From 0d1bd457c69df2fd8a2c687dbee76b476ec129b3 Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Fri, 26 Jun 2015 21:14:58 +0000
Subject: [PATCH] AMDGPU/SI: Emit amd_kernel_code_t in EmitFunctionBodyStart()

Summary:
This way the function symbol points to the start of amd_kernel_code_t
rather than the start of the function.

Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10705

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240829 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp | 21 ++++++++++++++-------
 lib/Target/AMDGPU/AMDGPUAsmPrinter.h   |  2 ++
 test/CodeGen/AMDGPU/hsa.ll             |  4 +++-
 3 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
index afc6bcb52bb..581f1129da6 100644
--- a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -89,6 +89,15 @@ AMDGPUAsmPrinter::AMDGPUAsmPrinter(TargetMachine &TM,
                                    std::unique_ptr<MCStreamer> Streamer)
     : AsmPrinter(TM, std::move(Streamer)) {}
 
+void AMDGPUAsmPrinter::EmitFunctionBodyStart() {
+  const AMDGPUSubtarget &STM = MF->getSubtarget<AMDGPUSubtarget>();
+  SIProgramInfo KernelInfo;
+  if (STM.isAmdHsaOS()) {
+    getSIProgramInfo(KernelInfo, *MF);
+    EmitAmdKernelCodeT(*MF, KernelInfo);
+  }
+}
+
 void AMDGPUAsmPrinter::EmitEndOfAsmFile(Module &M) {
 
   // This label is used to mark the end of the .text section.
@@ -113,13 +122,11 @@ bool AMDGPUAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
   const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>();
   SIProgramInfo KernelInfo;
-  if (STM.isAmdHsaOS()) {
-    getSIProgramInfo(KernelInfo, MF);
-    EmitAmdKernelCodeT(MF, KernelInfo);
-    OutStreamer->EmitCodeAlignment(2 << (MF.getAlignment() - 1));
-  } else if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) {
-    getSIProgramInfo(KernelInfo, MF);
-    EmitProgramInfoSI(MF, KernelInfo);
+  if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) {
+    if (!STM.isAmdHsaOS()) {
+      getSIProgramInfo(KernelInfo, MF);
+      EmitProgramInfoSI(MF, KernelInfo);
+    }
   } else {
     EmitProgramInfoR600(MF);
   }
diff --git a/lib/Target/AMDGPU/AMDGPUAsmPrinter.h b/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
index 1acff3a3222..345af9b85e1 100644
--- a/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
+++ b/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
@@ -97,6 +97,8 @@ public:
   /// Implemented in AMDGPUMCInstLower.cpp
   void EmitInstruction(const MachineInstr *MI) override;
 
+  void EmitFunctionBodyStart() override;
+
   void EmitEndOfAsmFile(Module &M) override;
 
   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
diff --git a/test/CodeGen/AMDGPU/hsa.ll b/test/CodeGen/AMDGPU/hsa.ll
index f9113399afe..3a76a364861 100644
--- a/test/CodeGen/AMDGPU/hsa.ll
+++ b/test/CodeGen/AMDGPU/hsa.ll
@@ -1,8 +1,10 @@
 ; RUN: llc < %s -mtriple=amdgcn--amdhsa -mcpu=kaveri | FileCheck --check-prefix=HSA %s
 
+; HSA: {{^}}simple:
 ; HSA: .section        .hsa.version
 ; HSA-NEXT: .ascii  "HSA Code Unit:0.0:AMD:0.1:GFX8.1:0"
-; HSA: {{^}}simple:
+; Test that the amd_kernel_code_t object is emitted
+; HSA: .asciz
 ; Make sure we are setting the ATC bit:
 ; HSA: s_mov_b32 s[[HI:[0-9]]], 0x100f000
 ; HSA: buffer_store_dword v{{[0-9]+}}, s[0:[[HI]]], 0
-- 
2.34.1