Subzero. x8664. Resurrects the Target.

src/IceTargetLoweringX8632Traits.h

Index: src/IceTargetLoweringX8632Traits.h
diff --git a/src/IceTargetLoweringX8632Traits.h b/src/IceTargetLoweringX8632Traits.h
index b0738811f32281ab40f93076833a5bb8133202f7..d02f69a1d7c02076b441b877c5fecf48a5864241 100644
--- a/src/IceTargetLoweringX8632Traits.h
+++ b/src/IceTargetLoweringX8632Traits.h
@@ -68,6 +68,8 @@ template <> struct MachineTraits<TargetX8632> {
   using Cond = ::Ice::CondX86;
 
   using RegisterSet = ::Ice::RegX8632;
+  static const SizeT StackPtr = RegX8632::Reg_esp;
+  static const SizeT FramePtr = RegX8632::Reg_ebp;
   static const GPRRegister Encoded_Reg_Accumulator = RegX8632::Encoded_Reg_eax;
   static const GPRRegister Encoded_Reg_Counter = RegX8632::Encoded_Reg_ecx;
   static const FixupKind PcRelFixup = llvm::ELF::R_386_PC32;
@@ -577,6 +579,14 @@ template <> struct MachineTraits<TargetX8632> {
     }
   }
 
+  static int32_t getRaxOrDie() {
+    llvm::report_fatal_error("no rax in non-64-bit mode.");
+  }

[Jim Stichnoth, 2015/12/22 15:36:16]

I would "return -1;" to avoid compiler warnings/errors that, as far as I can
tell, are only being held back due to the compiler's recognition of
__attribute__((noreturn)) or __declspec(noreturn).

[John, 2015/12/22 16:20:02]

but that's what that attribute is for... there's just something "weird" about
returning after reporting a fatal error. Besides, I want the compiler to yell if
it is unsure about report_fatal_error() terminating the program so that I can
add an exit(1) a the end of the function. In a way, the missing "return" carries
the semantic information that this function will not return at all.

+
+  static int32_t getRdxOrDie() {
+    llvm::report_fatal_error("no rdx in non-64-bit mode.");
+  }
+
   /// The maximum number of arguments to pass in XMM registers
   static const uint32_t X86_MAX_XMM_ARGS = 4;
   /// The maximum number of arguments to pass in GPR registers