Remove A6/A7 opcode maps. They can all be handled with a TB map, opcode of 0xa6/0xa7...

[oota-llvm.git] / lib / Target / X86 / X86SelectionDAGInfo.cpp

diff --git a/lib/Target/X86/X86SelectionDAGInfo.cpp b/lib/Target/X86/X86SelectionDAGInfo.cpp
index 757e8c70a44bd32090c6c15d7f1ba1f5cd3a8926..b9c620fddc440acd6a967739ba548764df7ea9c6 100644 (file)
--- a/lib/Target/X86/X86SelectionDAGInfo.cpp
+++ b/lib/Target/X86/X86SelectionDAGInfo.cpp
@@ -27,7 +27,7 @@ X86SelectionDAGInfo::~X86SelectionDAGInfo() {
 }
 
 SDValue
-X86SelectionDAGInfo::EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
+X86SelectionDAGInfo::EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc dl,
                                              SDValue Chain,
                                              SDValue Dst, SDValue Src,
                                              SDValue Size, unsigned Align,
@@ -46,8 +46,6 @@ X86SelectionDAGInfo::EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
       !ConstantSize ||
       ConstantSize->getZExtValue() >
         Subtarget->getMaxInlineSizeThreshold()) {
-    SDValue InFlag(0, 0);
-
     // Check to see if there is a specialized entry-point for memory zeroing.
     ConstantSDNode *V = dyn_cast<ConstantSDNode>(Src);
 
@@ -175,7 +173,7 @@ X86SelectionDAGInfo::EmitTargetCodeForMemset(SelectionDAG &DAG, DebugLoc dl,
 }
 
 SDValue
-X86SelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
+X86SelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, SDLoc dl,
                                         SDValue Chain, SDValue Dst, SDValue Src,
                                         SDValue Size, unsigned Align,
                                         bool isVolatile, bool AlwaysInline,
@@ -202,6 +200,14 @@ X86SelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
       SrcPtrInfo.getAddrSpace() >= 256)
     return SDValue();
 
+  // ESI might be used as a base pointer, in that case we can't simply overwrite
+  // the register.  Fall back to generic code.
+  const X86RegisterInfo *TRI =
+      static_cast<const X86RegisterInfo *>(DAG.getTarget().getRegisterInfo());
+  if (TRI->hasBasePointer(DAG.getMachineFunction()) &&
+      TRI->getBaseRegister() == X86::ESI)
+    return SDValue();
+
   MVT AVT;
   if (Align & 1)
     AVT = MVT::i8;