From 064d1a5d5dfef2f85a5c8078e4119bbbd43e4514 Mon Sep 17 00:00:00 2001
From: David Given <dg@cowlark.com>
Date: Mon, 31 Oct 2016 19:52:17 +0100
Subject: [PATCH] Use fmadd for multiply-and-add instructions.

---
 mach/powerpc/mcg/table | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mach/powerpc/mcg/table b/mach/powerpc/mcg/table
index 61729d308..159d0332b 100644
--- a/mach/powerpc/mcg/table
+++ b/mach/powerpc/mcg/table
@@ -711,6 +711,14 @@ PATTERNS
     FPU4R(DIVF.F, "fdivs")
     FPU8R(DIVF.D, "fdiv")
 
+    out:(double)reg = ADDF.D(MULF.D(m1:(double)reg, m2:(double)reg), m3:(double)reg)
+        emit "fmadd %out, %m1, %m2, %m3"
+        cost 4;
+
+    out:(double)reg = ADDF.D(m3:(double)reg, MULF.D(m1:(double)reg, m2:(double)reg))
+        emit "fmadd %out, %m1, %m2, %m3"
+        cost 4;
+
     out:(float)reg = NEGF.F(left:(float)reg)
         emit "fneg %out, %left"
         cost 4;