[X86] Fix XOP vpcom intrinsic autoupgrade to map 'true' and 'false' to the correct immediates. Seems they were swapped.

llvm-svn: 229077
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index 6d53d11..0c494ef 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -460,9 +460,9 @@
         Imm = 4;
       else if (Name.startswith("ne"))
         Imm = 5;
-      else if (Name.startswith("true"))
-        Imm = 6;
       else if (Name.startswith("false"))
+        Imm = 6;
+      else if (Name.startswith("true"))
         Imm = 7;
       else
         llvm_unreachable("Unknown condition");