Re-apply bottom-up fast-isel, with fixes. Be very careful to avoid emitting
a DBG_VALUE after a terminator, or emitting any instructions before an EH_LABEL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107943 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 8c4211a..3030017 100644
--- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -78,6 +78,13 @@
MF = &mf;
RegInfo = &MF->getRegInfo();
+ // Check whether the function can return without sret-demotion.
+ SmallVector<ISD::OutputArg, 4> Outs;
+ GetReturnInfo(Fn->getReturnType(),
+ Fn->getAttributes().getRetAttributes(), Outs, TLI);
+ CanLowerReturn = TLI.CanLowerReturn(Fn->getCallingConv(), Fn->isVarArg(),
+ Outs, Fn->getContext());
+
// Create a vreg for each argument register that is not dead and is used
// outside of the entry block for the function.
for (Function::const_arg_iterator AI = Fn->arg_begin(), E = Fn->arg_end();
@@ -170,6 +177,7 @@
#endif
LiveOutRegInfo.clear();
ArgDbgValues.clear();
+ RegFixups.clear();
}
/// CreateReg - Allocate a single virtual register for the given type.