 // CHECK_GNR_M64: #define __SSE2__ 1
 // CHECK_GNR_M64: #define __SSE3__ 1
 // CHECK_GNR_M64: #define __SSE4_1__ 1
@@ -2069,7 +2016,6 @@
 // CHECK_GNR_M64: #define __XSAVEOPT__ 1
 // CHECK_GNR_M64: #define __XSAVES__ 1
 // CHECK_GNR_M64: #define __XSAVE__ 1
-// CHECK_DMR_M64: #define __ZU__ 1
 // CHECK_GNR_M64: #define __amd64 1
 // CHECK_GNR_M64: #define __amd64__ 1
 // CHECK_GNR_M64: #define __corei7 1
diff --git a/compiler-rt/lib/builtins/cpu_model/x86.c b/compiler-rt/lib/builtins/cpu_model/x86.c
index 3315dceb7f5622..bfa478c4427a5b 100644
--- a/compiler-rt/lib/builtins/cpu_model/x86.c
+++ b/compiler-rt/lib/builtins/cpu_model/x86.c
@@ -103,7 +103,6 @@ enum ProcessorSubtypes {
   INTEL_COREI7_ARROWLAKE_S,
   INTEL_COREI7_PANTHERLAKE,
   AMDFAM1AH_ZNVER5,
-  INTEL_COREI7_DIAMONDRAPIDS,
   CPU_SUBTYPE_MAX
 };
 
@@ -601,19 +600,6 @@ static const char *getIntelProcessorTypeAndSubtype(unsigned Family,
       break;
     }
     break;
-  case 19:
-    switch (Model) {
-    // Diamond Rapids:
-    case 0x01:
-      CPU = "diamondrapids";
-      *Type = INTEL_COREI7;
-      *Subtype = INTEL_COREI7_DIAMONDRAPIDS;
-      break;
-
-    default: // Unknown family 19 CPU.
-      break;
-    }
-    break;
   default:
     break; // Unknown.
   }
diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index 03c758c4e7f4b6..0c1019c2fdca03 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -237,8 +237,6 @@ Changes to the X86 Backend
 
 * Supported ISA of `MSR_IMM`.
 
-* Supported ``-mcpu=diamondrapids``
-
 Changes to the OCaml bindings
 -----------------------------
 
diff --git a/llvm/include/llvm/TargetParser/X86TargetParser.def b/llvm/include/llvm/TargetParser/X86TargetParser.def
index 5b719a2b0eb399..5cad8e117f4ee2 100644
--- a/llvm/include/llvm/TargetParser/X86TargetParser.def
+++ b/llvm/include/llvm/TargetParser/X86TargetParser.def
@@ -107,7 +107,6 @@ X86_CPU_SUBTYPE(INTEL_COREI7_ARROWLAKE,      "arrowlake")
 X86_CPU_SUBTYPE(INTEL_COREI7_ARROWLAKE_S,    "arrowlake-s")
 X86_CPU_SUBTYPE(INTEL_COREI7_PANTHERLAKE,    "pantherlake")
 X86_CPU_SUBTYPE(AMDFAM1AH_ZNVER5,            "znver5")
-X86_CPU_SUBTYPE(INTEL_COREI7_DIAMONDRAPIDS,  "diamondrapids")
 
 // Alternate names supported by __builtin_cpu_is and target multiversioning.
 X86_CPU_SUBTYPE_ALIAS(INTEL_COREI7_ALDERLAKE, "raptorlake")
diff --git a/llvm/include/llvm/TargetParser/X86TargetParser.h b/llvm/include/llvm/TargetParser/X86TargetParser.h
index 8447aca7bb92ae..0e17c4674719cf 100644
--- a/llvm/include/llvm/TargetParser/X86TargetParser.h
+++ b/llvm/include/llvm/TargetParser/X86TargetParser.h
@@ -121,7 +121,6 @@ enum CPUKind {
   CK_GraniterapidsD,
   CK_Emeraldrapids,
   CK_Clearwaterforest,
-  CK_Diamondrapids,
   CK_KNL,
   CK_KNM,
   CK_Lakemont,
diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index 5722167beca9f8..75224d5b26e33f 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -1155,33 +1155,6 @@ def ProcessorFeatures {
   list<SubtargetFeature> GNRDFeatures =
     !listconcat(GNRFeatures, GNRDAdditionalFeatures);
 
-  // Diamond Rapids
-  list<SubtargetFeature> DMRAdditionalFeatures = [FeatureAVX10_2_512,
-                                                  FeatureSM4,
-                                                  FeatureCMPCCXADD,
-                                                  FeatureAVXIFMA,
-                                                  FeatureAVXNECONVERT,
-                                                  FeatureAVXVNNIINT8,
-                                                  FeatureAVXVNNIINT16,
-                                                  FeatureSHA512,
-                                                  FeatureSM3,
-                                                  FeatureEGPR,
-                                                  FeatureZU,
-                                                  FeatureCCMP,
-                                                  FeaturePush2Pop2,
-                                                  FeaturePPX,
-                                                  FeatureNDD,
-                                                  FeatureNF,
-                                                  FeatureCF,
-                                                  FeatureMOVRS,
-                                                  FeatureAMXMOVRS,
-                                                  FeatureAMXAVX512,
-                                                  FeatureAMXFP8,
-                                                  FeatureAMXTF32,
-                                                  FeatureAMXTRANSPOSE];
-  list<SubtargetFeature> DMRFeatures =
-    !listconcat(GNRDFeatures, DMRAdditionalFeatures);
-
   // Atom
   list<SubtargetFeature> AtomFeatures = [FeatureX87,
                                          FeatureCX8,
@@ -1883,8 +1856,6 @@ foreach P = ["graniterapids-d", "graniterapids_d"] in {
 def : ProcModel<P, SapphireRapidsModel,
                 ProcessorFeatures.GNRDFeatures, ProcessorFeatures.GNRTuning>;
 }
-def : ProcModel<"diamondrapids", SapphireRapidsModel,
-                ProcessorFeatures.DMRFeatures, ProcessorFeatures.GNRTuning>;
 
 // AMD CPUs.
 
diff --git a/llvm/lib/TargetParser/Host.cpp b/llvm/lib/TargetParser/Host.cpp
index b295db5a29c368..a7891d799ae409 100644
--- a/llvm/lib/TargetParser/Host.cpp
+++ b/llvm/lib/TargetParser/Host.cpp
@@ -1010,19 +1010,6 @@ static StringRef getIntelProcessorTypeAndSubtype(unsigned Family,
     CPU = "pentium4";
     break;
   }
-  case 19:
-    switch (Model) {
-    // Diamond Rapids:
-    case 0x01:
-      CPU = "diamondrapids";
-      *Type = X86::INTEL_COREI7;
-      *Subtype = X86::INTEL_COREI7_DIAMONDRAPIDS;
-      break;
-
-    default: // Unknown family 19 CPU.
-      break;
-    }
-    break;
   default:
     break; // Unknown.
   }
diff --git a/llvm/lib/TargetParser/X86TargetParser.cpp b/llvm/lib/TargetParser/X86TargetParser.cpp
index 00e5d579204c9c..0da740743c9b7c 100644
--- a/llvm/lib/TargetParser/X86TargetParser.cpp
+++ b/llvm/lib/TargetParser/X86TargetParser.cpp
@@ -138,14 +138,6 @@ constexpr FeatureBitset FeaturesSapphireRapids =
     FeatureWAITPKG;
 constexpr FeatureBitset FeaturesGraniteRapids =
     FeaturesSapphireRapids | FeatureAMX_FP16 | FeaturePREFETCHI;
-constexpr FeatureBitset FeaturesDiamondRapids =
-    FeaturesGraniteRapids | FeatureAVX10_2_512 |
-    FeatureCMPCCXADD | FeatureAVXIFMA | FeatureAVXNECONVERT |
-    FeatureAVXVNNIINT8 | FeatureAVXVNNIINT16 | FeatureSHA512 | FeatureSM3 |
-    FeatureSM4 | FeatureEGPR | FeatureZU | FeatureCCMP | FeaturePush2Pop2 |
-    FeaturePPX | FeatureNDD | FeatureNF | FeatureCF | FeatureMOVRS |
-    FeatureAMX_MOVRS | FeatureAMX_AVX512 | FeatureAMX_FP8 | FeatureAMX_TF32 |
-    FeatureAMX_TRANSPOSE;
 
 // Intel Atom processors.
 // Bonnell has feature parity with Core2 and adds MOVBE.
@@ -389,8 +381,6 @@ constexpr ProcInfo Processors[] = {
   { {"emeraldrapids"}, CK_Emeraldrapids, FEATURE_AVX512FP16, FeaturesSapphireRapids, 'n', false },
   // Clearwaterforest microarchitecture based processors.
   { {"clearwaterforest"}, CK_Lunarlake, FEATURE_AVX2, FeaturesClearwaterforest, 'p', false },
-  // Diamond Rapids microarchitecture based processors.
-  { {"diamondrapids"}, CK_Diamondrapids, FEATURE_AVX10_2_512, FeaturesDiamondRapids, 'z', false },
   // Knights Landing processor.
   { {"knl"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL, 'Z', false },
   { {"mic_avx512"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL, 'Z', true },
diff --git a/llvm/test/CodeGen/X86/cpus-intel.ll b/llvm/test/CodeGen/X86/cpus-intel.ll
index 40c38c2e828498..5e4d09e081fec9 100644
--- a/llvm/test/CodeGen/X86/cpus-intel.ll
+++ b/llvm/test/CodeGen/X86/cpus-intel.ll
@@ -39,7 +39,6 @@
 ; RUN: llc < %s -o /dev/null -mtriple=i686-unknown-unknown -mcpu=gracemont 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=i686-unknown-unknown -mcpu=pantherlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=i686-unknown-unknown -mcpu=clearwaterforest 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
-; RUN: llc < %s -o /dev/null -mtriple=i686-unknown-unknown -mcpu=diamondrapids 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=nocona 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=core2 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
@@ -105,7 +104,6 @@
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=gracemont 2>&1 | FileCheck %s --check-prefix=CHECK-NO...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/116563


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