From af722f8287594fe6c34813dfc2992e051db13a37 Mon Sep 17 00:00:00 2001 From: Jonas Paulsson Date: Wed, 18 Nov 2015 14:59:00 +0000 Subject: [SelectionDAGBuilder] Make sure DemoteReg ends up in right reg-class. The virtual register containing the address for returned value on stack should in the DAG be represented with a CopyFromReg node and not a Register node. Otherwise, InstrEmitter will not make sure that it ends up in the right register class for the target instruction. SystemZ needs this, becuause the reg class for address registers is a subset of the general 64 bit register class. test/SystemZ/CodeGen/args-07.ll and args-04.ll updated to run with -verify-machineinstrs. Reviewed by Hal Finkel. llvm-svn: 253461 --- llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'llvm/lib/CodeGen') diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index a699f9c56f2..50a4f247efb 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -1344,7 +1344,8 @@ void SelectionDAGBuilder::visitRet(const ReturnInst &I) { ComputeValueVTs(TLI, DL, PointerType::getUnqual(F->getReturnType()), PtrValueVTs); - SDValue RetPtr = DAG.getRegister(DemoteReg, PtrValueVTs[0]); + SDValue RetPtr = DAG.getCopyFromReg(DAG.getEntryNode(), getCurSDLoc(), + DemoteReg, PtrValueVTs[0]); SDValue RetOp = getValue(I.getOperand(0)); SmallVector ValueVTs; -- cgit v1.2.3