[gcc(refs/vendors/redhat/heads/gcc-8-branch)] x86: Update Intel processor detection

[gcc(refs/vendors/redhat/heads/gcc-8-branch)] x86: Update Intel processor detection

[Jakub Jelinek]

https://gcc.gnu.org/g:8f000b3d172a070dfd5a9d21224dc909a1d8836f

commit 8f000b3d172a070dfd5a9d21224dc909a1d8836f
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon May 18 05:35:27 2020 -0700

    x86: Update Intel processor detection
    
    Add cpu model numbers for Intel Airmont, Comet Lake and Ice Lake
    processor families.
    
            * config/i386/driver-i386.c (host_detect_local_cpu): Support
            Intel Airmont, Comet Lake and Ice Lake processor families.

Diff:
---
 gcc/config/i386/driver-i386.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index 97eaf68442d..f9bd27bf0d7 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -752,9 +752,12 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 	case 0x37:
 	case 0x4a:
 	case 0x4d:
-	case 0x5a:
 	case 0x5d:
 	  /* Silvermont.  */
+	case 0x4c:
+	case 0x5a:
+	case 0x75:
+	  /* Airmont.  */
 	  cpu = "silvermont";
 	  break;
 	case 0x0f:
@@ -807,12 +810,26 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 	case 0x8e:
 	case 0x9e:
 	  /* Kaby Lake.  */
+	case 0xa5:
+	case 0xa6:
+	  /* Comet Lake.  */
 	  cpu = "skylake";
 	  break;
 	case 0x55:
 	  /* Skylake with AVX-512.  */
 	  cpu = "skylake-avx512";
 	  break;
+	case 0x6a:
+	case 0x6c:
+	  /* Ice Lake server.  */
+	  cpu = "icelake-server";
+	  break;
+	case 0x7e:
+	case 0x7d:
+	case 0x9d:
+	  /* Ice Lake client.  */
+	  cpu = "icelake-client";
+	  break;
 	case 0x57:
 	  /* Knights Landing.  */
 	  cpu = "knl";