From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 22 Oct 2009 06:48:32 +0000 (+0000)
Subject: Move if-conversion before post-regalloc scheduling so the predicated instruction... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=87689d3b7049ecfa41de24a310bac7365c2dbcde;p=oota-llvm.git

Move if-conversion before post-regalloc scheduling so the predicated instruction get scheduled properly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84843 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp
index c1da6ce88b9..bd2e7347d4f 100644
--- a/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/lib/Target/ARM/ARMTargetMachine.cpp
@@ -103,18 +103,16 @@ bool ARMBaseTargetMachine::addPreRegAlloc(PassManagerBase &PM,
 bool ARMBaseTargetMachine::addPreSched2(PassManagerBase &PM,
                                         CodeGenOpt::Level OptLevel) {
   // FIXME: temporarily disabling load / store optimization pass for Thumb1.
-  if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only())
+  if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only()) {
     PM.add(createARMLoadStoreOptimizationPass());
+    PM.add(createIfConverterPass());
+  }
 
   return true;
 }
 
 bool ARMBaseTargetMachine::addPreEmitPass(PassManagerBase &PM,
                                           CodeGenOpt::Level OptLevel) {
-  // FIXME: temporarily disabling load / store optimization pass for Thumb1.
-  if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only())
-    PM.add(createIfConverterPass());
-
   if (Subtarget.isThumb2()) {
     PM.add(createThumb2ITBlockPass());
     PM.add(createThumb2SizeReductionPass());
diff --git a/test/CodeGen/ARM/ifcvt5.ll b/test/CodeGen/ARM/ifcvt5.ll
index e9145ac36dd..92bbe75baac 100644
--- a/test/CodeGen/ARM/ifcvt5.ll
+++ b/test/CodeGen/ARM/ifcvt5.ll
@@ -11,7 +11,8 @@ entry:
 
 define void @t1(i32 %a, i32 %b) {
 ; CHECK: t1:
-; CHECK: ldmltfd sp!, {r7, pc}
+; CHECK: movge
+; CHECK: blge _foo
 entry:
 	%tmp1 = icmp sgt i32 %a, 10		; <i1> [#uses=1]
 	br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock