From 3161039cf3318a1634af04e1da2038e9dc1f4b3a Mon Sep 17 00:00:00 2001
From: Hal Finkel <hfinkel@anl.gov>
Date: Fri, 24 Feb 2012 17:54:01 +0000
Subject: [PATCH] X11/X2 loads around indirect calls on ppc64 should not be
 deleted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151374 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCInstr64Bit.td    | 6 ++++--
 test/CodeGen/PowerPC/ppc64-ind-call.ll | 4 ++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/Target/PowerPC/PPCInstr64Bit.td b/lib/Target/PowerPC/PPCInstr64Bit.td
index ad2bdede491..02bffeddd38 100644
--- a/lib/Target/PowerPC/PPCInstr64Bit.td
+++ b/lib/Target/PowerPC/PPCInstr64Bit.td
@@ -106,7 +106,7 @@ let isCall = 1, PPC970_Unit = 7,
                          (outs), (ins aaddr:$func, variable_ops),
                          "bla $func", BrB, [(PPCcall_SVR4 (i64 imm:$func))]>;
   }
-  let Uses = [CTR8, RM] in {
+  let Uses = [X11, CTR8, RM] in {
     def BCTRL8_ELF : XLForm_2_ext<19, 528, 20, 0, 1,
                                (outs), (ins variable_ops),
                                "bctrl", BrB,
@@ -575,7 +575,8 @@ def LDtoc: Pseudo<(outs G8RC:$rD), (ins tocentry:$disp, G8RC:$reg),
                   "",
                   [(set G8RC:$rD,
                      (PPCtoc_entry tglobaladdr:$disp, G8RC:$reg))]>, isPPC64;
-                     
+
+let hasSideEffects = 1 in { 
 let RST = 2, DS_RA = 0 in // FIXME: Should be a pseudo.
 def LDinto_toc: DSForm_1<58, 0, (outs), (ins G8RC:$reg),
                     "ld 2, 8($reg)", LdStLD,
@@ -585,6 +586,7 @@ let RST = 2, DS_RA = 0 in // FIXME: Should be a pseudo.
 def LDtoc_restore : DSForm_1<58, 0, (outs), (ins),
                     "ld 2, 40(1)", LdStLD,
                     [(PPCtoc_restore)]>, isPPC64;
+}
 def LDX  : XForm_1<31,  21, (outs G8RC:$rD), (ins memrr:$src),
                    "ldx $rD, $src", LdStLD,
                    [(set G8RC:$rD, (load xaddr:$src))]>, isPPC64;
diff --git a/test/CodeGen/PowerPC/ppc64-ind-call.ll b/test/CodeGen/PowerPC/ppc64-ind-call.ll
index f2d7cb489ed..d5c4d468c65 100644
--- a/test/CodeGen/PowerPC/ppc64-ind-call.ll
+++ b/test/CodeGen/PowerPC/ppc64-ind-call.ll
@@ -9,4 +9,8 @@ entry:
 }
 
 ; CHECK: @test1
+; CHECK: ld 11, 0(3)
+; CHECK: ld 2, 8(3)
+; CHECK: bctrl
+; CHECK: ld 2, 40(1)