From c3c28f8599f56c91974000f8044bf392beb753e5 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Sun, 14 Apr 2013 05:10:36 +0000
Subject: [PATCH] Add support for the abs64 SPARC v9 code model.

For when 16 TB just isn't enough.

llvm-svn: 179474
---
 llvm/lib/Target/Sparc/SparcISelLowering.cpp |  9 +++++++++
 llvm/test/CodeGen/SPARC/constpool.ll        | 10 ++++++++++
 llvm/test/CodeGen/SPARC/globals.ll          | 10 ++++++++++
 3 files changed, 29 insertions(+)

diff --git a/llvm/lib/Target/Sparc/SparcISelLowering.cpp b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
index 3300368..198d194a 100644
--- a/llvm/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1410,14 +1410,23 @@ SDValue SparcTargetLowering::makeAddress(SDValue Op, SelectionDAG &DAG) const {
   default:
     llvm_unreachable("Unsupported absolute code model");
   case CodeModel::Small:
+    // abs32.
     return makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
   case CodeModel::Medium: {
+    // abs44.
     SDValue H44 = makeHiLoPair(Op, SPII::MO_H44, SPII::MO_M44, DAG);
     H44 = DAG.getNode(ISD::SHL, DL, VT, H44, DAG.getIntPtrConstant(12));
     SDValue L44 = withTargetFlags(Op, SPII::MO_L44, DAG);
     L44 = DAG.getNode(SPISD::Lo, DL, VT, L44);
     return DAG.getNode(ISD::ADD, DL, VT, H44, L44);
   }
+  case CodeModel::Large: {
+    // abs64.
+    SDValue Hi = makeHiLoPair(Op, SPII::MO_HH, SPII::MO_HM, DAG);
+    Hi = DAG.getNode(ISD::SHL, DL, VT, Hi, DAG.getIntPtrConstant(32));
+    SDValue Lo = makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
+    return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
+  }
   }
 }
 
diff --git a/llvm/test/CodeGen/SPARC/constpool.ll b/llvm/test/CodeGen/SPARC/constpool.ll
index 6c3a1bf..d93a53b 100644
--- a/llvm/test/CodeGen/SPARC/constpool.ll
+++ b/llvm/test/CodeGen/SPARC/constpool.ll
@@ -1,6 +1,7 @@
 ; RUN: llc < %s -march=sparc   -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=medium | FileCheck --check-prefix=abs44 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=large  | FileCheck --check-prefix=abs64 %s
 ; RUN: llc < %s -march=sparc   -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v8pic32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v9pic32 %s
 
@@ -21,6 +22,15 @@ entry:
 ; abs44: ld [%[[R3]]+%l44(.LCPI0_0)], %f1
 ; abs44: jmp %i7+8
 
+; abs64: floatCP
+; abs64: sethi %hi(.LCPI0_0), %[[R1:[gilo][0-7]]]
+; abs64: add %[[R1]], %lo(.LCPI0_0), %[[R2:[gilo][0-7]]]
+; abs64: sethi %hh(.LCPI0_0), %[[R3:[gilo][0-7]]]
+; abs64: add %[[R3]], %hm(.LCPI0_0), %[[R4:[gilo][0-7]]]
+; abs64: sllx %[[R4]], 32, %[[R5:[gilo][0-7]]]
+; abs64: ld [%[[R5]]+%[[R2]]], %f1
+; abs64: jmp %i7+8
+
 ; v8pic32: floatCP
 ; v8pic32: _GLOBAL_OFFSET_TABLE_
 ; v8pic32: sethi %hi(.LCPI0_0), %[[R1:[gilo][0-7]]]
diff --git a/llvm/test/CodeGen/SPARC/globals.ll b/llvm/test/CodeGen/SPARC/globals.ll
index 957059d..8d8de58 100644
--- a/llvm/test/CodeGen/SPARC/globals.ll
+++ b/llvm/test/CodeGen/SPARC/globals.ll
@@ -1,6 +1,7 @@
 ; RUN: llc < %s -march=sparc   -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=medium | FileCheck --check-prefix=abs44 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=large  | FileCheck --check-prefix=abs64 %s
 ; RUN: llc < %s -march=sparc   -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v8pic32 %s
 ; RUN: llc < %s -march=sparcv9 -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v9pic32 %s
 
@@ -23,6 +24,15 @@ define zeroext i8 @loadG() {
 ; abs44: ldub [%[[R3]]+%l44(G)], %i0
 ; abs44: jmp %i7+8
 
+; abs64: loadG
+; abs64: sethi %hi(G), %[[R1:[gilo][0-7]]]
+; abs64: add %[[R1]], %lo(G), %[[R2:[gilo][0-7]]]
+; abs64: sethi %hh(G), %[[R3:[gilo][0-7]]]
+; abs64: add %[[R3]], %hm(G), %[[R4:[gilo][0-7]]]
+; abs64: sllx %[[R4]], 32, %[[R5:[gilo][0-7]]]
+; abs64: ldub [%[[R5]]+%[[R2]]], %i0
+; abs64: jmp %i7+8
+
 ; v8pic32: loadG
 ; v8pic32: _GLOBAL_OFFSET_TABLE_
 ; v8pic32: sethi %hi(G), %[[R1:[gilo][0-7]]]
-- 
2.7.4