From 5d617429f48b5028bec3772373de993eebafd1d2 Mon Sep 17 00:00:00 2001
From: Dipal M Zambare <DipalMadhukar.Zambare@amd.com>
Date: Fri, 22 Jul 2022 10:27:53 +0530
Subject: [PATCH] Enabled znver4 support for GCC version >= 12

 - Updated zen4 configuration to add -march=znver4 flag in the
   compiler options if the gcc version is above or equal to 12

AMD-Internal: [CPUPL-1937]
Change-Id: Ic11470b92f71e49ee193a3a5406cf6045d66bd2f
---
 config/zen4/make_defs.mk | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/config/zen4/make_defs.mk b/config/zen4/make_defs.mk
index 75bec7018..d5d13167a 100644
--- a/config/zen4/make_defs.mk
+++ b/config/zen4/make_defs.mk
@@ -71,11 +71,17 @@ CKOPTFLAGS     := $(COPTFLAGS) -fomit-frame-pointer
 ifeq ($(CC_VENDOR),gcc)
 GCC_VERSION := $(strip $(shell $(CC) -dumpversion | cut -d. -f1))
 # gcc or clang version must be atleast 4.0
-# gcc 9.0 or later:
+# gcc 12.0 or later:
+ifeq ($(shell test $(GCC_VERSION) -ge 12; echo $$?),0)
+CKVECFLAGS     +=  -march=znver4 -mavx512f -mavx512dq -mavx512bw -mavx512vl -mavx512vnni -mfpmath=sse
+CRVECFLAGS     +=  -march=znver4
+else
+# gcc 11.0 or later:
 ifeq ($(shell test $(GCC_VERSION) -ge 11; echo $$?),0)
 CKVECFLAGS     +=  -march=znver3 -mavx512f -mavx512dq -mavx512bw -mavx512vl -mavx512vnni -mfpmath=sse
 CRVECFLAGS     +=  -march=znver3
 else
+# gcc 9.0 or later:
 ifeq ($(shell test $(GCC_VERSION) -ge 9; echo $$?),0)
 CKVECFLAGS     +=  -march=znver2 -mavx512f -mavx512dq -mavx512bw -mavx512vl -mavx512vnni -mfpmath=sse
 CRVECFLAGS     +=  -march=znver2
@@ -86,6 +92,7 @@ CKVECFLAGS += -march=znver1 -mno-avx256-split-unaligned-store
 CRVECFLAGS += -march=znver1 -mno-avx256-split-unaligned-store
 endif # GCC 9
 endif # GCC 11
+endif # GCC 12
 else
 ifeq ($(CC_VENDOR),clang)