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
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 90d9083..c22c9fe 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -95,10 +95,6 @@
assert(getRelocationModel() != Reloc::Default &&
"Relocation mode not picked");
- // If no code model is picked, default to small.
- if (getCodeModel() == CodeModel::Default)
- setCodeModel(CodeModel::Small);
-
// ELF and X86-64 don't have a distinct DynamicNoPIC model. DynamicNoPIC
// is defined as a model for code which may be used in static or dynamic
// executables but not necessarily a shared library. On X86-32 we just
@@ -188,10 +184,6 @@
Subtarget.setPICStyle(PICStyles::None);
}
- // 64-bit JIT places everything in the same buffer except external functions.
- if (Subtarget.is64Bit())
- setCodeModel(CodeModel::Large);
-
PM.add(createX86CodeEmitterPass(*this, MCE));
return false;
@@ -208,9 +200,6 @@
Subtarget.setPICStyle(PICStyles::None);
}
- // 64-bit JIT places everything in the same buffer except external functions.
- if (Subtarget.is64Bit())
- setCodeModel(CodeModel::Large);
PM.add(createX86JITCodeEmitterPass(*this, JCE));
@@ -244,3 +233,23 @@
PM.add(createX86ObjectCodeEmitterPass(*this, OCE));
return false;
}
+
+void X86TargetMachine::setCodeModelForStatic() {
+
+ if (getCodeModel() != CodeModel::Default) return;
+
+ // For static codegen, if we're not already set, use Small codegen.
+ setCodeModel(CodeModel::Small);
+}
+
+
+void X86TargetMachine::setCodeModelForJIT() {
+
+ if (getCodeModel() != CodeModel::Default) return;
+
+ // 64-bit JIT places everything in the same buffer except external functions.
+ if (Subtarget.is64Bit())
+ setCodeModel(CodeModel::Large);
+ else
+ setCodeModel(CodeModel::Small);
+}