From 57ddfb8bca95a586773e458dae5e3b09e7b34d55 Mon Sep 17 00:00:00 2001
From: Konstantin Zhuravlyov <kzhuravl_dev@outlook.com>
Date: Tue, 5 Apr 2016 16:00:58 +0000
Subject: [PATCH] [AMDGPU] Emit linkonce and linkonce_odr symbols

Differential Revision: http://reviews.llvm.org/D18726

llvm-svn: 265408
---
 lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp |  2 +
 test/CodeGen/AMDGPU/hsa-globals.ll     | 56 ++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)

diff --git a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
index 1ef9f597dc2..0c494e37d1e 100644
--- a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -134,6 +134,8 @@ void AMDGPUAsmPrinter::EmitFunctionEntryLabel() {
 
 static bool isModuleLinkage(const GlobalValue *GV) {
   switch (GV->getLinkage()) {
+  case GlobalValue::LinkOnceODRLinkage:
+  case GlobalValue::LinkOnceAnyLinkage:
   case GlobalValue::InternalLinkage:
   case GlobalValue::CommonLinkage:
    return true;
diff --git a/test/CodeGen/AMDGPU/hsa-globals.ll b/test/CodeGen/AMDGPU/hsa-globals.ll
index 90322ac3dc0..a19a33492a7 100644
--- a/test/CodeGen/AMDGPU/hsa-globals.ll
+++ b/test/CodeGen/AMDGPU/hsa-globals.ll
@@ -1,10 +1,14 @@
 ; RUN: llc < %s -mtriple=amdgcn--amdhsa -mcpu=kaveri | FileCheck --check-prefix=ASM %s
 ; RUN: llc < %s -mtriple=amdgcn--amdhsa -mcpu=kaveri | llvm-mc -filetype=obj -triple amdgcn--amdhsa -mcpu=kaveri | llvm-readobj -symbols -s | FileCheck %s --check-prefix=ELF
 
+@linkonce_odr_global_program = linkonce_odr addrspace(1) global i32 0
+@linkonce_global_program = linkonce addrspace(1) global i32 0
 @internal_global_program = internal addrspace(1) global i32 0
 @common_global_program = common addrspace(1) global i32 0
 @external_global_program = addrspace(1) global i32 0
 
+@linkonce_odr_global_agent = linkonce_odr addrspace(1) global i32 0, section ".hsadata_global_agent"
+@linkonce_global_agent = linkonce addrspace(1) global i32 0, section ".hsadata_global_agent"
 @internal_global_agent = internal addrspace(1) global i32 0, section ".hsadata_global_agent"
 @common_global_agent = common addrspace(1) global i32 0, section ".hsadata_global_agent"
 @external_global_agent = addrspace(1) global i32 0, section ".hsadata_global_agent"
@@ -16,6 +20,18 @@ define void @test() {
   ret void
 }
 
+; ASM: .amdgpu_hsa_module_global linkonce_odr_global
+; ASM: .size linkonce_odr_global_program, 4
+; ASM: .hsadata_global_program
+; ASM: linkonce_odr_global_program:
+; ASM: .long 0
+
+; ASM: .amdgpu_hsa_module_global linkonce_global
+; ASM: .size linkonce_global_program, 4
+; ASM: .hsadata_global_program
+; ASM: linkonce_global_program:
+; ASM: .long 0
+
 ; ASM: .amdgpu_hsa_module_global internal_global
 ; ASM: .size internal_global_program, 4
 ; ASM: .hsadata_global_program
@@ -34,6 +50,18 @@ define void @test() {
 ; ASM: external_global_program:
 ; ASM: .long 0
 
+; ASM: .amdgpu_hsa_module_global linkonce_odr_global
+; ASM: .size linkonce_odr_global_agent, 4
+; ASM: .hsadata_global_agent
+; ASM: linkonce_odr_global_agent:
+; ASM: .long 0
+
+; ASM: .amdgpu_hsa_module_global linkonce_global
+; ASM: .size linkonce_global_agent, 4
+; ASM: .hsadata_global_agent
+; ASM: linkonce_global_agent:
+; ASM: .long 0
+
 ; ASM: .amdgpu_hsa_module_global internal_global
 ; ASM: .size internal_global_agent, 4
 ; ASM: .hsadata_global_agent
@@ -123,6 +151,34 @@ define void @test() {
 ; ELF: Section: .hsatext
 ; ELF: }
 
+; ELF: Symbol {
+; ELF: Name: linkonce_global_agent
+; ELF: Size: 4
+; ELF: Binding: Local
+; ELF: Section: .hsadata_global_agent
+; ELF: }
+
+; ELF: Symbol {
+; ELF: Name: linkonce_global_program
+; ELF: Size: 4
+; ELF: Binding: Local
+; ELF: Section: .hsadata_global_program
+; ELF: }
+
+; ELF: Symbol {
+; ELF: Name: linkonce_odr_global_agent
+; ELF: Size: 4
+; ELF: Binding: Local
+; ELF: Section: .hsadata_global_agent
+; ELF: }
+
+; ELF: Symbol {
+; ELF: Name: linkonce_odr_global_program
+; ELF: Size: 4
+; ELF: Binding: Local
+; ELF: Section: .hsadata_global_program
+; ELF: }
+
 ; ELF: Symbol {
 ; ELF: Name: external_global_agent
 ; ELF: Size: 4