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Make it clear in the LangRef that allocation instructions only operated on the generic address space. Implement support in the verifier for ensuring this is true.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45080 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christopher Lamb 2007-12-17 01:00:21 +00:00
parent 17af357779
commit 303dae993a
2 changed files with 16 additions and 2 deletions
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10
docs/LangRef.html
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@ -2671,7 +2671,8 @@ allocate, and free memory in LLVM.</p>
<h5>Overview:</h5>
<p>The '<tt>malloc</tt>' instruction allocates memory from the system
heap and returns a pointer to it.</p>
heap and returns a pointer to it. The object is always allocated in the generic
address space (address space zero).</p>
<h5>Arguments:</h5>
@ -2758,7 +2759,8 @@ after this instruction executes.</p>
<p>The '<tt>alloca</tt>' instruction allocates memory on the stack frame of the
currently executing function, to be automatically released when this function
returns to its caller.</p>
returns to its caller. The object is always allocated in the generic address
space (address space zero).</p>
<h5>Arguments:</h5>
@ -3972,6 +3974,10 @@ Front-ends for type-safe garbage collected languages should generate these
intrinsics to make use of the LLVM garbage collectors. For more details, see <a
href="GarbageCollection.html">Accurate Garbage Collection with LLVM</a>.
</p>
<p>The garbage collection intrinsics only operate on objects in the generic
address space (address space zero).</p>
</div>
<!-- _______________________________________________________________________ -->

8
lib/VMCore/Verifier.cpp
View File

@ -254,6 +254,7 @@ namespace { // Anonymous namespace for class
void visitUserOp1(Instruction &I);
void visitUserOp2(Instruction &I) { visitUserOp1(I); }
void visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI);
void visitAllocationInst(AllocationInst &AI);
void VerifyIntrinsicPrototype(Intrinsic::ID ID, Function *F,
unsigned Count, ...);
@ -987,6 +988,13 @@ void Verifier::visitStoreInst(StoreInst &SI) {
visitInstruction(SI);
}
void Verifier::visitAllocationInst(AllocationInst &AI) {
const PointerType *Ptr = AI.getType();
Assert(Ptr->getAddressSpace() == 0,
"Allocation instruction pointer not in the generic address space!");
visitInstruction(AI);
}
/// verifyInstruction - Verify that an instruction is well formed.
///