Rename -disable-physical-join to -join-physregs and invert it.

Physreg joining is still on by default, but I will turn it off shortly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130844 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 35b8e14ddc6126d4d8e25be00bc5bb51c604a997..443333155594366fd476dcf875ed5a0a9aafd7df 100644 (file)
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -61,9 +61,9 @@ DisableCrossClassJoin("disable-cross-class-join",
                cl::init(false), cl::Hidden);
 
 static cl::opt<bool>
-DisablePhysicalJoin("disable-physical-join",
-               cl::desc("Avoid coalescing physical register copies"),
-               cl::init(false), cl::Hidden);
+EnablePhysicalJoin("join-physregs",
+                   cl::desc("Join physical register copies"),
+                   cl::init(true), cl::Hidden);
 
 static cl::opt<bool>
 VerifyCoalescing("verify-coalescing",
@@ -927,7 +927,7 @@ bool SimpleRegisterCoalescing::shouldJoinPhys(CoalescerPair &CP) {
   if (!Allocatable && CP.isFlipped() && JoinVInt.containsOneValue())
     return true;
 
-  if (DisablePhysicalJoin) {
+  if (!EnablePhysicalJoin) {
     DEBUG(dbgs() << "\tPhysreg joins disabled.\n");
     return false;
   }