From 7669c97ba622ae8752f620bc1b47e385cb264b7a Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@apple.com>
Date: Mon, 21 Dec 2009 08:15:29 +0000
Subject: Fix setting and default setting of code model for jit. Do this by
 allowing backends to override routines that will default the JIT and Static
 code generation to an appropriate code model for the architecture.

Should fix PR 5773.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91824 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/LLVMTargetMachine.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'lib/CodeGen/LLVMTargetMachine.cpp')

diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index 297dd31..d5fd051 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -83,7 +83,18 @@ LLVMTargetMachine::LLVMTargetMachine(const Target &T,
   AsmInfo = T.createAsmInfo(TargetTriple);
 }
 
+// Set the default code model for the JIT for a generic target.
+// FIXME: Is small right here? or .is64Bit() ? Large : Small?
+void
+LLVMTargetMachine::setCodeModelForJIT() {
+  setCodeModel(CodeModel::Small);
+}
 
+// Set the default code model for static compilation for a generic target.
+void
+LLVMTargetMachine::setCodeModelForStatic() {
+  setCodeModel(CodeModel::Small);
+}
 
 FileModel::Model
 LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
@@ -130,6 +141,9 @@ bool LLVMTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
 bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
                                                   MachineCodeEmitter *MCE,
                                                   CodeGenOpt::Level OptLevel) {
+  // Make sure the code model is set.
+  setCodeModelForStatic();
+  
   if (MCE)
     addSimpleCodeEmitter(PM, OptLevel, *MCE);
   if (PrintEmittedAsm)
@@ -146,6 +160,9 @@ bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
 bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
                                                   JITCodeEmitter *JCE,
                                                   CodeGenOpt::Level OptLevel) {
+  // Make sure the code model is set.
+  setCodeModelForJIT();
+  
   if (JCE)
     addSimpleCodeEmitter(PM, OptLevel, *JCE);
   if (PrintEmittedAsm)
@@ -162,6 +179,9 @@ bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
 bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
                                                   ObjectCodeEmitter *OCE,
                                                   CodeGenOpt::Level OptLevel) {
+  // Make sure the code model is set.
+  setCodeModelForStatic();
+  
   if (OCE)
     addSimpleCodeEmitter(PM, OptLevel, *OCE);
   if (PrintEmittedAsm)
@@ -181,6 +201,9 @@ bool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM,
 bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
                                                    MachineCodeEmitter &MCE,
                                                    CodeGenOpt::Level OptLevel) {
+  // Make sure the code model is set.
+  setCodeModelForJIT();
+  
   // Add common CodeGen passes.
   if (addCommonCodeGenPasses(PM, OptLevel))
     return true;
@@ -203,6 +226,9 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
 bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
                                                    JITCodeEmitter &JCE,
                                                    CodeGenOpt::Level OptLevel) {
+  // Make sure the code model is set.
+  setCodeModelForJIT();
+  
   // Add common CodeGen passes.
   if (addCommonCodeGenPasses(PM, OptLevel))
     return true;
-- 
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