[NFC] Shortened SIL [init] flag.

Instead of writing out [initalization] for some instructions, use [init]
everywhere.

Author: nate-chandler

docs/DifferentiableProgrammingImplementation.md

@@ -885,7 +885,7 @@ sil hidden [ossa] @$s4main7genericyxxlF : $@convention(thin) <T> (@in_guaranteed
 // %1                                             // users: %3, %2
 bb0(%0 : $*T, %1 : $*T):
   debug_value_addr %1 : $*T, let, name "x", argno 1 // id: %2
-  copy_addr %1 to [initialization] %0 : $*T       // id: %3
+  copy_addr %1 to [init] %0 : $*T       // id: %3
   %4 = tuple ()                                   // user: %5
   return %4 : $()                                 // id: %5
 } // end sil function '$s4main7genericyxxlF'

docs/SIL.rst

@@ -4169,7 +4169,7 @@ assign_by_wrapper
 
   sil-instruction ::= 'assign_by_wrapper' sil-operand 'to' mode? sil-operand ',' 'init' sil-operand ',' 'set' sil-operand
 
-  mode ::= '[initialization]' | '[assign]' | '[assign_wrapped_value]'
+  mode ::= '[init]' | '[assign]' | '[assign_wrapped_value]'
 
   assign_by_wrapper %0 : $S to %1 : $*T, init %2 : $F, set %3 : $G
   // $S can be a value or address type
@@ -4286,9 +4286,9 @@ copy_addr
 ::
 
   sil-instruction ::= 'copy_addr' '[take]'? sil-value
-                        'to' '[initialization]'? sil-operand
+                        'to' '[init]'? sil-operand
 
-  copy_addr [take] %0 to [initialization] %1 : $*T
+  copy_addr [take] %0 to [init] %1 : $*T
   // %0 and %1 must be of the same $*T address type
 
 Loads the value at address ``%0`` from memory and assigns a copy of it back into
@@ -4307,11 +4307,11 @@ is equivalent to::
 
 except that ``copy_addr`` may be used even if ``%0`` is of an address-only
 type. The ``copy_addr`` may be given one or both of the ``[take]`` or
-``[initialization]`` attributes:
+``[init]`` attributes:
 
 * ``[take]`` destroys the value at the source address in the course of the
   copy.
-* ``[initialization]`` indicates that the destination address is uninitialized.
+* ``[init]`` indicates that the destination address is uninitialized.
   Without the attribute, the destination address is treated as already
   initialized, and the existing value will be destroyed before the new value
   is stored.
@@ -4329,15 +4329,15 @@ operations::
     store %new to %1 : $*T
 
   // copy-initialization
-    copy_addr %0 to [initialization] %1 : $*T
+    copy_addr %0 to [init] %1 : $*T
   // is equivalent to:
     %new = load %0 : $*T
     strong_retain %new : $T
     // no load/release of %old!
     store %new to %1 : $*T
 
   // take-initialization
-    copy_addr [take] %0 to [initialization] %1 : $*T
+    copy_addr [take] %0 to [init] %1 : $*T
   // is equivalent to:
     %new = load %0 : $*T
     // no retain of %new!
@@ -4355,9 +4355,9 @@ explicit_copy_addr
 ::
 
   sil-instruction ::= 'explicit_copy_addr' '[take]'? sil-value
-                        'to' '[initialization]'? sil-operand
+                        'to' '[init]'? sil-operand
 
-  explicit_copy_addr [take] %0 to [initialization] %1 : $*T
+  explicit_copy_addr [take] %0 to [init] %1 : $*T
   // %0 and %1 must be of the same $*T address type
 
 This instruction is exactly the same as `copy_addr`_ except that it has special
@@ -4789,14 +4789,14 @@ store_weak
 
 ::
 
-  sil-instruction ::= 'store_weak' sil-value 'to' '[initialization]'? sil-operand
+  sil-instruction ::= 'store_weak' sil-value 'to' '[init]'? sil-operand
 
-  store_weak %0 to [initialization] %1 : $*@sil_weak Optional<T>
+  store_weak %0 to [init] %1 : $*@sil_weak Optional<T>
   // $T must be an optional wrapping a reference type
 
 Initializes or reassigns a weak reference.  The operand may be ``nil``.
 
-If ``[initialization]`` is given, the weak reference must currently either be
+If ``[init]`` is given, the weak reference must currently either be
 uninitialized or destroyed.  If it is not given, the weak reference must
 currently be initialized. After the evaluation:
 
@@ -6019,7 +6019,7 @@ an `inject_enum_addr`_ instruction::
   entry(%0 : $*AddressOnlyEnum, %1 : $*AddressOnlyType):
     // Store the data argument for the case.
     %2 = init_enum_data_addr %0 : $*AddressOnlyEnum, #AddressOnlyEnum.HasData!enumelt
-    copy_addr [take] %2 to [initialization] %1 : $*AddressOnlyType
+    copy_addr [take] %2 to [init] %1 : $*AddressOnlyType
     // Inject the tag.
     inject_enum_addr %0 : $*AddressOnlyEnum, #AddressOnlyEnum.HasData!enumelt
     return

docs/proposals/InoutCOWOptimization.rst

@@ -202,7 +202,7 @@ To work with opaque types, ``copy_addr`` must also be able to perform an
 an original value. This can be an additional attribute on the source, mutually
 exclusive with ``[take]``::
 
-  copy_addr [inout] %a to [initialization] %b
+  copy_addr [inout] %a to [init] %b
 
 This implies that value witness tables will need witnesses for
 inout-initialization and inout-reassignment.

lib/SIL/IR/SILPrinter.cpp

@@ -1706,7 +1706,7 @@ class SILPrinter : public SILInstructionVisitor<SILPrinter> {
     case AssignByWrapperInst::Unknown:
       break;
     case AssignByWrapperInst::Initialization:
-      *this << "[initialization] ";
+      *this << "[init] ";
       break;
     case AssignByWrapperInst::Assign:
       *this << "[assign] ";
@@ -1771,7 +1771,7 @@ class SILPrinter : public SILInstructionVisitor<SILPrinter> {
   void visitStore##Name##Inst(Store##Name##Inst *SI) { \
     *this << Ctx.getID(SI->getSrc()) << " to "; \
     if (SI->isInitializationOfDest()) \
-      *this << "[initialization] "; \
+      *this << "[init] "; \
     *this << getIDAndType(SI->getDest()); \
   }
 #include "swift/AST/ReferenceStorage.def"
@@ -1781,7 +1781,7 @@ class SILPrinter : public SILInstructionVisitor<SILPrinter> {
       *this << "[take] ";
     *this << Ctx.getID(CI->getSrc()) << " to ";
     if (CI->isInitializationOfDest())
-      *this << "[initialization] ";
+      *this << "[init] ";
     *this << getIDAndType(CI->getDest());
   }
 
@@ -1790,7 +1790,7 @@ class SILPrinter : public SILInstructionVisitor<SILPrinter> {
       *this << "[take] ";
     *this << Ctx.getID(CI->getSrc()) << " to ";
     if (CI->isInitializationOfDest())
-      *this << "[initialization] ";
+      *this << "[init] ";
     *this << getIDAndType(CI->getDest());
   }
 

lib/SIL/Parser/ParseSIL.cpp

@@ -2241,7 +2241,7 @@ static bool parseAssignByWrapperMode(AssignByWrapperInst::Mode &Result,
   // Then try to parse one of our other initialization kinds. We do not support
   // parsing unknown here so we use that as our fail value.
   auto Tmp = llvm::StringSwitch<AssignByWrapperInst::Mode>(Str)
-        .Case("initialization", AssignByWrapperInst::Initialization)
+        .Case("init", AssignByWrapperInst::Initialization)
         .Case("assign", AssignByWrapperInst::Assign)
         .Case("assign_wrapped_value", AssignByWrapperInst::AssignWrappedValue)
         .Default(AssignByWrapperInst::Unknown);
@@ -4403,7 +4403,7 @@ bool SILParser::parseSpecificSILInstruction(SILBuilder &B,
     if (parseValueName(from) ||
         parseSILIdentifier(toToken, toLoc, diag::expected_tok_in_sil_instr,
                            "to") ||
-        (isRefStorage && parseSILOptional(isInit, *this, "initialization")) ||
+        (isRefStorage && parseSILOptional(isInit, *this, "init")) ||
         parseTypedValueRef(addrVal, addrLoc, B) ||
         parseSILDebugLocation(InstLoc, B))
       return true;
@@ -5011,7 +5011,7 @@ bool SILParser::parseSpecificSILInstruction(SILBuilder &B,
       if (parseSILOptional(IsTake, *this, "take") || parseValueName(SrcLName) ||
           parseSILIdentifier(ToToken, ToLoc, diag::expected_tok_in_sil_instr,
                              "to") ||
-          parseSILOptional(IsInit, *this, "initialization") ||
+          parseSILOptional(IsInit, *this, "init") ||
           parseTypedValueRef(DestLVal, DestLoc, B) ||
           parseSILDebugLocation(InstLoc, B))
         return true;
@@ -5041,7 +5041,7 @@ bool SILParser::parseSpecificSILInstruction(SILBuilder &B,
       if (parseSILOptional(IsTake, *this, "take") || parseValueName(SrcLName) ||
           parseSILIdentifier(ToToken, ToLoc, diag::expected_tok_in_sil_instr,
                              "to") ||
-          parseSILOptional(IsInit, *this, "initialization") ||
+          parseSILOptional(IsInit, *this, "init") ||
           parseTypedValueRef(DestLVal, DestLoc, B) ||
           parseSILDebugLocation(InstLoc, B))
         return true;

lib/SILOptimizer/Differentiation/PullbackCloner.cpp

@@ -2289,7 +2289,7 @@ void PullbackCloner::Implementation::accumulateAdjointForOptional(
     //                                 #Optional.some!enumelt
     auto *enumAddr = builder.createInitEnumDataAddr(
         pbLoc, optArgBuf, someEltDecl, wrappedTanType.getAddressType());
-    // copy_addr %wrappedAdjoint to [initialization] %enumAddr
+    // copy_addr %wrappedAdjoint to [init] %enumAddr
     builder.createCopyAddr(pbLoc, wrappedAdjoint, enumAddr, IsNotTake,
                            IsInitialization);
     // inject_enum_addr %optArgBuf : $*Optional<T.TangentVector>,

lib/SILOptimizer/FunctionSignatureTransforms/ExistentialTransform.cpp

@@ -198,7 +198,7 @@ void ExistentialSpecializerCloner::cloneArguments(
       /// bb0(%0 : $*T):
       /// %3 = alloc_stack $P
       /// %4 = init_existential_addr %3 : $*P, $T
-      /// copy_addr [take] %0 to [initialization] %4 : $*T
+      /// copy_addr [take] %0 to [init] %4 : $*T
       /// %7 = open_existential_addr immutable_access %3 : $*P to
       /// $*@opened P
       auto *ASI =

lib/SILOptimizer/Mandatory/AddressLowering.cpp

@@ -1581,9 +1581,9 @@ namespace {
 //     br bb3(val0, val1)
 //   bb2:
 //     temp = alloc_stack
-//     copy_addr [take] addr0 to [initialization] temp
-//     copy_addr [take] addr1 to [initialization] addr0
-//     copy_addr [take] temp to [initialization] addr1
+//     copy_addr [take] addr0 to [init] temp
+//     copy_addr [take] addr1 to [init] addr0
+//     copy_addr [take] temp to [init] addr1
 //     dealloc_stack temp
 //     br bb3(val1, val1)
 //   bb3(phi0, phi1):

lib/SILOptimizer/Transforms/CopyForwarding.cpp

@@ -26,7 +26,7 @@
 // Useless copies of address-only types look like this:
 //
 // %copy = alloc_stack $T
-// copy_addr %arg to [initialization] %copy : $*T
+// copy_addr %arg to [init] %copy : $*T
 // %ret = apply %callee<T>(%copy) : $@convention(thin) <τ_0_0> (@in τ_0_0) -> ()
 // dealloc_stack %copy : $*T
 // destroy_addr %arg : $*T
@@ -927,7 +927,7 @@ static DeallocStackInst *getSingleDealloc(AllocStackInst *ASI) {
 /// %copy = alloc_stack $T
 /// ...
 /// CurrentBlock:
-/// copy_addr %arg to [initialization] %copy : $*T
+/// copy_addr %arg to [init] %copy : $*T
 /// ...
 /// %ret = apply %callee<T>(%copy) : $@convention(thin) <τ_0_0> (@in τ_0_0) -> ()
 /// \endcode
@@ -1252,7 +1252,7 @@ void CopyForwarding::forwardCopiesOf(SILValue Def, SILFunction *F) {
 ///   %2 = alloc_stack $T
 /// ... // arbitrary control flow, but no other uses of %0
 /// bbN:
-///   copy_addr [take] %2 to [initialization] %0 : $*T
+///   copy_addr [take] %2 to [init] %0 : $*T
 ///   ... // no writes
 ///   return
 static bool canNRVO(CopyAddrInst *CopyInst) {
@@ -1264,7 +1264,7 @@ static bool canNRVO(CopyAddrInst *CopyInst) {
   //   bb0(%in : $*T, %out : $T):
   //     %local = alloc_stack $T
   //     store %in to %local : $*T
-  //     copy_addr %local to [initialization] %out : $*T
+  //     copy_addr %local to [init] %out : $*T
   if (!CopyInst->isTakeOfSrc())
     return false;
 
@@ -1350,7 +1350,7 @@ class CopyForwardingPass : public SILFunctionTransform
     //   %ref = load %objaddr : $*AnyObject
     //   %alloc2 = alloc_stack $ObjWrapper
     //   # The in-memory reference is destroyed before retaining the loaded ref.
-    //   copy_addr [take] %alloc1 to [initialization] %alloc2 : $*ObjWrapper
+    //   copy_addr [take] %alloc1 to [init] %alloc2 : $*ObjWrapper
     //   retain_value %ref : $AnyObject
     //   destroy_addr %alloc2 : $*ObjWrapper
     if (!getFunction()->hasOwnership())

lib/SILOptimizer/Transforms/SILLowerAggregateInstrs.cpp

@@ -87,7 +87,7 @@ static bool shouldExpandShim(SILFunction *fn, SILType type) {
 ///     strong_release %old : $T
 ///     store %new to %1 : $*T
 ///
-/// copy_addr %0 to [initialization] %1 : $*T
+/// copy_addr %0 to [init] %1 : $*T
 /// ->
 ///     %new = load [copy] %0 : $*T
 ///     store %new to [init] %1 : $*T
@@ -97,7 +97,7 @@ static bool shouldExpandShim(SILFunction *fn, SILType type) {
 ///     // no load/release of %old!
 ///     store %new to %1 : $*T
 ///
-/// copy_addr [take] %0 to [initialization] %1 : $*T
+/// copy_addr [take] %0 to [init] %1 : $*T
 /// ->
 ///     %new = load [take] %0 : $*T
 ///     store %new to [init] %1 : $*T