svn commit: r262460 - projects/clang-sparc64/contrib/llvm/tools/clang/lib/CodeGen

[Dimitry Andric]

Author: dim
Date: Mon Feb 24 21:48:03 2014
New Revision: 262460
URL: http://svnweb.freebsd.org/changeset/base/262460

Log:
  Pull in r202059 from upstream clang trunk (by Roman Divacky):
  
    Implement getDwarfEHStackPointer() and initDwarfEHRegSizeTable() for sparcv9.
  
  Enables the libgcc-specific undocumented __builtin_dwarf_sp_column() and
  __builtin_init_dwarf_reg_size_table() builtins to be compiled for
  sparc64.

Modified:
  projects/clang-sparc64/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp

Modified: projects/clang-sparc64/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
==============================================================================
--- projects/clang-sparc64/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp	Mon Feb 24 21:22:44 2014	(r262459)
+++ projects/clang-sparc64/contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp	Mon Feb 24 21:48:03 2014	(r262460)
@@ -5435,9 +5435,50 @@ class SparcV9TargetCodeGenInfo : public 
 public:
   SparcV9TargetCodeGenInfo(CodeGenTypes &CGT)
     : TargetCodeGenInfo(new SparcV9ABIInfo(CGT)) {}
+
+  int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const {
+    return 14;
+  }
+
+  bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
+                               llvm::Value *Address) const;
 };
 } // end anonymous namespace
 
+bool
+SparcV9TargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
+                                                llvm::Value *Address) const {
+  // This is calculated from the LLVM and GCC tables and verified
+  // against gcc output.  AFAIK all ABIs use the same encoding.
+
+  CodeGen::CGBuilderTy &Builder = CGF.Builder;
+
+  llvm::IntegerType *i8 = CGF.Int8Ty;
+  llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4);
+  llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8);
+
+  // 0-31: the 8-byte general-purpose registers
+  AssignToArrayRange(Builder, Address, Eight8, 0, 31);
+
+  // 32-63: f0-31, the 4-byte floating-point registers
+  AssignToArrayRange(Builder, Address, Four8, 32, 63);
+
+  //   Y   = 64
+  //   PSR = 65
+  //   WIM = 66
+  //   TBR = 67
+  //   PC  = 68
+  //   NPC = 69
+  //   FSR = 70
+  //   CSR = 71
+  AssignToArrayRange(Builder, Address, Eight8, 64, 71);
+   
+  // 72-87: d0-15, the 8-byte floating-point registers
+  AssignToArrayRange(Builder, Address, Eight8, 72, 87);
+
+  return false;
+}
+
 
 //===----------------------------------------------------------------------===//
 // Xcore ABI Implementation