[NFC] fix trivial typos in documents and comments

"is is" -> "is", "if if" -> "if", "or or" -> "or"

llvm-svn: 329878

docs/AMDGPUUsage.rst

@@ -2269,7 +2269,7 @@ VGPR register initial state is defined in
                 > 1)                              wavefront lane.
      ========== ========================== ====== ==============================
 
-The setting of registers is is done by GPU CP/ADC/SPI hardware as follows:
+The setting of registers is done by GPU CP/ADC/SPI hardware as follows:
 
 1. SGPRs before the Work-Group Ids are set by CP using the 16 User Data
    registers.

docs/ExceptionHandling.rst

@@ -365,7 +365,7 @@ abstract interface.
 
 When used in the native Windows C++ exception handling implementation, this
 intrinsic serves as a placeholder to delimit code before a catch handler is
-outlined.  When the handler is is outlined, this intrinsic will be replaced
+outlined.  When the handler is outlined, this intrinsic will be replaced
 by instructions that retrieve the exception object pointer from the frame
 allocation block.
 

docs/ProgrammersManual.rst

@@ -2984,7 +2984,7 @@ Conceptually, ``LLVMContext`` provides isolation.  Every LLVM entity
 in-memory IR belongs to an ``LLVMContext``.  Entities in different contexts
 *cannot* interact with each other: ``Module``\ s in different contexts cannot be
 linked together, ``Function``\ s cannot be added to ``Module``\ s in different
-contexts, etc.  What this means is that is is safe to compile on multiple
+contexts, etc.  What this means is that is safe to compile on multiple
 threads simultaneously, as long as no two threads operate on entities within the
 same context.
 

include/llvm/Analysis/LoopInfo.h

@@ -527,7 +527,7 @@ public:
   ///
   /// If this loop contains the same llvm.loop metadata on each branch to the
   /// header then the node is returned. If any latch instruction does not
-  /// contain llvm.loop or or if multiple latches contain different nodes then
+  /// contain llvm.loop or if multiple latches contain different nodes then
   /// 0 is returned.
   MDNode *getLoopID() const;
   /// Set the llvm.loop loop id metadata for this loop.

include/llvm/Analysis/ScalarEvolutionExpander.h

@@ -321,7 +321,7 @@ namespace llvm {
 
     /// Arrange for there to be a cast of V to Ty at IP, reusing an existing
     /// cast if a suitable one exists, moving an existing cast if a suitable one
-    /// exists but isn't in the right place, or or creating a new one.
+    /// exists but isn't in the right place, or creating a new one.
     Value *ReuseOrCreateCast(Value *V, Type *Ty,
                              Instruction::CastOps Op,
                              BasicBlock::iterator IP);

lib/CodeGen/LiveIntervals.cpp

@@ -785,7 +785,7 @@ MachineBasicBlock*
 LiveIntervals::intervalIsInOneMBB(const LiveInterval &LI) const {
   // A local live range must be fully contained inside the block, meaning it is
   // defined and killed at instructions, not at block boundaries. It is not
-  // live in or or out of any block.
+  // live in or out of any block.
   //
   // It is technically possible to have a PHI-defined live range identical to a
   // single block, but we are going to return false in that case.

lib/IR/ConstantFold.cpp

@@ -321,7 +321,7 @@ static Constant *ExtractConstantBytes(Constant *C, unsigned ByteStart,
     if (ByteStart == 0 && ByteSize*8 == SrcBitSize)
       return CE->getOperand(0);
 
-    // If extracting something completely in the input, if if the input is a
+    // If extracting something completely in the input, if the input is a
     // multiple of 8 bits, recurse.
     if ((SrcBitSize&7) == 0 && (ByteStart+ByteSize)*8 <= SrcBitSize)
       return ExtractConstantBytes(CE->getOperand(0), ByteStart, ByteSize);

lib/Object/COFFObjectFile.cpp

@@ -944,7 +944,7 @@ COFFObjectFile::getPE32PlusHeader(const pe32plus_header *&Res) const {
 std::error_code
 COFFObjectFile::getDataDirectory(uint32_t Index,
                                  const data_directory *&Res) const {
-  // Error if if there's no data directory or the index is out of range.
+  // Error if there's no data directory or the index is out of range.
   if (!DataDirectory) {
     Res = nullptr;
     return object_error::parse_failed;

lib/Transforms/Scalar/NewGVN.cpp

@@ -1705,7 +1705,7 @@ bool NewGVN::isCycleFree(const Instruction *I) const {
   if (ICS == ICS_Unknown) {
     SCCFinder.Start(I);
     auto &SCC = SCCFinder.getComponentFor(I);
-    // It's cycle free if it's size 1 or or the SCC is *only* phi nodes.
+    // It's cycle free if it's size 1 or the SCC is *only* phi nodes.
     if (SCC.size() == 1)
       InstCycleState.insert({I, ICS_CycleFree});
     else {

test/CodeGen/AArch64/bitfield-insert.ll

@@ -137,7 +137,7 @@ define void @test_32bit_complexmask(i32 *%existing, i32 *%new) {
   ret void
 }
 
-; Neither mask is is a contiguous set of 1s. BFI can't be used
+; Neither mask is a contiguous set of 1s. BFI can't be used
 define void @test_32bit_badmask(i32 *%existing, i32 *%new) {
 ; CHECK-LABEL: test_32bit_badmask:
 ; CHECK-NOT: bfi

test/Transforms/GVNHoist/infinite-loop-indirect.ll

@@ -2,7 +2,7 @@
 
 ; Checking gvn-hoist in case of indirect branches.
 
-; Check that the bitcast is is not hoisted because it is after an indirect call
+; Check that the bitcast is not hoisted because it is after an indirect call
 ; CHECK-LABEL: @foo
 ; CHECK-LABEL: l1.preheader:
 ; CHECK-NEXT: bitcast