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
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(),
+++ /dev/null
-; 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