Fix a bug that caused alignment information to occasionally get stripped off
of an allocation instruction when writing to bytecode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35796 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bytecode/Writer/Writer.cpp b/lib/Bytecode/Writer/Writer.cpp
index e0aa110..925ae1f 100644
--- a/lib/Bytecode/Writer/Writer.cpp
+++ b/lib/Bytecode/Writer/Writer.cpp
@@ -429,8 +429,14 @@
output_typeid(Type); // Result type
unsigned NumArgs = I->getNumOperands();
- output_vbr(NumArgs + (isa<CastInst>(I) || isa<InvokeInst>(I) ||
- isa<CmpInst>(I) || isa<VAArgInst>(I) || Opcode == 58));
+ bool HasExtraArg = false;
+ if (isa<CastInst>(I) || isa<InvokeInst>(I) ||
+ isa<CmpInst>(I) || isa<VAArgInst>(I) || Opcode == 58)
+ HasExtraArg = true;
+ if (const AllocationInst *AI = dyn_cast<AllocationInst>(I))
+ HasExtraArg = AI->getAlignment() != 0;
+
+ output_vbr(NumArgs + HasExtraArg);
if (!isa<GetElementPtrInst>(&I)) {
for (unsigned i = 0; i < NumArgs; ++i)
@@ -445,6 +451,9 @@
} else if (Opcode == 58) { // Call escape sequence
output_vbr((cast<CallInst>(I)->getCallingConv() << 1) |
unsigned(cast<CallInst>(I)->isTailCall()));
+ } else if (const AllocationInst *AI = dyn_cast<AllocationInst>(I)) {
+ if (AI->getAlignment())
+ output_vbr((unsigned)Log2_32(AI->getAlignment())+1);
}
} else {
output_vbr(Table.getSlot(I->getOperand(0)));