From dcc6608aa6ee004f16cf96625b4e620166f71540 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 24 Nov 2008 17:22:52 +0000
Subject: [PATCH] Run post-RA scheduling after branch folding, as it tends to
 obscure tail-merging opportunities.

llvm-svn: 59967
---
 lib/CodeGen/LLVMTargetMachine.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index e10be696142..e6873923bcc 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -222,6 +222,13 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, bool Fast) {
   // Insert prolog/epilog code.  Eliminate abstract frame index references...
   PM.add(createPrologEpilogCodeInserter());
 
+  if (PrintMachineCode)
+    PM.add(createMachineFunctionPrinterPass(cerr));
+
+  // Branch folding must be run after regalloc and prolog/epilog insertion.
+  if (!Fast)
+    PM.add(createBranchFoldingPass(getEnableTailMergeDefault()));
+
   if (PrintMachineCode)
     PM.add(createMachineFunctionPrinterPass(cerr));
 
@@ -233,10 +240,6 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, bool Fast) {
       PM.add(createMachineFunctionPrinterPass(cerr));
   }
 
-  // Branch folding must be run after regalloc and prolog/epilog insertion.
-  if (!Fast)
-    PM.add(createBranchFoldingPass(getEnableTailMergeDefault()));
-
   PM.add(createGCMachineCodeAnalysisPass());
 
   if (PrintMachineCode)