search for: createbitcast

Hello all, According to *clang/lib/CodeGen/CodeGenFunction.cpp*, a LLVM annotation intrinsic call has 4 arguments: - llvm::Value *AnnotatedVal, - Builder.CreateBitCast(CGM.EmitAnnotationString(AnnotationStr), Int8PtrTy), - Builder.CreateBitCast(CGM.EmitAnnotationUnit(Location), Int8PtrTy), - CGM.EmitAnnotationLineNo(Location) However, this is what an annotation intrinsic *char __attribute__((annotate("DIFF"))) diff* looks like in the IR: @.str = priva...

...t;__llvm_pgo_name"); MangledName = llvm::ConstantExpr::getBitCast(MangledName, Int8PtrTy); - PGOBuilder.CreateCall3(EmitFunc, MangledName, + PGOBuilder.CreateCall4(EmitFunc, MangledName, PGOBuilder.getInt32(NumRegionCounters), - PGOBuilder.CreateBitCast(RegionCounters, Int64PtrTy)); + PGOBuilder.CreateBitCast(RegionCounters, Int64PtrTy), + PGOBuilder.CreateBitCast(RegionPCs, Int64PtrTy)); } llvm::Function *CodeGenPGO::emitInitialization(CodeGenModule &CGM) { @@ -769,6 +771,13 @@...

...Type *IntEltTy = IntegerType::get(Context, EltBitWidth); > + Type *IntVecTy = VectorType::get(IntEltTy, VecTy->getNumElements()); > + APInt SignBit = APInt::getSignBit(EltBitWidth); > + Constant *SignMask = ConstantInt::get(IntVecTy, SignBit); > + Value *IntLHS = Builder.CreateBitCast(Ops[0], IntVecTy); > + Value *IntRHS = Builder.CreateBitCast(Ops[1], IntVecTy); > + Value *Sign = Builder.CreateAnd(IntRHS, SignMask); > + Value *Abs = Builder.CreateAnd(IntLHS, ConstantExpr::getNot(SignMask)); > + Value *IntRes = Builder.CreateOr(Abs, Sign); > + Resul...

...ransform this parameter value. if (AttrBuilder(CallerPAL.getParamAttributes(i + 1), i + 1). @@ -1551,7 +1551,7 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) { if ((*AI)->getType() == ParamTy) { Args.push_back(*AI); } else { - Args.push_back(Builder->CreateBitCast(*AI, ParamTy)); + Args.push_back(Builder->CreateBitOrPointerCast(*AI, ParamTy)); } // Add any parameter attributes. Running opt -instcombine -inline -instcombine with this patch results in: define i32 @g(i32* %a) { entry: %0 = ptrtoint i32* %a to i64 %call = tail call i32 @f...

...rns an > llvm::Instruction (that refers to the definition of the operand). What I am > trying to find out is how to get the value of the operand. When you refer to > bitcasting to i8*, do you mean casting the return value from getOperand() > itself? > Ashay I mean calling IRBuilder::CreateBitCast with the return value from getOperand(). -Eli > On Wed, Mar 16, 2011 at 11:03 PM, Eli Friedman <eli.friedman at gmail.com> > wrote: >> >> On Wed, Mar 16, 2011 at 6:00 PM, Ashay Rane <ashay.rane at asu.edu> wrote: >> > Hello, >> > I was facing some d...

I've built chromium with " -fprofile-instr-generate -fsanitize=address" -- the performance looks good! The file format from r198638 is indeed rudimentary. Do you already know how the real output format will look like? Just to summarize what I think is important: - minimal size on disk, minimal amount of files - minimal i/o while writing to disk, no lockf or some such -

...Slot->replaceUsesOfWith(Arg, Arg2); errs() << "Slot(replaced): " << *Slot << "\n"; } else { Slot = cast<Instruction>(Builder.CreateGEP(Arg2, {Builder.getInt64(1)}, "slot")); } * Value *TypedSlot = Builder.CreateBitCast(Slot, PointerType::get(Builder.getInt64Ty(), 1), "slot_typed"); Value *Load = Builder.CreateLoad(TypedSlot, "Val"); Builder.CreateRet(Load); if (verifyModule(*m) == 1) { errs() << "module has an error: "; verifyModule(*m, &errs())...

...ers to the definition of the operand). What I > am > > trying to find out is how to get the value of the operand. When you refer > to > > bitcasting to i8*, do you mean casting the return value from getOperand() > > itself? > > Ashay > > I mean calling IRBuilder::CreateBitCast with the return value from > getOperand(). > > -Eli > > > On Wed, Mar 16, 2011 at 11:03 PM, Eli Friedman <eli.friedman at gmail.com> > > wrote: > >> > >> On Wed, Mar 16, 2011 at 6:00 PM, Ashay Rane <ashay.rane at asu.edu> wrote: > >> &g...

Hi Eli, Thanks for the reply. The problem is that getOperand() returns an llvm::Instruction (that refers to the definition of the operand). What I am trying to find out is how to get the value of the operand. When you refer to bitcasting to i8*, do you mean casting the return value from getOperand() itself? Ashay On Wed, Mar 16, 2011 at 11:03 PM, Eli Friedman <eli.friedman at

...4 0, i64 0 %1 = load i32, i32* %arrayidx, align 4 ret i32 %1 } ===================================================== if (AllocaInst *alloca_inst = dyn_cast<AllocaInst>(&I)) { . . . Value* var_addr = builder.CreateBitCast(alloca_inst, Type::getInt8PtrTy(Ctx)); . . . } ===================================================== I am receiving the following error: Instruction does not dominate all uses! %var = alloca [3 x i32], align 4 %0 = bit...

...gt; am >> > trying to find out is how to get the value of the operand. When you >> > refer to >> > bitcasting to i8*, do you mean casting the return value from >> > getOperand() >> > itself? >> > Ashay >> >> I mean calling IRBuilder::CreateBitCast with the return value from >> getOperand(). >> >> -Eli >> >> > On Wed, Mar 16, 2011 at 11:03 PM, Eli Friedman <eli.friedman at gmail.com> >> > wrote: >> >> >> >> On Wed, Mar 16, 2011 at 6:00 PM, Ashay Rane <ashay.rane at asu...

I have a simple C++ class that looks like this: struct Foo { Thing *first; Blob *second; unsigned long third; }; Then I have a derived C++ class that look like this: struct Bar : Foo { long long fourth; } I generate JIT code to access 'fourth' from a Foo * as follows: BarPtr = CreateBitCast(FooPtr, BarPtrTy); FourthPtr = CreateConstGEP2_32(BarPtr, 0, 3); FourthValue = CreateLoad(FourthPtr); ConstantValue = ConstantInt::get(FourthValue->getType(), 0x2A4); ComparisonValue = CreateICmpEQ(FourthValue, ConstantValue); This appears to work on Linux and MacOSX with LLVM 2.6 and LLVM...

> On May 6, 2020, at 21:53, Krzysztof Parzyszek <kparzysz at quicinc.com> wrote: > > You can > 1. extract individual elements of {i8*, i64}, > 2. bitcast the first to some_struct*, > 3. insert them into a new struct of type {some_struct*, i64}. Thanks for the help. I’m thinking the same way. Now I’m stuck with how to create a struct; I know how to create a

...t;Value*> &ctor_args, > Function *dtor ) { > > // Allocate object's storage and insert 'this' ptr into ctor args. > AllocaInst *const obj_ptr = createEntryBlockAlloca( fn, obj_name, obj_type ); > Value *const void_obj_ptr = builder.CreateBitCast( obj_ptr, void_ptr_type ); > ctor_args.insert( ctor_args.begin(), void_obj_ptr ); > > // Call object's constructor. > BasicBlock *const normal_blk = BasicBlock::Create( ctx, "normal", fn ); > BasicBlock *const unwind_blk = BasicBlock::Create( ctx, "unwin...

On 28 April 2017 at 14:32, Jonathan Roelofs via llvm-dev <llvm-dev at lists.llvm.org> wrote: > You need a load instruction since your function takes an i32, not an > i32*.... A global's value in llvm is its address, not the numeric data it > contains. I suspect he actually wants to make his function take an "i8*" and bitcast his pointer to that type before calling it.

On Mar 23, 2012, at 4:29 PM, Paul J. Lucas wrote: > On Mar 23, 2012, at 3:25 PM, Bill Wendling wrote: > >> Let's take your example. You will have code that looks like this: >> >> extern "C" void thunk_item_M_delete( void *v_that ) { >> item *that = 0; >> try { >> that = static_cast<item*>( v_that ); >>

...+ return CreateCast(Instruction::PtrToInt, V, DestTy, Name); > + } > + Value *CreateIntToPtr(Value *V, const Type *DestTy, > + const char *Name = "") { > + return CreateCast(Instruction::IntToPtr, V, DestTy, Name); > + } > + Value *CreateBitCast(Value *V, const Type *DestTy, > + const char *Name = "") { > + return CreateCast(Instruction::BitCast, V, DestTy, Name); > + } > + > + Value *CreateCast(Instruction::CastOps Op, Value *V, const Type > *DestTy, > +...

Devang Patel wrote: > On Dec 15, 2007, at 12:15 PM, Richard Pennington wrote: > >> I got the current version of LLVM via svn yesterday and modified my >> code to >> use the LLVMFoldingBuilder. Very nice! >> >> My question is this: I noticed that the folding builder doesn't fold >> some >> operations, e.g. casts. Is there some reason why? If

Philip, I post here because I think AlwaysInliner should inline it. I want to detect the indirect calls for Inliner, and I want to hear inputs. let me define indirect call first in my idea. In one single expression, one function may be subject to bitcast more than one time. we can detect this situation and treat it as a regular call of last function, is that okay? thanks, --lx On Mon, Jan 5,

Hello, I have come across an unusual behavior where instruction domination rule is violated "Instruction does not dominate all its uses." It concerns with StackColoring pass present at llvm/lib/CodeGen/StackColoring.cpp. I am reaching out to the LLVM community to help me understand the cause of this issue and the working of the pass. The IR produced at the end of the pass seems to be