[llvm-commits] [llvm] r76519 - in /llvm/trunk: lib/CodeGen/SimpleRegisterCoalescing.cpp test/CodeGen/X86/subclass-coalesce.ll

[Evan Cheng]

Author: evancheng
Date: Mon Jul 20 19:22:59 2009
New Revision: 76519

URL: http://llvm.org/viewvc/llvm-project?rev=76519&view=rev
Log:
Cross RC coalescing is now on by default.

Modified:
    llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
    llvm/trunk/test/CodeGen/X86/subclass-coalesce.ll

Modified: llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp?rev=76519&r1=76518&r2=76519&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp (original)
+++ llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp Mon Jul 20 19:22:59 2009
@@ -57,9 +57,9 @@
              cl::init(false), cl::Hidden);
 
 static cl::opt<bool>
-CrossClassJoin("join-cross-class-copies",
-               cl::desc("Coalesce cross register class copies"),
-               cl::init(true), cl::Hidden);
+DisableCrossClassJoin("disable-cross-class-join",
+               cl::desc("Avoid coalescing cross register class copies"),
+               cl::init(false), cl::Hidden);
 
 static cl::opt<bool>
 PhysJoinTweak("tweak-phys-join-heuristics",
@@ -1401,7 +1401,7 @@
       }
     }
   } else if (differingRegisterClasses(SrcReg, DstReg)) {
-    if (!CrossClassJoin)
+    if (DisableCrossClassJoin)
       return false;
     CrossRC = true;
 

Modified: llvm/trunk/test/CodeGen/X86/subclass-coalesce.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/subclass-coalesce.ll?rev=76519&r1=76518&r2=76519&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/subclass-coalesce.ll (original)
+++ llvm/trunk/test/CodeGen/X86/subclass-coalesce.ll Mon Jul 20 19:22:59 2009
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -march=x86 -join-cross-class-copies -stats |& grep {Number of cross class joins performed}
+; RUN: llvm-as < %s | llc -march=x86 -stats |& grep {Number of cross class joins performed}
 
 @mem.6 = external global i64		; <i64*> [#uses=1]