diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h
index e9fd586704d..f73834b086c 100644
--- a/gcc/common/config/i386/cpuinfo.h
+++ b/gcc/common/config/i386/cpuinfo.h
@@ -789,6 +789,8 @@ get_available_features (struct __processor_model *cpu_model,
       __cpuid_count (7, 1, eax, ebx, ecx, edx);
       if (eax & bit_HRESET)
 	set_feature (FEATURE_HRESET);
+      if (eax & bit_CMPCCXADD)
+	set_feature(FEATURE_CMPCCXADD);
       if (avx_usable)
 	{
 	  if (eax & bit_AVXVNNI)
diff --git a/gcc/common/config/i386/i386-common.cc b/gcc/common/config/i386/i386-common.cc
index f9c906f75cf..75966779d82 100644
--- a/gcc/common/config/i386/i386-common.cc
+++ b/gcc/common/config/i386/i386-common.cc
@@ -110,6 +110,7 @@ along with GCC; see the file COPYING3.  If not see
 #define OPTION_MASK_ISA2_AMX_BF16_SET OPTION_MASK_ISA2_AMX_BF16
 #define OPTION_MASK_ISA2_AVXVNNIINT8_SET OPTION_MASK_ISA2_AVXVNNIINT8
 #define OPTION_MASK_ISA2_AVXNECONVERT_SET OPTION_MASK_ISA2_AVXNECONVERT
+#define OPTION_MASK_ISA2_CMPCCXADD_SET OPTION_MASK_ISA2_CMPCCXADD
 
 /* SSE4 includes both SSE4.1 and SSE4.2. -msse4 should be the same
    as -msse4.2.  */
@@ -283,6 +284,7 @@ along with GCC; see the file COPYING3.  If not see
 #define OPTION_MASK_ISA2_WIDEKL_UNSET OPTION_MASK_ISA2_WIDEKL
 #define OPTION_MASK_ISA2_AVXVNNIINT8_UNSET OPTION_MASK_ISA2_AVXVNNIINT8
 #define OPTION_MASK_ISA2_AVXNECONVERT_UNSET OPTION_MASK_ISA2_AVXNECONVERT
+#define OPTION_MASK_ISA2_CMPCCXADD_UNSET OPTION_MASK_ISA2_CMPCCXADD
 
 /* SSE4 includes both SSE4.1 and SSE4.2.  -mno-sse4 should the same
    as -mno-sse4.1. */
@@ -1181,6 +1183,19 @@ ix86_handle_option (struct gcc_options *opts,
 	}
       return true;
 
+    case OPT_mcmpccxadd:
+      if (value)
+	{
+	  opts->x_ix86_isa_flags2 |= OPTION_MASK_ISA2_CMPCCXADD_SET;
+	  opts->x_ix86_isa_flags2_explicit |= OPTION_MASK_ISA2_CMPCCXADD_SET;
+	}
+      else
+	{
+	  opts->x_ix86_isa_flags2 &= ~OPTION_MASK_ISA2_CMPCCXADD_UNSET;
+	  opts->x_ix86_isa_flags2_explicit |= OPTION_MASK_ISA2_CMPCCXADD_UNSET;
+	}
+      return true;
+
     case OPT_mfma:
       if (value)
 	{
diff --git a/gcc/common/config/i386/i386-cpuinfo.h b/gcc/common/config/i386/i386-cpuinfo.h
index 2d3fbfc817a..5a61d817007 100644
--- a/gcc/common/config/i386/i386-cpuinfo.h
+++ b/gcc/common/config/i386/i386-cpuinfo.h
@@ -243,6 +243,7 @@ enum processor_features
   FEATURE_AVXIFMA,
   FEATURE_AVXVNNIINT8,
   FEATURE_AVXNECONVERT,
+  FEATURE_CMPCCXADD,
   CPU_FEATURE_MAX
 };
 
diff --git a/gcc/common/config/i386/i386-isas.h b/gcc/common/config/i386/i386-isas.h
index bceaee589ee..3035e4a8186 100644
--- a/gcc/common/config/i386/i386-isas.h
+++ b/gcc/common/config/i386/i386-isas.h
@@ -180,4 +180,5 @@ ISA_NAMES_TABLE_START
 			P_NONE, "-mavxvnniint8")
   ISA_NAMES_TABLE_ENTRY("avxneconvert", FEATURE_AVXNECONVERT,
 			P_NONE, "-mavxneconvert")
+  ISA_NAMES_TABLE_ENTRY("cmpccxadd", FEATURE_CMPCCXADD, P_NONE, "-mcmpccxadd")
 ISA_NAMES_TABLE_END
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 840b62aee61..fe063bfbb26 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -422,7 +422,8 @@ i[34567]86-*-* | x86_64-*-*)
 		       amxbf16intrin.h x86gprintrin.h uintrintrin.h
 		       hresetintrin.h keylockerintrin.h avxvnniintrin.h
 		       mwaitintrin.h avx512fp16intrin.h avx512fp16vlintrin.h
-		       avxifmaintrin.h avxvnniint8intrin.h avxneconvertintrin.h"
+		       avxifmaintrin.h avxvnniint8intrin.h avxneconvertintrin.h
+		       cmpccxaddintrin.h"
 	;;
 ia64-*-*)
 	extra_headers=ia64intrin.h
diff --git a/gcc/config/i386/cmpccxaddintrin.h b/gcc/config/i386/cmpccxaddintrin.h
new file mode 100644
index 00000000000..74ae015476d
--- /dev/null
+++ b/gcc/config/i386/cmpccxaddintrin.h
@@ -0,0 +1,89 @@
+/* Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _X86GPRINTRIN_H_INCLUDED
+#error "Never use <cmpccxaddintrin.h> directly; include <x86gprintrin.h> instead."
+#endif
+
+#ifndef _CMPCCXADDINTRIN_H_INCLUDED
+#define _CMPCCXADDINTRIN_H_INCLUDED
+
+#ifdef __x86_64__
+
+#ifndef __CMPCCXADD__
+#pragma GCC push_options
+#pragma GCC target("cmpccxadd")
+#define __DISABLE_CMPCCXADD__
+#endif /* __CMPCCXADD__ */
+
+typedef enum {
+    _CMPCCX_BE,      /* Below or equal.  */
+    _CMPCCX_B,       /* Below.  */
+    _CMPCCX_LE,      /* Less or equal.  */
+    _CMPCCX_L,       /* Less.  */
+    _CMPCCX_NBE,     /* Neither below nor equal.  */
+    _CMPCCX_NB,      /* Not below.  */
+    _CMPCCX_NLE,     /* Neither less nor equal.  */
+    _CMPCCX_NL,      /* Not less.  */
+    _CMPCCX_NO,      /* No overflow.  */
+    _CMPCCX_NP,      /* No parity.  */
+    _CMPCCX_NS,      /* No sign.  */
+    _CMPCCX_NZ,      /* Not zero.  */
+    _CMPCCX_O,       /* Overflow.  */
+    _CMPCCX_P,       /* Parity.  */
+    _CMPCCX_S,       /* Sign.  */
+    _CMPCCX_Z,       /* Zero.  */
+} _CMPCCX_ENUM;
+
+#ifdef __OPTIMIZE__
+extern __inline int
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+__cmpccxadd_epi32 (int *__A, int __B, int __C, const _CMPCCX_ENUM __D)
+{
+  return __builtin_ia32_cmpccxadd (__A, __B, __C, __D);
+}
+
+extern __inline long long
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+__cmpccxadd_epi64 (long long *__A, long long __B, long long __C,
+		   const _CMPCCX_ENUM __D)
+{
+  return __builtin_ia32_cmpccxadd64 (__A, __B, __C, __D);
+}
+#else
+#define __cmpccxadd_epi32(A,B,C,D) \
+__builtin_ia32_cmpccxadd((int *) (A), (int) (B), (int) (C), \
+			 (_CMPCCX_ENUM)(D))
+#define __cmpccxadd_epi64(A,B,C,D) \
+__builtin_ia32_cmpccxadd64((int*) (A), (int) (B), (int) (C), \
+			   (_CMPCCX_ENUM)(D))
+#endif
+
+#ifdef __DISABLE_CMPCCXADD__
+#undef __DISABLE_CMPCCXADD__
+#pragma GCC pop_options
+#endif /* __DISABLE_CMPCCXADD__ */
+
+#endif
+
+#endif /* _CMPCCXADDINTRIN_H_INCLUDED */
diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index 18bbc0cb7be..19c0d033921 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -27,6 +27,7 @@
 /* %eax */
 #define bit_AVXVNNI	(1 << 4)
 #define bit_AVX512BF16	(1 << 5)
+#define bit_CMPCCXADD	(1 << 7)
 #define bit_HRESET	(1 << 22)
 #define bit_AVXIFMA	(1 << 23)
 
diff --git a/gcc/config/i386/i386-builtin-types.def b/gcc/config/i386/i386-builtin-types.def
index ebf6e5b4ad8..922348fcd60 100644
--- a/gcc/config/i386/i386-builtin-types.def
+++ b/gcc/config/i386/i386-builtin-types.def
@@ -1406,3 +1406,7 @@ DEF_FUNCTION_TYPE (V8BF, V8SF)
 DEF_FUNCTION_TYPE (V8BF, V4SF)
 DEF_FUNCTION_TYPE (V4SF, PCV8BF)
 DEF_FUNCTION_TYPE (V8SF, PCV16BF)
+
+# CMPccXADD builtins
+DEF_FUNCTION_TYPE (INT, PINT, INT, INT, INT)
+DEF_FUNCTION_TYPE (LONGLONG, PLONGLONG, LONGLONG, LONGLONG, INT)
diff --git a/gcc/config/i386/i386-builtin.def b/gcc/config/i386/i386-builtin.def
index a429577180c..d4d4fda1d4a 100644
--- a/gcc/config/i386/i386-builtin.def
+++ b/gcc/config/i386/i386-builtin.def
@@ -288,6 +288,10 @@ BDESC (0, OPTION_MASK_ISA2_AVXNECONVERT, CODE_FOR_vcvtneobf162ps_v8sf, "__builti
 BDESC (0, OPTION_MASK_ISA2_AVXNECONVERT, CODE_FOR_vcvtneoph2ps_v4sf, "__builtin_ia32_vcvtneoph2ps128", IX86_BUILTIN_VCVTNEOPH2PS128, UNKNOWN, (int) V4SF_FTYPE_PCV8HF)
 BDESC (0, OPTION_MASK_ISA2_AVXNECONVERT, CODE_FOR_vcvtneoph2ps_v8sf, "__builtin_ia32_vcvtneoph2ps256", IX86_BUILTIN_VCVTNEOPH2PS256, UNKNOWN, (int) V8SF_FTYPE_PCV16HF)
 
+/* CMPCCXADD */
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_CMPCCXADD, CODE_FOR_cmpccxadd_si, "__builtin_ia32_cmpccxadd", IX86_BUILTIN_CMPCCXADD, UNKNOWN, (int) INT_FTYPE_PINT_INT_INT_INT)
+BDESC (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_CMPCCXADD, CODE_FOR_cmpccxadd_di, "__builtin_ia32_cmpccxadd64", IX86_BUILTIN_CMPCCXADD64, UNKNOWN, (int) LONGLONG_FTYPE_PLONGLONG_LONGLONG_LONGLONG_INT)
+
 /* AVX512BW */
 BDESC (OPTION_MASK_ISA_AVX512BW, 0, CODE_FOR_avx512bw_loadv32hi_mask, "__builtin_ia32_loaddquhi512_mask", IX86_BUILTIN_LOADDQUHI512_MASK, UNKNOWN, (int) V32HI_FTYPE_PCSHORT_V32HI_USI)
 BDESC (OPTION_MASK_ISA_AVX512BW, 0, CODE_FOR_avx512bw_loadv64qi_mask, "__builtin_ia32_loaddquqi512_mask", IX86_BUILTIN_LOADDQUQI512_MASK, UNKNOWN, (int) V64QI_FTYPE_PCCHAR_V64QI_UDI)
diff --git a/gcc/config/i386/i386-c.cc b/gcc/config/i386/i386-c.cc
index 48934df664c..9885a724d0f 100644
--- a/gcc/config/i386/i386-c.cc
+++ b/gcc/config/i386/i386-c.cc
@@ -639,6 +639,8 @@ ix86_target_macros_internal (HOST_WIDE_INT isa_flag,
     def_or_undef (parse_in, "__AVXVNNIINT8__");
   if (isa_flag2 & OPTION_MASK_ISA2_AVXNECONVERT)
     def_or_undef (parse_in, "__AVXNECONVERT__");
+  if (isa_flag2 & OPTION_MASK_ISA2_CMPCCXADD)
+    def_or_undef (parse_in, "__CMPCCXADD__");
   if (TARGET_IAMCU)
     {
       def_or_undef (parse_in, "__iamcu");
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 1e29fe584af..cad2eb728fd 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -11825,8 +11825,9 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
   tree arg;
   rtx pat, op;
   unsigned int i, nargs, arg_adjust, memory;
+  unsigned int constant = 100;
   bool aligned_mem = false;
-  rtx xops[3];
+  rtx xops[4];
   enum insn_code icode = d->icode;
   const struct insn_data_d *insn_p = &insn_data[icode];
   machine_mode tmode = insn_p->operand[0].mode;
@@ -12115,6 +12116,13 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
       klass = load;
       memory = 0;
       break;
+    case INT_FTYPE_PINT_INT_INT_INT:
+    case LONGLONG_FTYPE_PLONGLONG_LONGLONG_LONGLONG_INT:
+      nargs = 4;
+      klass = load;
+      memory = 0;
+      constant = 3;
+      break;
     default:
       gcc_unreachable ();
     }
@@ -12180,6 +12188,15 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
 	  if (MEM_ALIGN (op) < align)
 	    set_mem_align (op, align);
 	}
+      else if (i == constant)
+	{
+	  /* This must be the constant.  */
+	  if (!insn_p->operand[nargs].predicate(op, SImode))
+	    {
+	      error ("the fourth argument must be one of enum %qs", "_CMPCCX_ENUM");
+	      return const0_rtx;
+	    }
+	}
       else
 	{
 	  /* This must be register.  */
@@ -12221,6 +12238,9 @@ ix86_expand_special_args_builtin (const struct builtin_description *d,
     case 3:
       pat = GEN_FCN (icode) (target, xops[0], xops[1], xops[2]);
       break;
+    case 4:
+      pat = GEN_FCN (icode) (target, xops[0], xops[1], xops[2], xops[3]);
+      break;
     default:
       gcc_unreachable ();
     }
diff --git a/gcc/config/i386/i386-isa.def b/gcc/config/i386/i386-isa.def
index 4ea3f96f69f..7ffc73ba23e 100644
--- a/gcc/config/i386/i386-isa.def
+++ b/gcc/config/i386/i386-isa.def
@@ -112,3 +112,4 @@ DEF_PTA(AVX512FP16)
 DEF_PTA(AVXIFMA)
 DEF_PTA(AVXVNNIINT8)
 DEF_PTA(AVXNECONVERT)
+DEF_PTA(CMPCCXADD)
diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
index e59e2d8aeaf..fb872afdfb5 100644
--- a/gcc/config/i386/i386-options.cc
+++ b/gcc/config/i386/i386-options.cc
@@ -229,7 +229,8 @@ static struct ix86_target_opts isa2_opts[] =
   { "-mavx512fp16",	OPTION_MASK_ISA2_AVX512FP16 },
   { "-mavxifma",	OPTION_MASK_ISA2_AVXIFMA },
   { "-mavxvnniint8",	OPTION_MASK_ISA2_AVXVNNIINT8 },
-  { "-mavxneconvert",   OPTION_MASK_ISA2_AVXNECONVERT }
+  { "-mavxneconvert",   OPTION_MASK_ISA2_AVXNECONVERT },
+  { "-mcmpccxadd",      OPTION_MASK_ISA2_CMPCCXADD }
 };
 static struct ix86_target_opts isa_opts[] =
 {
@@ -1078,6 +1079,7 @@ ix86_valid_target_attribute_inner_p (tree fndecl, tree args, char *p_strings[],
     IX86_ATTR_ISA ("avxifma", OPT_mavxifma),
     IX86_ATTR_ISA ("avxvnniint8", OPT_mavxvnniint8),
     IX86_ATTR_ISA ("avxneconvert",   OPT_mavxneconvert),
+    IX86_ATTR_ISA ("cmpccxadd",   OPT_mcmpccxadd),
 
     /* enum options */
     IX86_ATTR_ENUM ("fpmath=",	OPT_mfpmath_),
diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt
index 6e07b89ac4c..c4a3bdcf960 100644
--- a/gcc/config/i386/i386.opt
+++ b/gcc/config/i386/i386.opt
@@ -1229,3 +1229,8 @@ mavxneconvert
 Target Mask(ISA2_AVXNECONVERT) Var(ix86_isa_flags2) Save
 Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, and
 AVXNECONVERT build-in functions and code generation.
+
+mcmpccxadd
+Target Mask(ISA2_CMPCCXADD) Var(ix86_isa_flags2) Save
+Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, and
+CMPCCXADD build-in functions and code generation.
diff --git a/gcc/config/i386/sync.md b/gcc/config/i386/sync.md
index 92634d538cb..2b6f2f4c826 100644
--- a/gcc/config/i386/sync.md
+++ b/gcc/config/i386/sync.md
@@ -37,6 +37,9 @@
   UNSPECV_CMPXCHG
   UNSPECV_XCHG
   UNSPECV_LOCK
+  
+  ;; For CMPccXADD support
+  UNSPECV_CMPCCXADD
 ])
 
 (define_expand "sse2_lfence"
@@ -1061,3 +1064,42 @@
 	(any_logic:SWI (match_dup 0) (match_dup 1)))]
   ""
   "lock{%;} %K2<logic>{<imodesuffix>}\t{%1, %0|%0, %1}")
+
+;; CMPCCXADD
+
+(define_insn "@cmpccxadd_<mode>_1"
+  [(set (match_operand:SWI48x 1 "register_operand" "+r")
+	(match_operand:SWI48x 0 "memory_operand" "+m"))
+   (set (match_dup 0)
+	(unspec_volatile:SWI48x
+	  [(match_dup 0)
+	   (match_dup 1)
+	   (match_operand:SWI48x 2 "register_operand" "r")
+	   (match_operand:SI 3 "const_0_to_15_operand" "n")]
+	  UNSPECV_CMPCCXADD))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_CMPCCXADD && TARGET_64BIT"
+{
+  char buf[128];
+  const char *ops = "cmp%sxadd\t{%%2, %%1, %%0|%%0, %%1, %%2}";
+  char const *cc[16] = {"be" ,"b", "le", "l", "nbe", "nb", "nle", "nl",
+			"no", "np", "ns", "nz", "o", "p", "s", "z"};
+
+  snprintf (buf, sizeof (buf), ops, cc[INTVAL (operands[3])]);
+  output_asm_insn (buf, operands);
+  return "";
+})
+
+(define_expand "cmpccxadd_<mode>"
+  [(match_operand:SWI48x 0 "register_operand")
+   (match_operand:SWI48x 1 "memory_operand")
+   (match_operand:SWI48x 2 "register_operand")
+   (match_operand:SWI48x 3 "register_operand")
+   (match_operand:SI 4 "const_0_to_15_operand")]
+ "TARGET_CMPCCXADD && TARGET_64BIT"
+{
+  emit_insn (gen_cmpccxadd_1 (<MODE>mode, operands[1], operands[2],
+			      operands[3], operands[4]));
+  emit_move_insn (operands[0], operands[2]);
+  DONE;
+})
diff --git a/gcc/config/i386/x86gprintrin.h b/gcc/config/i386/x86gprintrin.h
index e0be01d5e78..a84fbe9137d 100644
--- a/gcc/config/i386/x86gprintrin.h
+++ b/gcc/config/i386/x86gprintrin.h
@@ -52,6 +52,8 @@
 
 #include <clzerointrin.h>
 
+#include <cmpccxaddintrin.h>
+
 #include <enqcmdintrin.h>
 
 #include <fxsrintrin.h>
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 0a4396f92bb..34c23240dfb 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -7075,6 +7075,11 @@ Enable/disable the generation of the AVXVNNIINT8 instructions.
 @cindex @code{target("avxneconvert")} function attribute, x86
 Enable/disable the generation of the AVXNECONVERT instructions.
 
+@item cmpccxadd
+@itemx no-cmpccxadd
+@cindex @code{target("cmpccxadd")} function attribute, x86
+Enable/disable the generation of the CMPccXADD instructions.
+
 @item cld
 @itemx no-cld
 @cindex @code{target("cld")} function attribute, x86
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 307fb7fa441..cbbc0201828 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1436,7 +1436,7 @@ See RS/6000 and PowerPC Options.
 -mavx5124fmaps  -mavx512vnni  -mavx5124vnniw  -mprfchw  -mrdpid @gol
 -mrdseed  -msgx -mavx512vp2intersect -mserialize -mtsxldtrk@gol
 -mamx-tile  -mamx-int8  -mamx-bf16 -muintr -mhreset -mavxvnni@gol
--mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert @gol
+-mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert -mcmpccxadd @gol
 -mcldemote  -mms-bitfields  -mno-align-stringops  -minline-all-stringops @gol
 -minline-stringops-dynamically  -mstringop-strategy=@var{alg} @gol
 -mkl -mwidekl @gol
@@ -32902,6 +32902,9 @@ preferred alignment to @option{-mpreferred-stack-boundary=2}.
 @need 200
 @itemx -mavxneconvert
 @opindex mavxneconvert
+@need 200
+@itemx -mcmpccxadd
+@opindex mcmpccxadd
 These switches enable the use of instructions in the MMX, SSE,
 SSE2, SSE3, SSSE3, SSE4, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX512F, AVX512PF,
 AVX512ER, AVX512CD, AVX512VL, AVX512BW, AVX512DQ, AVX512IFMA, AVX512VBMI, SHA,
@@ -32912,8 +32915,9 @@ XSAVEOPT, XSAVEC, XSAVES, RTM, HLE, TBM, MWAITX, CLZERO, PKU, AVX512VBMI2,
 GFNI, VAES, WAITPKG, VPCLMULQDQ, AVX512BITALG, MOVDIRI, MOVDIR64B, AVX512BF16,
 ENQCMD, AVX512VPOPCNTDQ, AVX5124FMAPS, AVX512VNNI, AVX5124VNNIW, SERIALIZE,
 UINTR, HRESET, AMXTILE, AMXINT8, AMXBF16, KL, WIDEKL, AVXVNNI, AVX512FP16,
-AVXIFMA, AVXVNNIINT8, AVXNECONVERT or CLDEMOTE extended instruction sets. Each
-has a corresponding @option{-mno-} option to disable use of these instructions.
+AVXIFMA, AVXVNNIINT8, AVXNECONVERT, CMPCCXADD or CLDEMOTE extended instruction
+sets. Each has a corresponding @option{-mno-} option to disable use of these
+instructions.
 
 These extensions are also available as built-in functions: see
 @ref{x86 Built-in Functions}, for details of the functions enabled and
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index a12175b6498..714595d33bf 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2511,6 +2511,9 @@ Target supports the execution of @code{amx-bf16} instructions.
 @item cell_hw
 Test system can execute AltiVec and Cell PPU instructions.
 
+@item cmpccxadd
+Target supports the execution of @code{cmpccxadd} instructions.
+
 @item coldfire_fpu
 Target uses a ColdFire FPU.
 
diff --git a/gcc/testsuite/g++.dg/other/i386-2.C b/gcc/testsuite/g++.dg/other/i386-2.C
index dd3e71f25ed..f7dbbbbf619 100644
--- a/gcc/testsuite/g++.dg/other/i386-2.C
+++ b/gcc/testsuite/g++.dg/other/i386-2.C
@@ -1,5 +1,5 @@
 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
-/* { dg-options "-O -pedantic-errors -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt  -mavx512dq -mavx512bw -mavx512vl -mavx512ifma -mavx512vbmi -mavx512vbmi2 -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mavx512vp2intersect -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert" } */
+/* { dg-options "-O -pedantic-errors -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt  -mavx512dq -mavx512bw -mavx512vl -mavx512ifma -mavx512vbmi -mavx512vbmi2 -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mavx512vp2intersect -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert -mcmpccxadd" } */
 
 /* Test that {,x,e,p,t,s,w,a,b,i}mmintrin.h, mm3dnow.h, fma4intrin.h,
    xopintrin.h, abmintrin.h, bmiintrin.h, tbmintrin.h, lwpintrin.h,
diff --git a/gcc/testsuite/g++.dg/other/i386-3.C b/gcc/testsuite/g++.dg/other/i386-3.C
index cd7045cc4e4..2ac5d9f2df5 100644
--- a/gcc/testsuite/g++.dg/other/i386-3.C
+++ b/gcc/testsuite/g++.dg/other/i386-3.C
@@ -1,5 +1,5 @@
 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
-/* { dg-options "-O -fkeep-inline-functions -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt -mavx512dq -mavx512bw -mavx512vl -mavx512ifma -mavx512vbmi -mavx512vbmi2 -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mavx512vp2intersect -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert" } */
+/* { dg-options "-O -fkeep-inline-functions -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt -mavx512dq -mavx512bw -mavx512vl -mavx512ifma -mavx512vbmi -mavx512vbmi2 -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mavx512vp2intersect -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert -mcmpccxadd" } */
 
 /* Test that {,x,e,p,t,s,w,a,b,i}mmintrin.h, mm3dnow.h, fma4intrin.h,
    xopintrin.h, abmintrin.h, bmiintrin.h, tbmintrin.h, lwpintrin.h,
diff --git a/gcc/testsuite/gcc.target/i386/avx-1.c b/gcc/testsuite/gcc.target/i386/avx-1.c
index 154e7b3b107..051a1b59b5b 100644
--- a/gcc/testsuite/gcc.target/i386/avx-1.c
+++ b/gcc/testsuite/gcc.target/i386/avx-1.c
@@ -835,6 +835,10 @@
 #define __builtin_ia32_bextri_u32(X, Y) __builtin_ia32_bextri_u32 (X, 1)
 #define __builtin_ia32_bextri_u64(X, Y) __builtin_ia32_bextri_u64 (X, 1)
 
+/* cmpccxadd.h */
+#define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B, C, 1)
+#define __builtin_ia32_cmpccxadd64(A, B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
+
 #include <wmmintrin.h>
 #include <immintrin.h>
 #include <mm3dnow.h>
diff --git a/gcc/testsuite/gcc.target/i386/cmpccxadd-1.c b/gcc/testsuite/gcc.target/i386/cmpccxadd-1.c
new file mode 100644
index 00000000000..699ed9b2dc2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/cmpccxadd-1.c
@@ -0,0 +1,61 @@
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -mcmpccxadd" } */
+/* { dg-final { scan-assembler-times "cmpbexadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpbxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmplexadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmplxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnbexadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnbxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnlexadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnlxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnoxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnpxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnsxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpnzxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpoxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmppxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpsxadd\[ \\t\]" 2 } } */
+/* { dg-final { scan-assembler-times "cmpzxadd\[ \\t\]" 2 } } */
+#include <x86gprintrin.h>
+
+int *a;
+int b, c;
+long long *d;
+long long e, f;
+
+void extern
+cmpccxadd_test(void)
+{
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_BE);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_BE);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_B);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_B);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_LE);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_LE);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_L);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_L);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NBE);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NBE);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NB);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NB);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NLE);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NLE);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NL);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NL);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NO);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NO);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NP);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NP);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NS);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NS);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_NZ);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_NZ);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_O);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_O);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_P);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_P);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_S);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_S);
+  b = __cmpccxadd_epi32 (a, b, c, _CMPCCX_Z);
+  e = __cmpccxadd_epi64 (d, e, f, _CMPCCX_Z);
+}
diff --git a/gcc/testsuite/gcc.target/i386/cmpccxadd-2.c b/gcc/testsuite/gcc.target/i386/cmpccxadd-2.c
new file mode 100644
index 00000000000..76d17803fbb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/cmpccxadd-2.c
@@ -0,0 +1,138 @@
+/* { dg-do run { target { ! ia32 } } } */
+/* { dg-options "-O2 -mcmpccxadd" } */
+/* { dg-require-effective-target cmpccxadd } */
+
+#include <stdlib.h>
+#include <x86gprintrin.h>
+
+int
+main()
+{
+  if (!__builtin_cpu_supports("cmpccxadd"))
+    return 0;
+	
+  int srcdest1[16] = { 1,1,1,1,2,1,2,1,1,2,2,2,-2147483648,4,1,1 };
+  int srcdest2[16] = { 1,2,1,2,1,1,1,1,1,1,1,1,1,1,2,1 };
+  int src3[16] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 };
+  int _srcdest1[16], _srcdest2[16], res[16], cond[16];
+  long long srcdest1_64[16] = { 1,1,1,1,2,1,2,1,1,2,2,2,-9223372036854775807LL-1,4,1,1 };
+  long long srcdest2_64[16] = { 1,2,1,2,1,1,1,1,1,1,1,1,1,1,2,1 };
+  long long src3_64[16] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 };
+  long long _srcdest1_64[16], _srcdest2_64[16], res_64[16], cond_64[16];
+
+  int tmp2[16];
+  long long tmp2_64[16];
+
+  int cf[16] = { 0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
+  int of[16] = { 0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0 };
+  int sf[16] = { 0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0 };
+  int zf[16] = { 1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1 };
+  int af[16] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
+  int pf[16] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0 };
+
+  for (int i = 0; i < 16; i++)
+  {
+    tmp2[i] = srcdest1[i] + src3[i];
+    tmp2_64[i] = srcdest1_64[i] + src3_64[i];
+  }
+
+  cond[0] = (cf[0] || zf[0]) == 1 ? 1 : 0;
+  cond[1] = cf[1] == 1 ? 1 : 0;
+  cond[2] = (((sf[2] && !of[2]) || (!sf[2] && of[2])) || zf[2]) == 1 ? 1 : 0;
+  cond[3] = ((sf[3] && !of[3]) || (!sf[3] && of[3])) == 1 ? 1 : 0;
+  cond[4] = (cf[4] || zf[4]) == 0 ? 1 : 0;
+  cond[5] = cf[5] == 0 ? 1 : 0;
+  cond[6] = (((sf[6] && !of[6]) || (!sf[6] && of[6])) || zf[6]) == 0 ? 1 : 0;
+  cond[7] = ((sf[7] && !of[7]) || (!sf[7] && of[7])) == 0 ? 1 : 0;
+  cond[8] = of[8] == 0 ? 1 : 0;
+  cond[9] = pf[9] == 0 ? 1 : 0;
+  cond[10] = sf[10] == 0 ? 1 : 0;
+  cond[11] = zf[11] == 0 ? 1 : 0;
+  cond[12] = of[12] == 1 ? 1 : 0;
+  cond[13] = pf[13] == 1 ? 1 : 0;
+  cond[14] = sf[14] == 1 ? 1 : 0;
+  cond[15] = zf[15] == 1 ? 1 : 0;
+
+  cond_64[0] = (cf[0] || zf[0]) == 1 ? 1 : 0;
+  cond_64[1] = cf[1] == 1 ? 1 : 0;
+  cond_64[2] = (((sf[2] && !of[2]) || (!sf[2] && of[2])) || zf[2]) == 1 ? 1 : 0;
+  cond_64[3] = ((sf[3] && !of[3]) || (!sf[3] && of[3])) == 1 ? 1 : 0;
+  cond_64[4] = (cf[4] || zf[4]) == 0 ? 1 : 0;
+  cond_64[5] = cf[5] == 0 ? 1 : 0;
+  cond_64[6] = (((sf[6] && !of[6]) || (!sf[6] && of[6])) || zf[6]) == 0 ? 1 : 0;
+  cond_64[7] = ((sf[7] && !of[7]) || (!sf[7] && of[7])) == 0 ? 1 : 0;
+  cond_64[8] = of[8] == 0 ? 1 : 0;
+  cond_64[9] = pf[9] == 0 ? 1 : 0;
+  cond_64[10] = sf[10] == 0 ? 1 : 0;
+  cond_64[11] = zf[11] == 0 ? 1 : 0;
+  cond_64[12] = of[12] == 1 ? 1 : 0;
+  cond_64[13] = pf[13] == 1 ? 1 : 0;
+  cond_64[14] = sf[14] == 1 ? 1 : 0;
+  cond_64[15] = zf[15] == 1 ? 1 : 0;
+
+  for (int i = 0; i < 16; i++)
+  {
+    if (cond[i] == 1)
+    {
+      _srcdest1[i] = tmp2[i];
+    }
+    else
+    {
+      _srcdest1[i] = srcdest1[i];
+    }
+    if (cond_64[i] == 1)
+    {
+      _srcdest1_64[i] = tmp2_64[i];
+    }
+    else
+    {
+      _srcdest1_64[i] = srcdest1_64[i];
+    }
+    _srcdest2[i] = srcdest1[i];
+    _srcdest2_64[i] = srcdest1_64[i];
+  }
+
+  res[0] = __cmpccxadd_epi32 (&srcdest1[0], srcdest2[0], src3[0], _CMPCCX_BE);
+  res[1] = __cmpccxadd_epi32 (&srcdest1[1], srcdest2[1], src3[1], _CMPCCX_B);
+  res[2] = __cmpccxadd_epi32 (&srcdest1[2], srcdest2[2], src3[2], _CMPCCX_LE);
+  res[3] = __cmpccxadd_epi32 (&srcdest1[3], srcdest2[3], src3[3], _CMPCCX_L);
+  res[4] = __cmpccxadd_epi32 (&srcdest1[4], srcdest2[4], src3[4], _CMPCCX_NBE);
+  res[5] = __cmpccxadd_epi32 (&srcdest1[5], srcdest2[5], src3[5], _CMPCCX_NB);
+  res[6] = __cmpccxadd_epi32 (&srcdest1[6], srcdest2[6], src3[6], _CMPCCX_NLE);
+  res[7] = __cmpccxadd_epi32 (&srcdest1[7], srcdest2[7], src3[7], _CMPCCX_NL);
+  res[8] = __cmpccxadd_epi32 (&srcdest1[8], srcdest2[8], src3[8], _CMPCCX_NO);
+  res[9] = __cmpccxadd_epi32 (&srcdest1[9], srcdest2[9], src3[9], _CMPCCX_NP);
+  res[10] = __cmpccxadd_epi32 (&srcdest1[10], srcdest2[10], src3[10], _CMPCCX_NS);
+  res[11] = __cmpccxadd_epi32 (&srcdest1[11], srcdest2[11], src3[11], _CMPCCX_NZ);
+  res[12] = __cmpccxadd_epi32 (&srcdest1[12], srcdest2[12], src3[12], _CMPCCX_O);
+  res[13] = __cmpccxadd_epi32 (&srcdest1[13], srcdest2[13], src3[13], _CMPCCX_P);
+  res[14] = __cmpccxadd_epi32 (&srcdest1[14], srcdest2[14], src3[14], _CMPCCX_S);
+  res[15] = __cmpccxadd_epi32 (&srcdest1[15], srcdest2[15], src3[15], _CMPCCX_Z);
+
+  res_64[0] = __cmpccxadd_epi64(&srcdest1_64[0], srcdest2_64[0], src3_64[0], _CMPCCX_BE);
+  res_64[1] = __cmpccxadd_epi64(&srcdest1_64[1], srcdest2_64[1], src3_64[1], _CMPCCX_B);
+  res_64[2] = __cmpccxadd_epi64(&srcdest1_64[2], srcdest2_64[2], src3_64[2], _CMPCCX_LE);
+  res_64[3] = __cmpccxadd_epi64(&srcdest1_64[3], srcdest2_64[3], src3_64[3], _CMPCCX_L);
+  res_64[4] = __cmpccxadd_epi64(&srcdest1_64[4], srcdest2_64[4], src3_64[4], _CMPCCX_NBE);
+  res_64[5] = __cmpccxadd_epi64(&srcdest1_64[5], srcdest2_64[5], src3_64[5], _CMPCCX_NB);
+  res_64[6] = __cmpccxadd_epi64(&srcdest1_64[6], srcdest2_64[6], src3_64[6], _CMPCCX_NLE);
+  res_64[7] = __cmpccxadd_epi64(&srcdest1_64[7], srcdest2_64[7], src3_64[7], _CMPCCX_NL);
+  res_64[8] = __cmpccxadd_epi64(&srcdest1_64[8], srcdest2_64[8], src3_64[8], _CMPCCX_NO);
+  res_64[9] = __cmpccxadd_epi64(&srcdest1_64[9], srcdest2_64[9], src3_64[9], _CMPCCX_NP);
+  res_64[10] = __cmpccxadd_epi64(&srcdest1_64[10], srcdest2_64[10], src3_64[10], _CMPCCX_NS);
+  res_64[11] = __cmpccxadd_epi64(&srcdest1_64[11], srcdest2_64[11], src3_64[11], _CMPCCX_NZ);
+  res_64[12] = __cmpccxadd_epi64(&srcdest1_64[12], srcdest2_64[12], src3_64[12], _CMPCCX_O);
+  res_64[13] = __cmpccxadd_epi64(&srcdest1_64[13], srcdest2_64[13], src3_64[13], _CMPCCX_P);
+  res_64[14] = __cmpccxadd_epi64(&srcdest1_64[14], srcdest2_64[14], src3_64[14], _CMPCCX_S);
+  res_64[15] = __cmpccxadd_epi64(&srcdest1_64[15], srcdest2_64[15], src3_64[15], _CMPCCX_Z);
+  
+  for (int i = 0; i < 16; i++)
+  {
+    if ((srcdest1[i] != _srcdest1[i]) || (res[i] != _srcdest2[i]))
+      abort();
+    if ((srcdest1_64[i] != _srcdest1_64[i]) || (res_64[i] != _srcdest2_64[i]))
+      abort();
+  }
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/i386/funcspec-56.inc b/gcc/testsuite/gcc.target/i386/funcspec-56.inc
index b3d33df7c9c..2e35a7ae50e 100644
--- a/gcc/testsuite/gcc.target/i386/funcspec-56.inc
+++ b/gcc/testsuite/gcc.target/i386/funcspec-56.inc
@@ -83,6 +83,7 @@ extern void test_avx512fp16 (void)		__attribute__((__target__("avx512fp16")));
 extern void test_avxifma (void)			__attribute__((__target__("avxifma")));
 extern void test_avxvnniint8 (void)		__attribute__((__target__("avxvnniint8")));
 extern void test_avxneconvert (void)		__attribute__((__target__("avxneconvert")));
+extern void test_cmpccxadd (void)		__attribute__((__target__("cmpccxadd")));
 
 extern void test_no_sgx (void)			__attribute__((__target__("no-sgx")));
 extern void test_no_avx5124fmaps(void)		__attribute__((__target__("no-avx5124fmaps")));
@@ -167,6 +168,7 @@ extern void test_no_avx512fp16 (void)		__attribute__((__target__("no-avx512fp16"
 extern void test_no_avxifma (void)		__attribute__((__target__("no-avxifma")));
 extern void test_no_avxvnniint8 (void)		__attribute__((__target__("no-avxvnniint8")));
 extern void test_no_avxneconvert (void)		__attribute__((__target__("no-avxneconvert")));
+extern void test_no_cmpccxadd (void)            __attribute__((__target__("no-cmpccxadd")));
 
 extern void test_arch_nocona (void)		__attribute__((__target__("arch=nocona")));
 extern void test_arch_core2 (void)		__attribute__((__target__("arch=core2")));
diff --git a/gcc/testsuite/gcc.target/i386/sse-13.c b/gcc/testsuite/gcc.target/i386/sse-13.c
index b9cdfb690d1..e947b4347f4 100644
--- a/gcc/testsuite/gcc.target/i386/sse-13.c
+++ b/gcc/testsuite/gcc.target/i386/sse-13.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -Werror-implicit-function-declaration -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt -mavx512vl -mavx512dq -mavx512bw -mavx512vbmi -mavx512vbmi2 -mavx512ifma -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mavx512vp2intersect -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert" } */
+/* { dg-options "-O2 -Werror-implicit-function-declaration -march=k8 -msse4a -m3dnow -mavx -mavx2 -mfma4 -mxop -maes -mpclmul -mpopcnt -mabm -mlzcnt -mbmi -mbmi2 -mtbm -mlwp -mfsgsbase -mrdrnd -mf16c -mfma -mrtm -mrdseed -mprfchw -madx -mfxsr -mxsaveopt -mavx512f -mavx512er -mavx512cd -mavx512pf -msha -mprefetchwt1 -mxsavec -mxsaves -mclflushopt -mavx512vl -mavx512dq -mavx512bw -mavx512vbmi -mavx512vbmi2 -mavx512ifma -mavx5124fmaps -mavx5124vnniw -mavx512vpopcntdq -mavx512vp2intersect -mclwb -mmwaitx -mclzero -mpku -msgx -mrdpid -mgfni -mavx512bitalg -mpconfig -mwbnoinvd -mavx512bf16 -menqcmd -mserialize -mtsxldtrk -mamx-tile -mamx-int8 -mamx-bf16 -mkl -mwidekl -mavxvnni -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert -mcmpccxadd" } */
 /* { dg-add-options bind_pic_locally } */
 
 #include <mm_malloc.h>
@@ -842,4 +842,8 @@
 #define __builtin_ia32_vpclmulqdq_v2di(A, B, C)  __builtin_ia32_vpclmulqdq_v2di(A, B, 1) 
 #define __builtin_ia32_vpclmulqdq_v8di(A, B, C)  __builtin_ia32_vpclmulqdq_v8di(A, B, 1) 
 
+/* cmpccxadd.h */
+#define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B, C, 1)
+#define __builtin_ia32_cmpccxadd64(A, B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
+
 #include <x86intrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/sse-23.c b/gcc/testsuite/gcc.target/i386/sse-23.c
index 898dde80c8f..757ba9c9a7d 100644
--- a/gcc/testsuite/gcc.target/i386/sse-23.c
+++ b/gcc/testsuite/gcc.target/i386/sse-23.c
@@ -843,6 +843,10 @@
 #define __builtin_ia32_vpclmulqdq_v2di(A, B, C)  __builtin_ia32_vpclmulqdq_v2di(A, B, 1) 
 #define __builtin_ia32_vpclmulqdq_v8di(A, B, C)  __builtin_ia32_vpclmulqdq_v8di(A, B, 1) 
 
-#pragma GCC target ("sse4a,3dnow,avx,avx2,fma4,xop,aes,pclmul,popcnt,abm,lzcnt,bmi,bmi2,tbm,lwp,fsgsbase,rdrnd,f16c,fma,rtm,rdseed,prfchw,adx,fxsr,xsaveopt,avx512f,avx512er,avx512cd,avx512pf,sha,prefetchwt1,xsavec,xsaves,clflushopt,avx512bw,avx512dq,avx512vl,avx512vbmi,avx512ifma,avx5124fmaps,avx5124vnniw,avx512vpopcntdq,clwb,mwaitx,clzero,pku,sgx,rdpid,gfni,avx512vbmi2,vpclmulqdq,avx512bitalg,pconfig,wbnoinvd,avx512bf16,enqcmd,avx512vp2intersect,serialize,tsxldtrk,amx-tile,amx-int8,amx-bf16,kl,widekl,avxvnni,avx512fp16,avxifma,avxvnniint8,avxneconvert")
+/* cmpccxadd.h */
+#define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B, C, 1)
+#define __builtin_ia32_cmpccxadd64(A, B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
+
+#pragma GCC target ("sse4a,3dnow,avx,avx2,fma4,xop,aes,pclmul,popcnt,abm,lzcnt,bmi,bmi2,tbm,lwp,fsgsbase,rdrnd,f16c,fma,rtm,rdseed,prfchw,adx,fxsr,xsaveopt,avx512f,avx512er,avx512cd,avx512pf,sha,prefetchwt1,xsavec,xsaves,clflushopt,avx512bw,avx512dq,avx512vl,avx512vbmi,avx512ifma,avx5124fmaps,avx5124vnniw,avx512vpopcntdq,clwb,mwaitx,clzero,pku,sgx,rdpid,gfni,avx512vbmi2,vpclmulqdq,avx512bitalg,pconfig,wbnoinvd,avx512bf16,enqcmd,avx512vp2intersect,serialize,tsxldtrk,amx-tile,amx-int8,amx-bf16,kl,widekl,avxvnni,avx512fp16,avxifma,avxvnniint8,avxneconvert,cmpccxadd")
 
 #include <x86intrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c b/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
index 293be094b78..76de89d0cb7 100644
--- a/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
+++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
@@ -1,7 +1,7 @@
 /* Test that <x86gprintrin.h> is usable with -O -std=c89 -pedantic-errors.  */
 /* { dg-do compile } */
 /* { dg-options "-O -std=c89 -pedantic-errors -march=x86-64 -madx -mbmi -mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -mfsgsbase -mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -mpopcnt -mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -msgx -mshstk -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -mxsaveopt -mxsaves -mno-sse -mno-mmx" } */
-/* { dg-additional-options "-muintr" { target { ! ia32 } } }  */
+/* { dg-additional-options "-mcmpccxadd -muintr" { target { ! ia32 } } }  */
 
 #include <x86gprintrin.h>
 
diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c b/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
index c6330275746..aefad77f864 100644
--- a/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
+++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
@@ -1,7 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -Werror-implicit-function-declaration -march=x86-64 -madx -mbmi -mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -mfsgsbase -mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -mpopcnt -mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -msgx -mshstk -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -mxsaveopt -mxsaves -mno-sse -mno-mmx" } */
 /* { dg-add-options bind_pic_locally } */
-/* { dg-additional-options "-muintr" { target { ! ia32 } } }  */
+/* { dg-additional-options "-mcmpccxadd -muintr" { target { ! ia32 } } }  */
 
 /* Test that the intrinsics in <x86gprintrin.h> compile with optimization.
    All of them are defined as inline functions that reference the proper
@@ -28,4 +28,8 @@
 /* rtmintrin.h */
 #define __builtin_ia32_xabort(N) __builtin_ia32_xabort(1)
 
+/* cmpccxadd.h */
+#define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B, C, 1)
+#define __builtin_ia32_cmpccxadd64(A, B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
+
 #include <x86gprintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c b/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
index 3a7e1f4a10d..261c9180aa0 100644
--- a/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
+++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
@@ -1,7 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O0 -Werror-implicit-function-declaration -march=x86-64 -madx -mbmi -mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -mfsgsbase -mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -mpopcnt -mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -msgx -mshstk -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -mxsaveopt -mxsaves -mno-sse -mno-mmx" } */
 /* { dg-add-options bind_pic_locally } */
-/* { dg-additional-options "-muintr" { target { ! ia32 } } }  */
+/* { dg-additional-options "-mcmpccxadd -muintr" { target { ! ia32 } } }  */
 
 /* Test that the intrinsics in <x86gprintrin.h> compile without optimization.
    All of them are defined as inline functions that reference the proper
diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c b/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
index d8a6126e5dc..7f76b870934 100644
--- a/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
+++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
@@ -15,7 +15,7 @@
 
 #ifndef DIFFERENT_PRAGMAS
 #ifdef __x86_64__
-#pragma GCC target ("adx,bmi,bmi2,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,rdrnd,rdseed,tbm,rtm,serialize,tsxldtrk,uintr,xsaveopt")
+#pragma GCC target ("adx,bmi,bmi2,cmpccxadd,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,rdrnd,rdseed,tbm,rtm,serialize,tsxldtrk,uintr,xsaveopt")
 #else
 #pragma GCC target ("adx,bmi,bmi2,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,rdrnd,rdseed,tbm,rtm,serialize,tsxldtrk,xsaveopt")
 #endif
diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c b/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
index 9ef66fdad54..54d826c4f46 100644
--- a/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
+++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
@@ -27,8 +27,12 @@
 /* rtmintrin.h */
 #define __builtin_ia32_xabort(M) __builtin_ia32_xabort(1)
 
+/* cmpccxadd.h */
+#define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B, C, 1)
+#define __builtin_ia32_cmpccxadd64(A, B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
+
 #ifdef __x86_64__
-#pragma GCC target ("adx,bmi,bmi2,clflushopt,clwb,clzero,enqcmd,fsgsbase,fxsr,hreset,lwp,lzcnt,mwaitx,pconfig,pku,popcnt,rdpid,rdrnd,rdseed,tbm,rtm,serialize,sgx,tsxldtrk,uintr,xsavec,xsaveopt,xsaves,wbnoinvd")
+#pragma GCC target ("adx,bmi,bmi2,clflushopt,clwb,clzero,cmpccxadd,enqcmd,fsgsbase,fxsr,hreset,lwp,lzcnt,mwaitx,pconfig,pku,popcnt,rdpid,rdrnd,rdseed,tbm,rtm,serialize,sgx,tsxldtrk,uintr,xsavec,xsaveopt,xsaves,wbnoinvd")
 #else
 #pragma GCC target ("adx,bmi,bmi2,clflushopt,clwb,clzero,enqcmd,fsgsbase,fxsr,hreset,lwp,lzcnt,mwaitx,pconfig,pku,popcnt,rdpid,rdrnd,rdseed,tbm,rtm,serialize,sgx,tsxldtrk,xsavec,xsaveopt,xsaves,wbnoinvd")
 #endif
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 9228e810c45..d3b9aafb8f0 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -9542,6 +9542,16 @@ proc check_effective_target_avxneconvert { } {
     } "-O0 -mavxneconvert" ]
 }
 
+# Return 1 if cmpccxadd instructions can be compiled.
+proc check_effective_target_cmpccxadd { } {
+    return [check_no_compiler_messages cmpccxadd object {
+	int _cmpccxadd_epi32 (int *__A, int __B, int __C, const int __D)
+        {
+	   return (int)__builtin_ia32_cmpccxadd (__A, __B, __C, 1);
+	}
+    } "-mcmpccxadd" ]
+}
+
 # Return 1 if sse instructions can be compiled.
 proc check_effective_target_sse { } {
     return [check_no_compiler_messages sse object {
