From 71fccadbed49b555d9582198ee58301494109410 Mon Sep 17 00:00:00 2001
From: Pete Cooper <peter_cooper@apple.com>
Date: Thu, 3 Nov 2011 20:47:50 +0000
Subject: [PATCH] Reverted r143600 - selector reference change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143646 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineInstr.cpp                      | 15 ------------
 test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll | 30 -----------------------
 2 files changed, 45 deletions(-)
 delete mode 100644 test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll

diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index a2fd3c46bf0..a240667f7d6 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -1232,19 +1232,6 @@ bool MachineInstr::hasVolatileMemoryRef() const {
   return false;
 }
 
-/// pointsToRuntimeConstantMemory - Return true if this value points to data
-/// which does never changes once the program starts running
-static bool pointsToRuntimeConstantMemory(const Value *V) {
-  if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
-    StringRef Name = GV->getName();
-    // These special values are known to be constant at runtime
-    // TODO: a new linkage type for these would be far better than this check
-    if (Name.startswith("\01L_OBJC_SELECTOR_REFERENCES_"))
-      return true;
-  }
-  return false;
-}
-
 /// isInvariantLoad - Return true if this instruction is loading from a
 /// location whose value is invariant across the function.  For example,
 /// loading a value from the constant pool or from the argument area
@@ -1272,8 +1259,6 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const {
       if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V))
         if (PSV->isConstant(MFI))
           continue;
-      if (pointsToRuntimeConstantMemory(V))
-        continue;
       // If we have an AliasAnalysis, ask it whether the memory is constant.
       if (AA && AA->pointsToConstantMemory(
                       AliasAnalysis::Location(V, (*I)->getSize(),
diff --git a/test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll b/test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll
deleted file mode 100644
index bb0e0f29be9..00000000000
--- a/test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll
+++ /dev/null
@@ -1,30 +0,0 @@
-; RUN: llc < %s -march=x86-64 -mattr=+sse3,+sse41 -stats |& grep {1 machine-licm}
-; rdar://6027699
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-target triple = "x86_64-apple-macosx10.7.2"
-
-; STATS: 1 machine-licm
-
-@"\01L_OBJC_METH_VAR_NAME_" = internal global [4 x i8] c"foo\00", section "__TEXT,__objc_methname,cstring_literals", align 1
-@"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([4 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i64 0, i64 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
-@"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip"
-@llvm.used = appending global [3 x i8*] [i8* getelementptr inbounds ([4 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*), i8* bitcast ([2 x i32]* @"\01L_OBJC_IMAGE_INFO" to i8*)], section "llvm.metadata"
-
-define void @test(i8* %x) uwtable ssp {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
-  %0 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
-  %call = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %x, i8* %0)
-  %inc = add i32 %i.01, 1
-  %exitcond = icmp eq i32 %inc, 10000
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-  ret void
-}
-
-declare i8* @objc_msgSend(i8*, i8*, ...) nonlazybind
-- 
2.11.0