GlobalISel: Translate ConstantAggregateZero vectors
Reviewers: qcolombet, aditya_nandakumar, dsanders, ab, t.p.northover, javed.absar
Reviewed By: qcolombet
Subscribers: dberris, rovka, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D30259
llvm-svn: 297509
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index 5a4f950..4f9b907 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -1067,7 +1067,16 @@
EntryBuilder.buildConstant(Reg, 0);
else if (auto GV = dyn_cast<GlobalValue>(&C))
EntryBuilder.buildGlobalValue(Reg, GV);
- else if (auto CE = dyn_cast<ConstantExpr>(&C)) {
+ else if (auto CAZ = dyn_cast<ConstantAggregateZero>(&C)) {
+ if (!CAZ->getType()->isVectorTy())
+ return false;
+ std::vector<unsigned> Ops;
+ for (unsigned i = 0; i < CAZ->getNumElements(); ++i) {
+ Constant &Elt = *CAZ->getElementValue(i);
+ Ops.push_back(getOrCreateVReg(Elt));
+ }
+ EntryBuilder.buildMerge(Reg, Ops);
+ } else if (auto CE = dyn_cast<ConstantExpr>(&C)) {
switch(CE->getOpcode()) {
#define HANDLE_INST(NUM, OPCODE, CLASS) \
case Instruction::OPCODE: return translate##OPCODE(*CE, EntryBuilder);