Introduce a new technique for merging BasicBlock with Instruction sentinel by superpo...

[oota-llvm.git] / lib / Target / X86 / X86TargetAsmInfo.cpp

diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 1cf859b3b88c6c0ef182c8d275e231bfa8e75113..226feb7c1e6c0dc3c0feb6651da2bb4f05cb1377 100644 (file)
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -70,9 +70,7 @@ X86DarwinTargetAsmInfo::X86DarwinTargetAsmInfo(const X86TargetMachine &TM):
   COMMDirectiveTakesAlignment = (Subtarget->getDarwinVers() >= 9);
   HasDotTypeDotSizeDirective = false;
   HasSingleParameterDotFile = false;
-  FDEEncodingRequiresSData4 = false;
   NonLocalEHFrameLabel = true;
-  Force32BitFDEReference = false;
   if (TM.getRelocationModel() == Reloc::Static) {
     StaticCtorsSection = ".constructor";
     StaticDtorsSection = ".destructor";
@@ -413,11 +411,21 @@ bool X86TargetAsmInfo<BaseTAI>::ExpandInlineAsm(CallInst *CI) const {
 
     // bswap $0
     if (AsmPieces.size() == 2 &&
-        AsmPieces[0] == "bswap" && AsmPieces[1] == "$0") {
+        AsmPieces[0] == "bswap" && (AsmPieces[1] == "$0" ||
+                                    AsmPieces[1] == "${0:q}")) {
       // No need to check constraints, nothing other than the equivalent of
       // "=r,0" would be valid here.
       return LowerToBSwap(CI);
     }
+    // rorw $$8, ${0:w}  -->  llvm.bswap.i16
+    if (CI->getType() == Type::Int16Ty &&
+        AsmPieces.size() == 3 &&
+        AsmPieces[0] == "rorw" &&
+        AsmPieces[1] == "$$8," &&
+        AsmPieces[2] == "${0:w}" &&
+        IA->getConstraintString() == "=r,0,~{dirflag},~{fpsr},~{flags},~{cc}") {
+      return LowerToBSwap(CI);
+    }
     break;
   case 3:
     if (CI->getType() == Type::Int64Ty && Constraints.size() >= 2 &&