Revert "Add pthread_self function prototype and make it speculatable."

This reverts commit 143d7445b5dfa2f6d6c45bdbe0433d9fc531be21.

Build breaking

llvm-svn: 303496

2 files changed, 0 insertions, 21 deletions

diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index b12778278ce..2be5d5caf7c 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -349,9 +349,6 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     TLI.setUnavailable(LibFunc_atoll);
     TLI.setUnavailable(LibFunc_frexpf);
     TLI.setUnavailable(LibFunc_llabs);
-
-    // Win32 does *not* provide pthread_self.
-    TLI.setUnavailable(LibFunc_pthread_self);
   }
 
   switch (T.getOS()) {
@@ -1266,12 +1263,6 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
             FTy.getParamType(0)->isPointerTy() &&
             FTy.getParamType(1) == SizeTTy && FTy.getParamType(2) == SizeTTy);
 
-  // We do not attempt to match the return value here. i.e. thread identifiers
-  // should be considered opaque, for example, representation using either an
-  // arithmetic type or a structure is permitted. 
-  case LibFunc_pthread_self:
-    return NumParams == 0;
-
   case LibFunc_wcslen:
     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
             FTy.getReturnType()->isIntegerTy());
diff --git a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
index cf345325254..ebde1f9a17d 100644
--- a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -38,7 +38,6 @@ STATISTIC(NumNoCapture, "Number of arguments inferred as nocapture");
 STATISTIC(NumReadOnlyArg, "Number of arguments inferred as readonly");
 STATISTIC(NumNoAlias, "Number of function returns inferred as noalias");
 STATISTIC(NumNonNull, "Number of function returns inferred as nonnull returns");
-STATISTIC(NumSpeculatable, "Number of functions inferred as speculatable");
 
 static bool setDoesNotAccessMemory(Function &F) {
   if (F.doesNotAccessMemory())
@@ -72,14 +71,6 @@ static bool setDoesNotThrow(Function &F) {
   return true;
 }
 
-static bool setSpeculatable(Function &F) {
-  if (F.isSpeculatable())
-    return false;
-  F.setSpeculatable();
-  ++NumSpeculatable;
-  return true;
-}
-
 static bool setRetDoesNotAlias(Function &F) {
   if (F.hasAttribute(AttributeList::ReturnIndex, Attribute::NoAlias))
     return false;
@@ -539,9 +530,6 @@ bool llvm::inferLibFuncAttributes(Function &F, const TargetLibraryInfo &TLI) {
     Changed |= setOnlyReadsMemory(F, 0);
     Changed |= setOnlyReadsMemory(F, 1);
     return Changed;
-  case LibFunc_pthread_self:
-    Changed |= setSpeculatable(F);
-    return Changed;
   case LibFunc_vfscanf:
     Changed |= setDoesNotThrow(F);
     Changed |= setDoesNotCapture(F, 0);