[Solaris] emit .init_array instead of .ctors on Solaris (Sparc/x86)

Patch by Fedor Sergeev.

Differential Revision:  https://reviews.llvm.org/D33868

llvm-svn: 305948

Author: dcci

llvm/lib/Target/Sparc/SparcTargetObjectFile.cpp

@@ -15,6 +15,12 @@
 
 using namespace llvm;
 
+void SparcELFTargetObjectFile::Initialize(MCContext &Ctx,
+                                          const TargetMachine &TM) {
+  TargetLoweringObjectFileELF::Initialize(Ctx, TM);
+  InitializeELF(TM.Options.UseInitArray);
+}
+
 const MCExpr *SparcELFTargetObjectFile::getTTypeGlobalReference(
     const GlobalValue *GV, unsigned Encoding, const TargetMachine &TM,
     MachineModuleInfo *MMI, MCStreamer &Streamer) const {

llvm/lib/Target/Sparc/SparcTargetObjectFile.h

@@ -23,6 +23,8 @@ class SparcELFTargetObjectFile : public TargetLoweringObjectFileELF {
     TargetLoweringObjectFileELF()
   {}
 
+  void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
+
   const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
                                         unsigned Encoding,
                                         const TargetMachine &TM,

llvm/lib/Target/X86/X86TargetMachine.cpp

@@ -91,6 +91,8 @@ static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
     return llvm::make_unique<X86FreeBSDTargetObjectFile>();
   if (TT.isOSLinux() || TT.isOSNaCl() || TT.isOSIAMCU())
     return llvm::make_unique<X86LinuxNaClTargetObjectFile>();
+  if (TT.isOSSolaris())
+    return llvm::make_unique<X86SolarisTargetObjectFile>();
   if (TT.isOSFuchsia())
     return llvm::make_unique<X86FuchsiaTargetObjectFile>();
   if (TT.isOSBinFormatELF())

llvm/lib/Target/X86/X86TargetObjectFile.cpp

@@ -86,6 +86,12 @@ X86LinuxNaClTargetObjectFile::Initialize(MCContext &Ctx,
   InitializeELF(TM.Options.UseInitArray);
 }
 
+void X86SolarisTargetObjectFile::Initialize(MCContext &Ctx,
+                                            const TargetMachine &TM) {
+  TargetLoweringObjectFileELF::Initialize(Ctx, TM);
+  InitializeELF(TM.Options.UseInitArray);
+}
+
 const MCExpr *X86WindowsTargetObjectFile::lowerRelativeReference(
     const GlobalValue *LHS, const GlobalValue *RHS,
     const TargetMachine &TM) const {

llvm/lib/Target/X86/X86TargetObjectFile.h

@@ -66,6 +66,11 @@ namespace llvm {
     void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
   };
 
+  /// \brief This implementation is used for Solaris on x86/x86-64.
+  class X86SolarisTargetObjectFile : public X86ELFTargetObjectFile {
+    void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
+  };
+
   /// \brief This implementation is used for Windows targets on x86 and x86-64.
   class X86WindowsTargetObjectFile : public TargetLoweringObjectFileCOFF {
     const MCExpr *

llvm/test/CodeGen/SPARC/constructor.ll

@@ -0,0 +1,29 @@
+; RUN: llc -mtriple sparc-sun-solaris2.11 -use-ctors < %s | FileCheck --check-prefix=CTOR %s
+; RUN: llc -mtriple sparc-sun-solaris2.11 < %s | FileCheck --check-prefix=INIT-ARRAY %s
+@llvm.global_ctors = appending global [2 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @f, i8* null}, { i32, void ()*, i8* } { i32 15, void ()* @g, i8* @v }]
+
+@v = weak_odr global i8 0
+
+define void @f() {
+entry:
+  ret void
+}
+
+define void @g() {
+entry:
+  ret void
+}
+
+; CTOR:    .section  .ctors.65520,#alloc,#write
+; CTOR-NEXT: .p2align      2
+; CTOR-NEXT: .word  g
+; CTOR-NEXT: .section      .ctors,#alloc,#write
+; CTOR-NEXT: .p2align      2
+; CTOR-NEXT: .word  f
+
+; INIT-ARRAY:    .section  .init_array.15,#alloc,#write
+; INIT-ARRAY-NEXT: .p2align  2
+; INIT-ARRAY-NEXT: .word g
+; INIT-ARRAY-NEXT: .section  .init_array,#alloc,#write
+; INIT-ARRAY-NEXT: .p2align  2
+; INIT-ARRAY-NEXT: .word f

llvm/test/CodeGen/X86/constructor.ll

@@ -1,7 +1,9 @@
 ; RUN: llc -mtriple x86_64-pc-linux -use-ctors < %s | FileCheck --check-prefix=CTOR %s
 ; RUN: llc -mtriple x86_64-unknown-freebsd -use-ctors < %s | FileCheck --check-prefix=CTOR %s
+; RUN: llc -mtriple x86_64-pc-solaris2.11 -use-ctors < %s | FileCheck --check-prefix=CTOR %s
 ; RUN: llc -mtriple x86_64-pc-linux < %s | FileCheck --check-prefix=INIT-ARRAY %s
 ; RUN: llc -mtriple x86_64-unknown-freebsd < %s | FileCheck --check-prefix=INIT-ARRAY %s
+; RUN: llc -mtriple x86_64-pc-solaris2.11 < %s | FileCheck --check-prefix=INIT-ARRAY %s
 ; RUN: llc -mtriple x86_64-unknown-nacl < %s | FileCheck --check-prefix=NACL %s
 ; RUN: llc -mtriple i586-intel-elfiamcu -use-ctors < %s | FileCheck %s --check-prefix=MCU-CTORS
 ; RUN: llc -mtriple i586-intel-elfiamcu < %s | FileCheck %s --check-prefix=MCU-INIT-ARRAY