2018-05-14 Sebastian Peryt <sebastian.peryt@intel.com>

gcc/

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_CLDEMOTE_SET,
        OPTION_MASK_ISA_CLDEMOTE_UNSET): New defines.
        (ix86_handle_option): Handle -mcldemote.
        * config.gcc: New header.
        * config/i386/cldemoteintrin.h: New file.
        * config/i386/cpuid.h (bit_CLDEMOTE): New bit.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect
        -mcldemote.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        OPTION_MASK_ISA_CLDEMOTE.
        * config/i386/i386.c (ix86_target_string): Add -mcldemote.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (enum ix86_builtins): Add IX86_BUILTIN_CLDEMOTE.
        (ix86_init_mmx_sse_builtins): Define __builtin_ia32_cldemote.
        (ix86_expand_builtin): Expand IX86_BUILTIN_CLDEMOTE.
        * config/i386/i386.h (TARGET_CLDEMOTE, TARGET_CLDEMOTE_P): New.
        * config/i386/i386.md (UNSPECV_CLDEMOTE): New.
        (cldemote): New.
        * config/i386/i386.opt: Add -mcldemote.
        * config/i386/x86intrin.h: New header.
        * doc/invoke.texi: Add -mcldemote.

gcc/testsuite/

        * gcc.target/i386/cldemote-1.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260224 138bc75d-0d04-0410-961f-82ee72b054a4

15 files changed, 155 insertions, 7 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c8bb4c7b3dd4..a2121a995583 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,27 @@
+2018-05-14  Sebastian Peryt  <sebastian.peryt@intel.com>
+
+	* common/config/i386/i386-common.c (OPTION_MASK_ISA_CLDEMOTE_SET,
+	OPTION_MASK_ISA_CLDEMOTE_UNSET): New defines.
+	(ix86_handle_option): Handle -mcldemote.
+	* config.gcc: New header.
+	* config/i386/cldemoteintrin.h: New file.
+	* config/i386/cpuid.h (bit_CLDEMOTE): New bit.
+	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
+	-mcldemote.
+	* config/i386/i386-c.c (ix86_target_macros_internal): Handle
+	OPTION_MASK_ISA_CLDEMOTE.
+	* config/i386/i386.c (ix86_target_string): Add -mcldemote.
+	(ix86_valid_target_attribute_inner_p): Ditto.
+	(enum ix86_builtins): Add IX86_BUILTIN_CLDEMOTE.
+	(ix86_init_mmx_sse_builtins): Define __builtin_ia32_cldemote.
+	(ix86_expand_builtin): Expand IX86_BUILTIN_CLDEMOTE.
+	* config/i386/i386.h (TARGET_CLDEMOTE, TARGET_CLDEMOTE_P): New.
+	* config/i386/i386.md (UNSPECV_CLDEMOTE): New.
+	(cldemote): New.
+	* config/i386/i386.opt: Add -mcldemote.
+	* config/i386/x86intrin.h: New header.
+	* doc/invoke.texi: Add -mcldemote.
+
 2018-05-14  Richard Biener  <rguenther@suse.de>
 
 	* doc/match-and-simplify.texi: Adjust :s documentation.
diff --git a/gcc/common/config/i386/i386-common.c b/gcc/common/config/i386/i386-common.c
index b17646c165ad..3aa32f5934b1 100644
--- a/gcc/common/config/i386/i386-common.c
+++ b/gcc/common/config/i386/i386-common.c
@@ -153,6 +153,7 @@ along with GCC; see the file COPYING3.  If not see
 #define OPTION_MASK_ISA_MOVDIRI_SET OPTION_MASK_ISA_MOVDIRI
 #define OPTION_MASK_ISA_MOVDIR64B_SET OPTION_MASK_ISA_MOVDIR64B
 #define OPTION_MASK_ISA_WAITPKG_SET OPTION_MASK_ISA_WAITPKG
+#define OPTION_MASK_ISA_CLDEMOTE_SET OPTION_MASK_ISA_CLDEMOTE
 
 /* Define a set of ISAs which aren't available when a given ISA is
    disabled.  MMX and SSE ISAs are handled separately.  */
@@ -230,6 +231,7 @@ along with GCC; see the file COPYING3.  If not see
 #define OPTION_MASK_ISA_MOVDIRI_UNSET OPTION_MASK_ISA_MOVDIRI
 #define OPTION_MASK_ISA_MOVDIR64B_UNSET OPTION_MASK_ISA_MOVDIR64B
 #define OPTION_MASK_ISA_WAITPKG_UNSET OPTION_MASK_ISA_WAITPKG
+#define OPTION_MASK_ISA_CLDEMOTE_UNSET OPTION_MASK_ISA_CLDEMOTE
 
 /* SSE4 includes both SSE4.1 and SSE4.2.  -mno-sse4 should the same
    as -mno-sse4.1. */
@@ -608,6 +610,19 @@ ix86_handle_option (struct gcc_options *opts,
 	  opts->x_ix86_isa_flags2 &= ~OPTION_MASK_ISA_MOVDIR64B_UNSET;
 	  opts->x_ix86_isa_flags2_explicit |= OPTION_MASK_ISA_MOVDIR64B_UNSET;
 	}
+	return true;
+
+    case OPT_mcldemote:
+      if (value)
+	{
+	  opts->x_ix86_isa_flags2 |= OPTION_MASK_ISA_CLDEMOTE_SET;
+	  opts->x_ix86_isa_flags2_explicit |= OPTION_MASK_ISA_CLDEMOTE_SET;
+	}
+      else
+	{
+	  opts->x_ix86_isa_flags2 &= ~OPTION_MASK_ISA_CLDEMOTE_UNSET;
+	  opts->x_ix86_isa_flags2_explicit |= OPTION_MASK_ISA_CLDEMOTE_UNSET;
+	}
       return true;
 
     case OPT_mwaitpkg:
diff --git a/gcc/config.gcc b/gcc/config.gcc
index be43a09e8af1..d509800071ba 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -385,7 +385,7 @@ i[34567]86-*-*)
 		       avx512vnnivlintrin.h vaesintrin.h vpclmulqdqintrin.h
 		       avx512vpopcntdqvlintrin.h avx512bitalgintrin.h
 		       pconfigintrin.h wbnoinvdintrin.h movdirintrin.h
-		       waitpkgintrin.h"
+		       waitpkgintrin.h cldemoteintrin.h"
 	;;
 x86_64-*-*)
 	cpu_type=i386
@@ -415,7 +415,7 @@ x86_64-*-*)
 		       avx512vnnivlintrin.h vaesintrin.h vpclmulqdqintrin.h
 		       avx512vpopcntdqvlintrin.h avx512bitalgintrin.h
 		       pconfigintrin.h wbnoinvdintrin.h movdirintrin.h
-		       waitpkgintrin.h"
+		       waitpkgintrin.h cldemoteintrin.h"
 	;;
 ia64-*-*)
 	extra_headers=ia64intrin.h
diff --git a/gcc/config/i386/cldemoteintrin.h b/gcc/config/i386/cldemoteintrin.h
new file mode 100644
index 000000000000..1fa4c2d34d0b
--- /dev/null
+++ b/gcc/config/i386/cldemoteintrin.h
@@ -0,0 +1,47 @@
+/* Copyright (C) 2018 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/>.  */
+
+#if !defined _X86INTRIN_H_INCLUDED
+# error "Never use <cldemoteintrin.h> directly; include <x86intrin.h> instead."
+#endif
+
+#ifndef _CLDEMOTE_H_INCLUDED
+#define _CLDEMOTE_H_INCLUDED
+
+#ifndef __CLDEMOTE__
+#pragma GCC push_options
+#pragma GCC target("cldemote")
+#define __DISABLE_CLDEMOTE__
+#endif /* __CLDEMOTE__ */
+extern __inline void
+__attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_cldemote (void *__A)
+{
+  __builtin_ia32_cldemote (__A);
+}
+#ifdef __DISABLE_CLDEMOTE__
+#undef __DISABLE_CLDEMOTE__
+#pragma GCC pop_options
+#endif /* __DISABLE_CLDEMOTE__ */
+
+#endif /* _CLDEMOTE_H_INCLUDED */
diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index 0672cf54a9b4..7e9e2d153dca 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -110,6 +110,7 @@
 #define bit_RDPID	(1 << 22)
 #define bit_MOVDIRI	(1 << 27)
 #define bit_MOVDIR64B	(1 << 28)
+#define bit_CLDEMOTE	(1 << 25)
 
 /* %edx */
 #define bit_AVX5124VNNIW (1 << 2)
diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index 52891f9ecf06..57e01a06dff6 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -425,6 +425,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
   unsigned int has_vpclmulqdq = 0;
   unsigned int has_movdiri = 0, has_movdir64b = 0;
   unsigned int has_waitpkg = 0;
+  unsigned int has_cldemote = 0;
 
   bool arch;
 
@@ -522,6 +523,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       has_avx512bitalg = ecx & bit_AVX512BITALG;
       has_movdiri = ecx & bit_MOVDIRI;
       has_movdir64b = ecx & bit_MOVDIR64B;
+      has_cldemote = ecx & bit_CLDEMOTE;
 
       has_avx5124vnniw = edx & bit_AVX5124VNNIW;
       has_avx5124fmaps = edx & bit_AVX5124FMAPS;
@@ -1111,6 +1113,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       const char *movdiri = has_movdiri ? " -mmovdiri" : " -mno-movdiri";
       const char *movdir64b = has_movdir64b ? " -mmovdir64b" : " -mno-movdir64b";
       const char *waitpkg = has_waitpkg ? " -mwaitpkg" : " -mno-waitpkg";
+      const char *cldemote = has_cldemote ? " -mcldemote" : " -mno-cldemote";
       options = concat (options, mmx, mmx3dnow, sse, sse2, sse3, ssse3,
 			sse4a, cx16, sahf, movbe, aes, sha, pclmul,
 			popcnt, abm, lwp, fma, fma4, xop, bmi, sgx, bmi2,
@@ -1123,7 +1126,8 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 			avx512ifma, avx512vbmi, avx5124fmaps, avx5124vnniw,
 			clwb, mwaitx, clzero, pku, rdpid, gfni, shstk,
 			avx512vbmi2, avx512vnni, vaes, vpclmulqdq,
-			avx512bitalg, movdiri, movdir64b, waitpkg, NULL);
+			avx512bitalg, movdiri, movdir64b, waitpkg, cldemote,
+			NULL);
     }
 
 done:
diff --git a/gcc/config/i386/i386-c.c b/gcc/config/i386/i386-c.c
index 93766be72306..28ea046fe354 100644
--- a/gcc/config/i386/i386-c.c
+++ b/gcc/config/i386/i386-c.c
@@ -518,6 +518,8 @@ ix86_target_macros_internal (HOST_WIDE_INT isa_flag,
     def_or_undef (parse_in, "__MOVDIR64B__");
   if (isa_flag2 & OPTION_MASK_ISA_WAITPKG)
     def_or_undef (parse_in, "__WAITPKG__");
+  if (isa_flag2 & OPTION_MASK_ISA_CLDEMOTE)
+    def_or_undef (parse_in, "__CLDEMOTE__");
   if (TARGET_IAMCU)
     {
       def_or_undef (parse_in, "__iamcu");
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index ffb1386e80f3..91e7e0027902 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2773,7 +2773,8 @@ ix86_target_string (HOST_WIDE_INT isa, HOST_WIDE_INT isa2,
     { "-mclzero",	OPTION_MASK_ISA_CLZERO },
     { "-mmwaitx",	OPTION_MASK_ISA_MWAITX },
     { "-mmovdir64b",	OPTION_MASK_ISA_MOVDIR64B },
-    { "-mwaitpkg",	OPTION_MASK_ISA_WAITPKG }
+    { "-mwaitpkg",	OPTION_MASK_ISA_WAITPKG },
+    { "-mcldemote",	OPTION_MASK_ISA_CLDEMOTE }
   };
   static struct ix86_target_opts isa_opts[] =
   {
@@ -5390,6 +5391,7 @@ ix86_valid_target_attribute_inner_p (tree args, char *p_strings[],
     IX86_ATTR_ISA ("movdiri", OPT_mmovdiri),
     IX86_ATTR_ISA ("movdir64b", OPT_mmovdir64b),
     IX86_ATTR_ISA ("waitpkg", OPT_mwaitpkg),
+    IX86_ATTR_ISA ("cldemote", OPT_mcldemote),
 
     /* enum options */
     IX86_ATTR_ENUM ("fpmath=",	OPT_mfpmath_),
@@ -30649,6 +30651,7 @@ enum ix86_builtins
   IX86_BUILTIN_UMWAIT,
   IX86_BUILTIN_TPAUSE,
   IX86_BUILTIN_CLZERO,
+  IX86_BUILTIN_CLDEMOTE,
   IX86_BUILTIN_VEC_INIT_V2SI,
   IX86_BUILTIN_VEC_INIT_V4HI,
   IX86_BUILTIN_VEC_INIT_V8QI,
@@ -31987,6 +31990,10 @@ ix86_init_mmx_sse_builtins (void)
   def_builtin2 (OPTION_MASK_ISA_WAITPKG, "__builtin_ia32_tpause",
 	       UINT8_FTYPE_UNSIGNED_UINT64, IX86_BUILTIN_TPAUSE);
 
+  /* CLDEMOTE.  */
+  def_builtin2 (OPTION_MASK_ISA_CLDEMOTE, "__builtin_ia32_cldemote",
+	       VOID_FTYPE_PCVOID, IX86_BUILTIN_CLDEMOTE);
+
   /* Add FMA4 multi-arg argument instructions */
   for (i = 0, d = bdesc_multi_arg; i < ARRAY_SIZE (bdesc_multi_arg); i++, d++)
     {
@@ -37146,6 +37153,16 @@ ix86_expand_builtin (tree exp, rtx target, rtx subtarget,
       emit_insn (ix86_gen_clzero (op0));
       return 0;
 
+    case IX86_BUILTIN_CLDEMOTE:
+      arg0 = CALL_EXPR_ARG (exp, 0);
+      op0 = expand_normal (arg0);
+      icode = CODE_FOR_cldemote;
+      if (!insn_data[icode].operand[0].predicate (op0, Pmode))
+	op0 = ix86_zero_extend_to_Pmode (op0);
+
+      emit_insn (gen_cldemote (op0));
+      return 0;
+
     case IX86_BUILTIN_VEC_INIT_V2SI:
     case IX86_BUILTIN_VEC_INIT_V4HI:
     case IX86_BUILTIN_VEC_INIT_V8QI:
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 8fc980f3ca37..80745bc25a73 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -191,6 +191,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #define TARGET_MOVDIR64B_P(x) TARGET_ISA_MOVDIR64B_P(x)
 #define TARGET_WAITPKG	TARGET_ISA_WAITPKG
 #define TARGET_WAITPKG_P(x)	TARGET_ISA_WAITPKG_P(x)
+#define TARGET_CLDEMOTE	TARGET_ISA_CLDEMOTE
+#define TARGET_CLDEMOTE_P(x) TARGET_ISA_CLDEMOTE_P(x)
 
 #define TARGET_LP64	TARGET_ABI_64
 #define TARGET_LP64_P(x)	TARGET_ABI_64_P(x)
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 1ba352ac2937..302ccc524bb3 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -298,6 +298,9 @@
   UNSPECV_UMWAIT
   UNSPECV_UMONITOR
   UNSPECV_TPAUSE
+
+  ;; For CLDEMOTE support
+  UNSPECV_CLDEMOTE
 ])
 
 ;; Constants to represent rounding modes in the ROUND instruction
@@ -21033,6 +21036,14 @@
   "tpause\t%0"
   [(set_attr "length" "3")])
 
+(define_insn "cldemote"
+  [(unspec_volatile[(match_operand 0 "address_operand" "p")]
+		 UNSPECV_CLDEMOTE)]
+  "TARGET_CLDEMOTE"
+  "cldemote\t%a0"
+  [(set_attr "type" "other")
+   (set_attr "memory" "unknown")])
+
 (include "mmx.md")
 (include "sse.md")
 (include "sync.md")
diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt
index eec702623d26..58d097371d83 100644
--- a/gcc/config/i386/i386.opt
+++ b/gcc/config/i386/i386.opt
@@ -1059,3 +1059,7 @@ Support MOVDIR64B built-in functions and code generation.
 mwaitpkg
 Target Report Mask(ISA_WAITPKG) Var(ix86_isa_flags2) Save
 Support WAITPKG built-in functions and code generation.
+
+mcldemote
+Target Report Mask(ISA_CLDEMOTE) Var(ix86_isa_flags2) Save
+Support CLDEMOTE built-in functions and code generation.
diff --git a/gcc/config/i386/x86intrin.h b/gcc/config/i386/x86intrin.h
index 71a33feb7786..6d67e9cebf43 100644
--- a/gcc/config/i386/x86intrin.h
+++ b/gcc/config/i386/x86intrin.h
@@ -103,6 +103,8 @@
 
 #include <waitpkgintrin.h>
 
+#include <cldemoteintrin.h>
+
 #endif /* __iamcu__ */
 
 #endif /* _X86INTRIN_H_INCLUDED */
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 8066fd3f5cc9..462aedc255ba 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1260,7 +1260,8 @@ See RS/6000 and PowerPC Options.
 -mlzcnt  -mbmi2  -mfxsr  -mxsave  -mxsaveopt  -mrtm  -mlwp  -mmpx  @gol
 -mmwaitx  -mclzero  -mpku  -mthreads -mgfni  -mvaes  -mwaitpkg @gol
 -mshstk -mforce-indirect-call -mavx512vbmi2 @gol
--mvpclmulqdq -mavx512bitalg -mmovdiri -mmovdir64b -mavx512vpopcntdq @gol
+-mvpclmulqdq -mavx512bitalg -mmovdiri -mmovdir64b -mavx512vpopcntdq
+-mcldemote @gol
 -mms-bitfields  -mno-align-stringops  -minline-all-stringops @gol
 -minline-stringops-dynamically  -mstringop-strategy=@var{alg} @gol
 -mmemcpy-strategy=@var{strategy}  -mmemset-strategy=@var{strategy} @gol
@@ -27263,14 +27264,17 @@ preferred alignment to @option{-mpreferred-stack-boundary=2}.
 @need 200
 @itemx -mavx512vpopcntdq
 @opindex mavx512vpopcntdq
+@need 200
+@itemx -mcldemote
+@opindex mcldemote
 These switches enable the use of instructions in the MMX, SSE,
 SSE2, SSE3, SSSE3, SSE4.1, AVX, AVX2, AVX512F, AVX512PF, AVX512ER, AVX512CD,
 SHA, AES, PCLMUL, FSGSBASE, RDRND, F16C, FMA, SSE4A, FMA4, XOP, LWP, ABM,
 AVX512VL, AVX512BW, AVX512DQ, AVX512IFMA, AVX512VBMI, BMI, BMI2, VAES, WAITPKG,
 FXSR, XSAVE, XSAVEOPT, LZCNT, RTM, MPX, MWAITX, PKU, IBT, SHSTK, AVX512VBMI2,
 GFNI, VPCLMULQDQ, AVX512BITALG, MOVDIRI, MOVDIR64B,
-AVX512VPOPCNTDQ3DNow!@: or enhanced 3DNow!@: extended instruction sets.
-Each has a corresponding @option{-mno-} option to disable use of these
+AVX512VPOPCNTDQ, CLDEMOTE, 3DNow!@: or enhanced 3DNow!@: 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
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 657390ce5d40..a256329e8657 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2018-05-14  Sebastian Peryt  <sebastian.peryt@intel.com>
+
+	* gcc.target/i386/cldemote-1.c: New test.
+
 2018-05-13  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/85742
diff --git a/gcc/testsuite/gcc.target/i386/cldemote-1.c b/gcc/testsuite/gcc.target/i386/cldemote-1.c
new file mode 100644
index 000000000000..47482612d2cb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/cldemote-1.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mcldemote" } */
+/* { dg-final { scan-assembler "cldemote\[ \\t\]" } } */
+
+#include "x86intrin.h"
+
+void
+test_cldemote (void *__A)
+{
+  _cldemote (__A);
+}