From 6e4d3ee91ab19e4ffe8856b8315640b5c93533e5 Mon Sep 17 00:00:00 2001
From: Jack Lloyd <jack@randombit.net>
Date: Mon, 9 Nov 2020 19:26:31 -0500
Subject: Use -mcpu=power9 to use DARN instruction

Backport of #2480
---
 src/build-data/arch/ppc64.txt      | 1 +
 src/build-data/cc/clang.txt        | 3 +++
 src/build-data/cc/gcc.txt          | 1 +
 src/lib/rng/processor_rng/info.txt | 4 ++++
 4 files changed, 9 insertions(+)

diff --git a/src/build-data/arch/ppc64.txt b/src/build-data/arch/ppc64.txt
index 57a363c04..4b871e85e 100644
--- a/src/build-data/arch/ppc64.txt
+++ b/src/build-data/arch/ppc64.txt
@@ -13,4 +13,5 @@ ppc64el
 <isa_extensions>
 altivec
 powercrypto
+power9
 </isa_extensions>
diff --git a/src/build-data/cc/clang.txt b/src/build-data/cc/clang.txt
index ab37b33d5..2d5bfcebb 100644
--- a/src/build-data/cc/clang.txt
+++ b/src/build-data/cc/clang.txt
@@ -58,6 +58,9 @@ rdseed -> "-mrdseed"
 sha    -> "-msha"
 altivec -> "-maltivec"
 
+ppc64:powercrypto -> "-mcrypto"
+ppc64:power9 -> "-mcpu=power9"
+
 arm64:armv8crypto -> "-march=armv8+crypto"
 
 arm32:neon    -> "-mfpu=neon"
diff --git a/src/build-data/cc/gcc.txt b/src/build-data/cc/gcc.txt
index d7e019212..c433935c2 100644
--- a/src/build-data/cc/gcc.txt
+++ b/src/build-data/cc/gcc.txt
@@ -65,6 +65,7 @@ sha     -> "-msha"
 altivec -> "-maltivec"
 
 powercrypto -> "-mcrypto"
+ppc64:power9 -> "-mcpu=power9"
 
 arm64:armv8crypto -> ""
 arm64:armv8sm3 -> "-march=armv8.2-a+sm4"
diff --git a/src/lib/rng/processor_rng/info.txt b/src/lib/rng/processor_rng/info.txt
index ec1c7faf3..61d10f11b 100644
--- a/src/lib/rng/processor_rng/info.txt
+++ b/src/lib/rng/processor_rng/info.txt
@@ -14,3 +14,7 @@ x86_32
 x86_64
 ppc64
 </arch>
+
+<isa>
+ppc64:power9
+</isa>
-- 
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