legalize readio/writeio into load/stores, fixing CodeGen/X86/io.llx with

the pattern isel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21828 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelPattern.cpp b/lib/Target/X86/X86ISelPattern.cpp
index d4b2b1a99e8f828ecdd7fe0d45796eef76147570..584d4af3ef01b2170365858b92d7ffed0329465a 100644 (file)
--- a/lib/Target/X86/X86ISelPattern.cpp
+++ b/lib/Target/X86/X86ISelPattern.cpp
@@ -70,6 +70,15 @@ namespace {
       setOperationAction(ISD::CTTZ             , MVT::i32  , Expand);
       setOperationAction(ISD::CTLZ             , MVT::i32  , Expand);
 
+      setOperationAction(ISD::READIO           , MVT::i1   , Expand);
+      setOperationAction(ISD::READIO           , MVT::i8   , Expand);
+      setOperationAction(ISD::READIO           , MVT::i16  , Expand);
+      setOperationAction(ISD::READIO           , MVT::i32  , Expand);
+      setOperationAction(ISD::WRITEIO          , MVT::i1   , Expand);
+      setOperationAction(ISD::WRITEIO          , MVT::i8   , Expand);
+      setOperationAction(ISD::WRITEIO          , MVT::i16  , Expand);
+      setOperationAction(ISD::WRITEIO          , MVT::i32  , Expand);
+
       if (!UnsafeFPMath) {
         setOperationAction(ISD::FSIN           , MVT::f64  , Expand);
         setOperationAction(ISD::FCOS           , MVT::f64  , Expand);