From 2b0a157d68365dc9515bd643ab0f5d0cd537cd8f Mon Sep 17 00:00:00 2001
From: "Paul E. Murphy" <murp@ibm.com>
Date: Wed, 27 Mar 2024 16:03:11 -0500
Subject: cmd/compile: intrinsify math.MulUintptr on PPC64

This can be done efficiently with few instructions.

This also adds MULHDUCC for further codegen improvement.

Change-Id: I06320ba4383a679341b911a237a360ef07b19168
Reviewed-on: https://go-review.googlesource.com/c/go/+/605975
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Archana Ravindar <aravinda@redhat.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
---
 test/codegen/bool.go | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test/codegen')

diff --git a/test/codegen/bool.go b/test/codegen/bool.go
index 0daeb88b9b..164ca1b224 100644
--- a/test/codegen/bool.go
+++ b/test/codegen/bool.go
@@ -273,6 +273,12 @@ func TestLogicalCompareZero(x *[64]uint64) {
 		x[12] = uint64(c)
 	}
 
+	// ppc64x:"MULHDUCC",^"MULHDU"
+	hi, _ := bits.Mul64(x[13], x[14])
+	if hi != 0 {
+		x[14] = hi
+	}
+
 }
 
 func constantWrite(b bool, p *bool) {
-- 
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