GlobalISel: support translation of extractvalue instructions.
llvm-svn: 279285
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index ac95b82..ed0ce8d 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -182,6 +182,27 @@
return true;
}
+bool IRTranslator::translateExtractValue(const User &U) {
+ const ExtractValueInst &EVI = cast<ExtractValueInst>(U);
+ const Value *Src = EVI.getAggregateOperand();
+ Type *Int32Ty = Type::getInt32Ty(EVI.getContext());
+ SmallVector<Value *, 1> Indices;
+
+ // getIndexedOffsetInType is designed for GEPs, so the first index is the
+ // usual array element rather than looking into the actual aggregate.
+ Indices.push_back(ConstantInt::get(Int32Ty, 0));
+ for (auto Idx : EVI.indices())
+ Indices.push_back(ConstantInt::get(Int32Ty, Idx));
+
+ uint64_t Offset = 8 * DL->getIndexedOffsetInType(Src->getType(), Indices);
+
+ unsigned Res = getOrCreateVReg(EVI);
+ MIRBuilder.buildExtract(LLT{*EVI.getType()}, Res, getOrCreateVReg(*Src),
+ Offset);
+
+ return true;
+}
+
bool IRTranslator::translateBitCast(const User &U) {
if (LLT{*U.getOperand(0)->getType()} == LLT{*U.getType()}) {
unsigned &Reg = ValToVReg[&U];