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Add a bit to MachineRelocation that tells JIT that target is responsible for resolving the address. e.g. ARM constpool.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58405 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-10-29 23:53:42 +00:00
parent 110e3b3d1b
commit 70ba70f065
1 changed files with 18 additions and 4 deletions
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22
include/llvm/CodeGen/MachineRelocation.h
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@ -63,10 +63,11 @@ class MachineRelocation {
unsigned GOTIndex; // Index in the GOT of this symbol/global
} Target;
unsigned TargetReloType : 6; // The target relocation ID.
AddressType AddrType : 4; // The field of Target to use.
bool NeedStub : 1; // True if this relocation requires a stub.
unsigned TargetReloType : 6; // The target relocation ID
AddressType AddrType : 4; // The field of Target to use
bool NeedStub : 1; // True if this relocation requires a stub
bool GOTRelative : 1; // Should this relocation be relative to the GOT?
bool TargetResolve : 1; // True if target should resolve the address
public:
// Relocation types used in a generic implementation. Currently, relocation
@ -90,6 +91,7 @@ public:
Result.AddrType = isGV;
Result.NeedStub = NeedStub;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.GV = GV;
return Result;
}
@ -109,6 +111,7 @@ public:
Result.AddrType = isGVLazyPtr;
Result.NeedStub = NeedStub;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.GV = GV;
return Result;
}
@ -125,6 +128,7 @@ public:
Result.AddrType = isBB;
Result.NeedStub = false;
Result.GOTRelative = false;
Result.TargetResolve = false;
Result.Target.MBB = MBB;
return Result;
}
@ -143,6 +147,7 @@ public:
Result.AddrType = isExtSym;
Result.NeedStub = true;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
Result.Target.ExtSym = ES;
return Result;
}
@ -151,7 +156,8 @@ public:
/// pool entry.
///
static MachineRelocation getConstPool(intptr_t offset,unsigned RelocationType,
unsigned CPI, intptr_t cst = 0) {
unsigned CPI, intptr_t cst = 0,
bool letTargetResolve = false) {
assert((RelocationType & ~63) == 0 && "Relocation type too large!");
MachineRelocation Result;
Result.Offset = offset;
@ -160,6 +166,7 @@ public:
Result.AddrType = isConstPool;
Result.NeedStub = false;
Result.GOTRelative = false;
Result.TargetResolve = letTargetResolve;
Result.Target.Index = CPI;
return Result;
}
@ -177,6 +184,7 @@ public:
Result.AddrType = isJumpTable;
Result.NeedStub = false;
Result.GOTRelative = false;
Result.TargetResolve = false;
Result.Target.Index = JTI;
return Result;
}
@ -257,6 +265,12 @@ public:
return !NeedStub;
}
/// letTargetResolve - Return true if the target JITInfo is usually
/// responsible for resolving the address of this relocation.
bool letTargetResolve() const {
return TargetResolve;
}
/// getGlobalValue - If this is a global value reference, return the
/// referenced global.
GlobalValue *getGlobalValue() const {