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JumpTable support! What this represents is working asm and jit support for

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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
This commit is contained in:
Nate Begeman
2006-04-22 18:53:45 +00:00
parent 1900c012f5
commit 37efe67645
40 changed files with 717 additions and 77 deletions
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14
lib/CodeGen/MachineCodeEmitter.cpp
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@@ -56,6 +56,7 @@ namespace {
{ 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 @@ namespace {
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 @@ namespace {
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); }