Treat stores as reading memory, just to play safe.

llvm-svn: 56188

"Here is a patch what replaces std::ostream with llvm::raw_ostream. This patch
covers the AST library, but ignores Analysis lib."

llvm-svn: 56185

llvm-svn: 56184

Currently it just holds the calling convention and flags
for isVarArgs and isTailCall.

And it has several utility methods, which eliminate magic
5+2*i and similar index computations in several places.

CallSDNodes are not CSE'd. Teach UpdateNodeOperands to handle
nodes that are not CSE'd gracefully.

llvm-svn: 56183

llvm-svn: 56182

llvm-svn: 56181

llvm-svn: 56180

llvm-svn: 56179

llvm-svn: 56178

llvm-svn: 56177

llvm-svn: 56176

llvm-svn: 56173

llvm-svn: 56172

llvm-svn: 56171

llvm-svn: 56170

    - llvmc2, save me!

llvm-svn: 56169

have no mapping to FILE*). We are also missing printf format
attributes for the printf style ones.

llvm-svn: 56168

llvm-svn: 56167

llvm-svn: 56166

vr2 = OR vr0, vr1
=>
vr2 = OR vr1, vr1   // after coalescing vr0 with vr1

Update the value# of the destination register with the copy instruction if that happens.

llvm-svn: 56165

llvm-svn: 56164

 - For investigating warnings in system headers / builtins.
 - Currently also enables the behavior that allows silent redefinition
   of types in system headers. Conceptually these are separate but I
   didn't feel it was worth two options (or changing LangOptions).

llvm-svn: 56163

ConstantFP* instead of APInt and APFloat directly.

This reduces the amount of time to create ConstantSDNode
and ConstantFPSDNode nodes when ConstantInt* and ConstantFP*
respectively are already available, as is the case in
SelectionDAGBuild.cpp. Also, it reduces the amount of time
to legalize constants into constant pools, and the amount of
time to add ConstantFP operands to MachineInstrs, due to
eliminating ConstantInt::get and ConstantFP::get calls.

It increases the amount of work needed to create new constants
in cases where the client doesn't already have a ConstantInt*
or ConstantFP*, such as legalize expanding 64-bit integer constants
to 32-bit constants. And it adds a layer of indirection for the
accessor methods. But these appear to be outweight by the benefits
in most cases.

It will also make it easier to make ConstantSDNode and
ConstantFPNode more consistent with ConstantInt and ConstantFP.

llvm-svn: 56162

representation; coalescer and RA need to know
about it.  No functional change.

llvm-svn: 56161

with ConstantInt. This led to fixing a bug in TargetLowering.cpp
using getValue instead of getAPIntValue.

llvm-svn: 56159

I placed it just before GVN because that it is the
pass most likely to benefit from it.  Some quick
and dirty testing confirms that this is a decent
place for it.

llvm-svn: 56144

when a readonly declaration is called, set a
flag.  This is faster and uses less memory.
In theory it is less accurate, because before
only those internal globals that were read
by someone were being marked "Ref", but now
all are.  But in practice, thanks to other
passes, all internal globals of the kind
considered here will be both read and stored
to: those only read will have been turned
into constants, and those only stored to will
have been deleted.

llvm-svn: 56143

llvm-svn: 56142

Give string literals const element typesin C++, and cope with the deprecated C++ conversion from a string literal to a pointer-to-non-const-character

llvm-svn: 56137

safe in the presence of NaNs.

llvm-svn: 56136

 - Follow C99 behavior of using other operand type when one of
   operands is a null pointer constant.
 - Fix overenthusiastic devolving of any Objective-C types to id:
   o If either operand has an Objective-C object type then:
     - If both operands are interfaces and either operand can be
       assigned to the other, use that type as the composite type.
     - Otherwise, if either type is id, use id as the composite type.
     - Otherwise, warn about incompatible types and use id as the
       composite type.
 - Return handling of qualified idea to separate test following
   general pointer type checking.
   o Upgraded from old code to allow devolving to id (without warning,
     which matches GCC).
 - <rdar://problem/6212771>

Add test case for issues fixed above, XFAIL though because it exposed
a new issue in property handling.

llvm-svn: 56135

Add comments about C++ clause 3.3.2p4 that mentions that the condition declaration should be local to an if/switch/while/for statement.

llvm-svn: 56134

getelementptr indices, inserting an explicit cast if necessary.
This helps expose the sign-extension operation to other optimizations.

llvm-svn: 56133

to an output file. This way users can both see the output of 'clang' as well as
enable background logging of files that clang encounters problems on.

llvm-svn: 56130

Patch by Nicolas Capens!

llvm-svn: 56129

llvm-svn: 56127

llvm-svn: 56126

scan-build now correctly processes path prefixes that contain multiple '+'
characters or other regex control characters.

llvm-svn: 56121

When tailcallopt is enabled all fastcc calls must have an aligned argument stack size. Add a test case.

llvm-svn: 56119

Fix PR2748. Avoid coalescing physical register with virtual register which would create illegal extract_subreg. e.g.
vr1024 = extract_subreg vr1025, 1
...
vr1024 = mov8rr AH
If vr1024 is coalesced with AH, the extract_subreg is now illegal since AH does not have a super-reg whose sub-register 1 is AH.

llvm-svn: 56118