From: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
Date: Mon, 6 Feb 2017 17:33:43 +0000 (-0200)
Subject: cmd/internal/obj/ppc64, cmd/link/internal/ppc64: Change function alignment to 16
X-Git-Tag: go1.9beta1~329
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=09b71d563a53766ef2ab34beac6ddaea48c56783;p=gostls13.git

cmd/internal/obj/ppc64, cmd/link/internal/ppc64: Change function alignment to 16

The Power processor manual states that "Branches not from the last instruction
of an aligned quadword and not to the first instruction of an aligned quadword
cause inefficiencies in the IBuffer". This changes the function alignment from 8
to 16 bytes to comply with that.

Fixes #18963

Change-Id: Ibce9bf8302110a86c6ab05948569af9ffdfcf4bb
Reviewed-on: https://go-review.googlesource.com/36390
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
---

diff --git a/src/cmd/internal/obj/ppc64/asm9.go b/src/cmd/internal/obj/ppc64/asm9.go
index 8bfc667cff..53cdb5f92b 100644
--- a/src/cmd/internal/obj/ppc64/asm9.go
+++ b/src/cmd/internal/obj/ppc64/asm9.go
@@ -53,7 +53,7 @@ type ctxt9 struct {
 // Instruction layout.
 
 const (
-	funcAlign = 8
+	funcAlign = 16
 )
 
 const (
diff --git a/src/cmd/link/internal/ppc64/l.go b/src/cmd/link/internal/ppc64/l.go
index f7ae33dd25..c78535be58 100644
--- a/src/cmd/link/internal/ppc64/l.go
+++ b/src/cmd/link/internal/ppc64/l.go
@@ -64,7 +64,7 @@ package ppc64
 const (
 	maxAlign  = 32 // max data alignment
 	minAlign  = 1  // min data alignment
-	funcAlign = 8
+	funcAlign = 16
 )
 
 /* Used by ../internal/ld/dwarf.go */