From 061d77cb7008cf9e4d8b3b6382828b483bff032f Mon Sep 17 00:00:00 2001
From: "Paul E. Murphy" <murp@ibm.com>
Date: Fri, 15 Sep 2023 15:20:56 -0500
Subject: cmd/compile/internal/ssa: on PPC64, generate large constant paddi

This is only supported power10/linux/PPC64. This generates smaller,
faster code by merging a pli + add into paddi.

Change-Id: I1f4d522fce53aea4c072713cc119a9e0d7065acc
Reviewed-on: https://go-review.googlesource.com/c/go/+/531717
Run-TryBot: Paul Murphy <murp@ibm.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
---
 test/codegen/arithmetic.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'test/codegen/arithmetic.go')

diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go
index b91a904be9..0d6d969000 100644
--- a/test/codegen/arithmetic.go
+++ b/test/codegen/arithmetic.go
@@ -10,6 +10,21 @@ package codegen
 // simplifications and optimizations on integer types.
 // For codegen tests on float types, see floats.go.
 
+// ----------------- //
+//    Addition       //
+// ----------------- //
+
+func AddLargeConst(a uint64, out []uint64) {
+	// ppc64x/power10:"ADD\t[$]4294967296,"
+	// ppc64x/power9:"MOVD\t[$]i64.0000000100000000[(]SB[)]", "ADD\tR[0-9]*"
+	// ppc64x/power8:"MOVD\t[$]i64.0000000100000000[(]SB[)]", "ADD\tR[0-9]*"
+	out[0] = a + 0x100000000
+	// ppc64x/power10:"ADD\t[$]-8589934592,"
+	// ppc64x/power9:"MOVD\t[$]i64.fffffffe00000000[(]SB[)]", "ADD\tR[0-9]*"
+	// ppc64x/power8:"MOVD\t[$]i64.fffffffe00000000[(]SB[)]", "ADD\tR[0-9]*"
+	out[1] = a + 0xFFFFFFFE00000000
+}
+
 // ----------------- //
 //    Subtraction    //
 // ----------------- //
-- 
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