Import LLVM 6.0.1 release including clang, lld and lldb.

"where is the kaboom?" deraadt@

1 files changed, 29 insertions, 16 deletions

diff --git a/gnu/llvm/lib/Analysis/TargetLibraryInfo.cpp b/gnu/llvm/lib/Analysis/TargetLibraryInfo.cpp
index 2be5d5caf7c..d18246ac594 100644
--- a/gnu/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/gnu/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -50,9 +50,9 @@ static bool hasSinCosPiStret(const Triple &T) {
   return true;
 }
 
-/// initialize - Initialize the set of available library functions based on the
-/// specified target triple.  This should be carefully written so that a missing
-/// target triple gets a sane set of defaults.
+/// Initialize the set of available library functions based on the specified
+/// target triple. This should be carefully written so that a missing target
+/// triple gets a sane set of defaults.
 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
                        ArrayRef<StringRef> StandardNames) {
   // Verify that the StandardNames array is in alphabetical order.
@@ -182,6 +182,9 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     TLI.setUnavailable(LibFunc_atanh);
     TLI.setUnavailable(LibFunc_atanhf);
     TLI.setUnavailable(LibFunc_atanhl);
+    TLI.setUnavailable(LibFunc_cabs);
+    TLI.setUnavailable(LibFunc_cabsf);
+    TLI.setUnavailable(LibFunc_cabsl);
     TLI.setUnavailable(LibFunc_cbrt);
     TLI.setUnavailable(LibFunc_cbrtf);
     TLI.setUnavailable(LibFunc_cbrtl);
@@ -605,7 +608,7 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
     return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
             FTy.getParamType(0) == FTy.getReturnType() &&
             FTy.getParamType(1) == FTy.getReturnType() &&
-            FTy.getParamType(2)->isIntegerTy());
+            IsSizeTTy(FTy.getParamType(2)));
 
   case LibFunc_strcpy_chk:
   case LibFunc_stpcpy_chk:
@@ -630,7 +633,7 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
     return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
             FTy.getParamType(0) == FTy.getParamType(1) &&
             FTy.getParamType(0) == PCharTy &&
-            FTy.getParamType(2)->isIntegerTy());
+            IsSizeTTy(FTy.getParamType(2)));
 
   case LibFunc_strxfrm:
     return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
@@ -645,7 +648,7 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
     return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
             FTy.getParamType(0)->isPointerTy() &&
             FTy.getParamType(0) == FTy.getParamType(1) &&
-            FTy.getParamType(2)->isIntegerTy());
+            IsSizeTTy(FTy.getParamType(2)));
 
   case LibFunc_strspn:
   case LibFunc_strcspn:
@@ -1267,6 +1270,25 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
     return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
             FTy.getReturnType()->isIntegerTy());
 
+  case LibFunc_cabs:
+  case LibFunc_cabsf:
+  case LibFunc_cabsl: {
+    Type* RetTy = FTy.getReturnType();
+    if (!RetTy->isFloatingPointTy())
+      return false;
+
+    // NOTE: These prototypes are target specific and currently support
+    // "complex" passed as an array or discrete real & imaginary parameters.
+    // Add other calling conventions to enable libcall optimizations.
+    if (NumParams == 1)
+      return (FTy.getParamType(0)->isArrayTy() &&
+              FTy.getParamType(0)->getArrayNumElements() == 2 &&
+              FTy.getParamType(0)->getArrayElementType() == RetTy);
+    else if (NumParams == 2)
+      return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
+    else
+      return false;
+  }
   case LibFunc::NumLibFuncs:
     break;
   }
@@ -1519,20 +1541,11 @@ TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(const Triple &T) {
   return *Impl;
 }
 
-unsigned TargetLibraryInfoImpl::getTargetWCharSize(const Triple &T) {
-  // See also clang/lib/Basic/Targets.cpp.
-  if (T.isPS4() || T.isOSWindows() || T.isArch16Bit())
-    return 2;
-  if (T.getArch() == Triple::xcore)
-    return 1;
-  return 4;
-}
-
 unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
       M.getModuleFlag("wchar_size")))
     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
-  return getTargetWCharSize(Triple(M.getTargetTriple()));
+  return 0;
 }
 
 TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()