[llvm-commits] [llvm] r124073 - in /llvm/trunk/lib: Analysis/ProfileInfo.cpp CodeGen/SelectionDAG/SelectionDAG.cpp Support/APFloat.cpp Target/ARM/ARMExpandPseudoInsts.cpp Target/CellSPU/SPUISelDAGToDAG.cpp Target/X86/Disassembler/X86DisassemblerDecoder.c Transforms/InstCombine/InstCombineShifts.cpp

[Ted Kremenek]

Author: kremenek
Date: Sun Jan 23 11:05:06 2011
New Revision: 124073

URL: http://llvm.org/viewvc/llvm-project?rev=124073&view=rev
Log:
Null initialize a few variables flagged by
clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

Modified:
    llvm/trunk/lib/Analysis/ProfileInfo.cpp
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    llvm/trunk/lib/Support/APFloat.cpp
    llvm/trunk/lib/Target/ARM/ARMExpandPseudoInsts.cpp
    llvm/trunk/lib/Target/CellSPU/SPUISelDAGToDAG.cpp
    llvm/trunk/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
    llvm/trunk/lib/Transforms/InstCombine/InstCombineShifts.cpp

Modified: llvm/trunk/lib/Analysis/ProfileInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ProfileInfo.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ProfileInfo.cpp (original)
+++ llvm/trunk/lib/Analysis/ProfileInfo.cpp Sun Jan 23 11:05:06 2011
@@ -889,7 +889,7 @@
     FI = Unvisited.begin(), FE = Unvisited.end();
     while(FI != FE && !FoundPath) {
       const BasicBlock *BB = *FI; ++FI;
-      const BasicBlock *Dest;
+      const BasicBlock *Dest = 0;
       Path P;
       bool BackEdgeFound = false;
       for (const_pred_iterator NBB = pred_begin(BB), End = pred_end(BB);

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Sun Jan 23 11:05:06 2011
@@ -4931,7 +4931,7 @@
                              const SDValue *Ops, unsigned NumOps) {
   bool DoCSE = VTs.VTs[VTs.NumVTs-1] != MVT::Glue;
   MachineSDNode *N;
-  void *IP;
+  void *IP = 0;
 
   if (DoCSE) {
     FoldingSetNodeID ID;

Modified: llvm/trunk/lib/Support/APFloat.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/APFloat.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Support/APFloat.cpp (original)
+++ llvm/trunk/lib/Support/APFloat.cpp Sun Jan 23 11:05:06 2011
@@ -175,7 +175,7 @@
 {
   int unsignedExponent;
   bool negative, overflow;
-  int exponent;
+  int exponent = 0;
 
   assert(p != end && "Exponent has no digits");
 

Modified: llvm/trunk/lib/Target/ARM/ARMExpandPseudoInsts.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMExpandPseudoInsts.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMExpandPseudoInsts.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMExpandPseudoInsts.cpp Sun Jan 23 11:05:06 2011
@@ -518,7 +518,7 @@
   }
   assert(Lane < RegElts && "out of range lane for VLD/VST-lane");
 
-  unsigned D0, D1, D2, D3;
+  unsigned D0 = 0, D1 = 0, D2 = 0, D3 = 0;
   unsigned DstReg = 0;
   bool DstIsDead = false;
   if (TableEntry->IsLoad) {

Modified: llvm/trunk/lib/Target/CellSPU/SPUISelDAGToDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/CellSPU/SPUISelDAGToDAG.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Target/CellSPU/SPUISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/CellSPU/SPUISelDAGToDAG.cpp Sun Jan 23 11:05:06 2011
@@ -612,7 +612,7 @@
 SPUDAGToDAGISel::Select(SDNode *N) {
   unsigned Opc = N->getOpcode();
   int n_ops = -1;
-  unsigned NewOpc;
+  unsigned NewOpc = 0;
   EVT OpVT = N->getValueType(0);
   SDValue Ops[8];
   DebugLoc dl = N->getDebugLoc();

Modified: llvm/trunk/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c (original)
+++ llvm/trunk/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c Sun Jan 23 11:05:06 2011
@@ -290,7 +290,7 @@
   BOOL isPrefix = TRUE;
   BOOL prefixGroups[4] = { FALSE };
   uint64_t prefixLocation;
-  uint8_t byte;
+  uint8_t byte = 0;
   
   BOOL hasAdSize = FALSE;
   BOOL hasOpSize = FALSE;

Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineShifts.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineShifts.cpp?rev=124073&r1=124072&r2=124073&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineShifts.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineShifts.cpp Sun Jan 23 11:05:06 2011
@@ -76,7 +76,7 @@
   // if the needed bits are already zero in the input.  This allows us to reuse
   // the value which means that we don't care if the shift has multiple uses.
   //  TODO:  Handle opposite shift by exact value.
-  ConstantInt *CI;
+  ConstantInt *CI = 0;
   if ((isLeftShift && match(I, m_LShr(m_Value(), m_ConstantInt(CI)))) ||
       (!isLeftShift && match(I, m_Shl(m_Value(), m_ConstantInt(CI))))) {
     if (CI->getZExtValue() == NumBits) {