JumpTable support! What this represents is working asm and jit support for
x86 and ppc for 100% dense switch statements when relocations are non-PIC.
This support will be extended and enhanced in the coming days to support
PIC, and less dense forms of jump tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27947 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineCodeEmitter.cpp b/lib/CodeGen/MachineCodeEmitter.cpp
index d37fef4..4243076 100644
--- a/lib/CodeGen/MachineCodeEmitter.cpp
+++ b/lib/CodeGen/MachineCodeEmitter.cpp
@@ -56,6 +56,7 @@
{ return 0; }
uint64_t getConstantPoolEntryAddress(unsigned Num) { return 0; }
+ uint64_t getJumpTableEntryAddress(unsigned Num) { return 0; }
uint64_t getCurrentPCValue() { return 0; }
uint64_t getCurrentPCOffset() { return 0; }
};
@@ -97,7 +98,14 @@
void emitConstantPool(MachineConstantPool *MCP) {
MCE.emitConstantPool(MCP);
}
-
+ void initJumpTableInfo(MachineJumpTableInfo *MJTI) {
+ MCE.initJumpTableInfo(MJTI);
+ }
+ void emitJumpTableInfo(MachineJumpTableInfo *MJTI,
+ std::map<MachineBasicBlock*,uint64_t> &MBBM) {
+ MCE.emitJumpTableInfo(MJTI, MBBM);
+ }
+
void startFunctionStub(unsigned StubSize) {
MCE.startFunctionStub(StubSize);
}
@@ -146,7 +154,9 @@
uint64_t getConstantPoolEntryAddress(unsigned Num) {
return MCE.getConstantPoolEntryAddress(Num);
}
-
+ uint64_t getJumpTableEntryAddress(unsigned Num) {
+ return MCE.getJumpTableEntryAddress(Num);
+ }
virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment)
{ return MCE.allocateGlobal(size, alignment); }