Changes in directory llvm/lib/CodeGen:
Passes.cpp updated: 1.17 -> 1.18
---
Log message:
Working toward registration of register allocators.
---
Diffs of the changes: (+47 -11)
Passes.cpp | 58 +++++++++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 47 insertions(+), 11 deletions(-)
Index: llvm/lib/CodeGen/Passes.cpp
diff -u llvm/lib/CodeGen/Passes.cpp:1.17 llvm/lib/CodeGen/Passes.cpp:1.18
--- llvm/lib/CodeGen/Passes.cpp:1.17 Thu Jul 20 12:28:38 2006
+++ llvm/lib/CodeGen/Passes.cpp Thu Jul 27 15:05:00 2006
@@ -13,6 +13,7 @@
//===---------------------------------------------------------------------===//
#include "llvm/CodeGen/Passes.h"
+#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include <iostream>
using namespace llvm;
@@ -33,17 +34,52 @@
cl::init(linearscan));
}
-FunctionPass *llvm::createRegisterAllocator() {
- switch (RegAlloc) {
- default:
- std::cerr << "no register allocator selected";
- abort();
- case simple:
- return createSimpleRegisterAllocator();
- case local:
- return createLocalRegisterAllocator();
- case linearscan:
- return createLinearScanRegisterAllocator();
+
+RegisterRegAlloc *RegisterRegAlloc::List = NULL;
+
+/// Find - Finds a register allocator in registration list.
+///
+RegisterRegAlloc::FunctionPassCtor RegisterRegAlloc::Find(const char *N) {
+ for (RegisterRegAlloc *RA = List; RA; RA = RA->Next) {
+ if (strcmp(N, RA->Name) == 0) return RA->Ctor;
}
+ return NULL;
}
+
+#ifndef NDEBUG
+void RegisterRegAlloc::print() {
+ for (RegisterRegAlloc *RA = List; RA; RA = RA->Next) {
+ std::cerr << "RegAlloc:" << RA->Name << "\n";
+ }
+}
+#endif
+
+
+static RegisterRegAlloc
+ simpleRegAlloc("simple", " simple register allocator",
+ createSimpleRegisterAllocator);
+
+static RegisterRegAlloc
+ localRegAlloc("local", " local register allocator",
+ createLocalRegisterAllocator);
+
+static RegisterRegAlloc
+ linearscanRegAlloc("linearscan", "linear scan register allocator",
+ createLinearScanRegisterAllocator);
+
+
+FunctionPass *llvm::createRegisterAllocator() {
+ const char *Names[] = {"simple", "local", "linearscan"};
+ const char *DefltName = "linearscan";
+
+ RegisterRegAlloc::FunctionPassCtor Ctor =
+ RegisterRegAlloc::Find(Names[RegAlloc]);
+ if (!Ctor) Ctor = RegisterRegAlloc::Find(DefltName);
+
+ assert(Ctor && "No register allocator found");
+
+ return Ctor();
+}
+
+
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