[CodeGen] When Promoting, don't extend the 2nd FCOPYSIGN operand.

[oota-llvm.git] / utils / TableGen / AsmMatcherEmitter.cpp

diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 0d7c5ffbea1cf43da7f0599e2bfe62ffa170d245..8403aa56556aeccdcce4ca5f6e38f5bfdf8ba5ad 100644 (file)
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -460,6 +460,20 @@ struct MatchableInfo {
         TheDef->getValueAsBit("UseInstAsmMatchConverter")) {
   }
 
+  // Could remove this and the dtor if PointerUnion supported unique_ptr
+  // elements with a dynamic failure/assertion (like the one below) in the case
+  // where it was copied while being in an owning state.
+  MatchableInfo(const MatchableInfo &RHS)
+      : AsmVariantID(RHS.AsmVariantID), AsmString(RHS.AsmString),
+        TheDef(RHS.TheDef), DefRec(RHS.DefRec), ResOperands(RHS.ResOperands),
+        Mnemonic(RHS.Mnemonic), AsmOperands(RHS.AsmOperands),
+        RequiredFeatures(RHS.RequiredFeatures),
+        ConversionFnKind(RHS.ConversionFnKind),
+        HasDeprecation(RHS.HasDeprecation),
+        UseInstAsmMatchConverter(RHS.UseInstAsmMatchConverter) {
+    assert(!DefRec.is<const CodeGenInstAlias *>());
+  }
+
   ~MatchableInfo() {
     delete DefRec.dyn_cast<const CodeGenInstAlias*>();
   }
@@ -870,12 +884,13 @@ void MatchableInfo::tokenizeAsmString(const AsmMatcherInfo &Info) {
         InTok = false;
       }
 
-      // If this isn't "${", treat like a normal token.
+      // If this isn't "${", start new identifier looking like "$xxx"
       if (i + 1 == String.size() || String[i + 1] != '{') {
         Prev = i;
         break;
       }
 
+      // If this is "${" find the next "}" and make an identifier like "${xxx}"
       StringRef::iterator End = std::find(String.begin() + i, String.end(),'}');
       assert(End != String.end() && "Missing brace in operand reference!");
       size_t EndPos = End - String.begin();