Fix X86/inline-asm.ll:test2, a case where an input value was implicitly

truncated.

llvm-svn: 28733

1 files changed, 6 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 57f74468ada..0a9cb637b47 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1804,9 +1804,12 @@ void RegsForValue::getCopyToRegs(SDOperand Val, SelectionDAG &DAG,
     // If there is a single register and the types differ, this must be
     // a promotion.
     if (RegVT != ValueVT) {
-      if (MVT::isInteger(RegVT))
-        Val = DAG.getNode(ISD::ANY_EXTEND, RegVT, Val);
-      else
+      if (MVT::isInteger(RegVT)) {
+        if (RegVT < ValueVT)
+          Val = DAG.getNode(ISD::TRUNCATE, RegVT, Val);
+        else
+          Val = DAG.getNode(ISD::ANY_EXTEND, RegVT, Val);
+      } else
         Val = DAG.getNode(ISD::FP_EXTEND, RegVT, Val);
     }
     Chain = DAG.getCopyToReg(Chain, Regs[0], Val, Flag);