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bpftrace/bpftrace-0.13.1-Fix-LLVM-13-warnings.patch

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From fed7014be999f6437ebfd8a6465a76f459be0e1b Mon Sep 17 00:00:00 2001
From: Viktor Malik <viktor.malik@gmail.com>
Date: Mon, 10 Jan 2022 16:41:05 +0100
Subject: [PATCH 6/6] Fix LLVM 13 warnings
Since LLVM 13, CreateGEP and CreateLoad require explicit types.
---
src/ast/codegen_llvm.cpp | 265 ++++++++++++++++++++++++---------------
src/ast/irbuilderbpf.cpp | 56 +++++----
2 files changed, 200 insertions(+), 121 deletions(-)
diff --git a/src/ast/codegen_llvm.cpp b/src/ast/codegen_llvm.cpp
index d30327a2..0bd23276 100644
--- a/src/ast/codegen_llvm.cpp
+++ b/src/ast/codegen_llvm.cpp
@@ -224,9 +224,10 @@ void CodegenLLVM::visit(Builtin &builtin)
// LLVM optimization is possible to transform `(uint64*)ctx` into
// `(uint8*)ctx`, but sometimes this causes invalid context access.
// Mark every context acess to supporess any LLVM optimization.
- expr_ = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset)),
- builtin.ident);
+ expr_ = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(offset)),
+ builtin.ident);
// LLVM 7.0 <= does not have CreateLoad(*Ty, *Ptr, isVolatile, Name),
// so call setVolatile() manually
dyn_cast<LoadInst>(expr_)->setVolatile(true);
@@ -249,16 +250,17 @@ void CodegenLLVM::visit(Builtin &builtin)
int arg_num = atoi(builtin.ident.substr(4).c_str());
Value *ctx = b_.CreatePointerCast(ctx_, b_.getInt64Ty()->getPointerTo());
- Value *sp = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(sp_offset)),
- "reg_sp");
+ Value *sp = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(sp_offset)),
+ "reg_sp");
dyn_cast<LoadInst>(sp)->setVolatile(true);
AllocaInst *dst = b_.CreateAllocaBPF(builtin.type, builtin.ident);
Value *src = b_.CreateAdd(sp,
b_.getInt64((arg_num + arch::arg_stack_offset()) *
sizeof(uintptr_t)));
b_.CreateProbeRead(ctx_, dst, 8, src, builtin.type.GetAS(), builtin.loc);
- expr_ = b_.CreateLoad(dst);
+ expr_ = b_.CreateLoad(b_.GetType(builtin.type), dst);
b_.CreateLifetimeEnd(dst);
}
else if (builtin.ident == "probe")
@@ -526,8 +528,12 @@ void CodegenLLVM::visit(Call &call)
b_.CREATE_MEMSET(buf, b_.getInt8(0), bpftrace_.strlen_, 1);
auto arg0 = call.vargs->front();
auto scoped_del = accept(call.vargs->front());
- b_.CreateProbeReadStr(
- ctx_, buf, b_.CreateLoad(strlen), expr_, arg0->type.GetAS(), call.loc);
+ b_.CreateProbeReadStr(ctx_,
+ buf,
+ b_.CreateLoad(b_.getInt64Ty(), strlen),
+ expr_,
+ arg0->type.GetAS(),
+ call.loc);
b_.CreateLifetimeEnd(strlen);
expr_ = buf;
@@ -569,12 +575,14 @@ void CodegenLLVM::visit(Call &call)
false);
AllocaInst *buf = b_.CreateAllocaBPF(buf_struct, "buffer");
- Value *buf_len_offset = b_.CreateGEP(buf,
+ Value *buf_len_offset = b_.CreateGEP(buf_struct,
+ buf,
{ b_.getInt32(0), b_.getInt32(0) });
length = b_.CreateIntCast(length, buf_struct->getElementType(0), false);
b_.CreateStore(length, buf_len_offset);
- Value *buf_data_offset = b_.CreateGEP(buf,
+ Value *buf_data_offset = b_.CreateGEP(buf_struct,
+ buf,
{ b_.getInt32(0), b_.getInt32(1) });
b_.CREATE_MEMSET(buf_data_offset,
b_.GetIntSameSize(0, elements.at(0)),
@@ -664,14 +672,14 @@ void CodegenLLVM::visit(Call &call)
b_.SetInsertPoint(notzero);
b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::join)), perfdata);
b_.CreateStore(b_.getInt64(join_id_),
- b_.CreateGEP(perfdata, b_.getInt64(8)));
+ b_.CreateGEP(b_.getInt8Ty(), perfdata, b_.getInt64(8)));
join_id_++;
AllocaInst *arr = b_.CreateAllocaBPF(b_.getInt64Ty(), call.func + "_r0");
b_.CreateProbeRead(ctx_, arr, 8, expr_, addrspace, call.loc);
b_.CreateProbeReadStr(ctx_,
b_.CreateAdd(perfdata, b_.getInt64(8 + 8)),
bpftrace_.join_argsize_,
- b_.CreateLoad(arr),
+ b_.CreateLoad(b_.getInt64Ty(), arr),
addrspace,
call.loc);
@@ -679,14 +687,18 @@ void CodegenLLVM::visit(Call &call)
{
// argi
b_.CreateStore(b_.CreateAdd(expr_, b_.getInt64(8 * i)), first);
- b_.CreateProbeRead(
- ctx_, second, 8, b_.CreateLoad(first), addrspace, call.loc);
+ b_.CreateProbeRead(ctx_,
+ second,
+ 8,
+ b_.CreateLoad(b_.getInt64Ty(), first),
+ addrspace,
+ call.loc);
b_.CreateProbeReadStr(
ctx_,
b_.CreateAdd(perfdata,
b_.getInt64(8 + 8 + i * bpftrace_.join_argsize_)),
bpftrace_.join_argsize_,
- b_.CreateLoad(second),
+ b_.CreateLoad(b_.getInt64Ty(), second),
addrspace,
call.loc);
}
@@ -729,7 +741,9 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(inet_struct, "inet");
- Value *af_offset = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) });
+ Value *af_offset = b_.CreateGEP(inet_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(0) });
Value *af_type;
auto inet = call.vargs->at(0);
@@ -752,7 +766,9 @@ void CodegenLLVM::visit(Call &call)
}
b_.CreateStore(af_type, af_offset);
- Value *inet_offset = b_.CreateGEP(buf, {b_.getInt32(0), b_.getInt32(1)});
+ Value *inet_offset = b_.CreateGEP(inet_struct,
+ buf,
+ { b_.getInt32(0), b_.getInt32(1) });
b_.CREATE_MEMSET(inet_offset, b_.getInt8(0), 16, 1);
auto scoped_del = accept(inet);
@@ -785,9 +801,10 @@ void CodegenLLVM::visit(Call &call)
}
Value *ctx = b_.CreatePointerCast(ctx_, b_.getInt64Ty()->getPointerTo());
- expr_ = b_.CreateLoad(b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset)),
- call.func + "_" + reg_name);
+ expr_ = b_.CreateLoad(
+ b_.getInt64Ty(),
+ b_.CreateGEP(b_.getInt64Ty(), ctx, b_.getInt64(offset)),
+ call.func + "_" + reg_name);
dyn_cast<LoadInst>(expr_)->setVolatile(true);
}
else if (call.func == "printf")
@@ -812,8 +829,10 @@ void CodegenLLVM::visit(Call &call)
auto scoped_del = accept(&arg);
// and store it to data area
- Value *offset = b_.CreateGEP(
- data, { b_.getInt64(0), b_.getInt64((i - 1) * ptr_size) });
+ Value *offset = b_.CreateGEP(b_.GetType(data_type),
+ data,
+ { b_.getInt64(0),
+ b_.getInt64((i - 1) * ptr_size) });
b_.CreateStore(expr_, offset);
// keep the expression alive, so it's still there
@@ -901,7 +920,9 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(event_struct,
call.func + "_" + map.ident);
- auto aa_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) });
+ auto aa_ptr = b_.CreateGEP(event_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(0) });
if (call.func == "clear")
b_.CreateStore(b_.GetIntSameSize(asyncactionint(AsyncAction::clear),
elements.at(0)),
@@ -912,7 +933,9 @@ void CodegenLLVM::visit(Call &call)
aa_ptr);
auto id = bpftrace_.maps[map.ident].value()->id;
- auto *ident_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) });
+ auto *ident_ptr = b_.CreateGEP(event_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(1) });
b_.CreateStore(b_.GetIntSameSize(id, elements.at(1)), ident_ptr);
b_.CreatePerfEventOutput(ctx_, buf, getStructSize(event_struct));
@@ -928,12 +951,13 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(time_struct, call.func + "_t");
- b_.CreateStore(b_.GetIntSameSize(asyncactionint(AsyncAction::time),
- elements.at(0)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(asyncactionint(AsyncAction::time), elements.at(0)),
+ b_.CreateGEP(time_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
- b_.CreateStore(b_.GetIntSameSize(time_id_, elements.at(1)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(time_id_, elements.at(1)),
+ b_.CreateGEP(time_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
time_id_++;
b_.CreatePerfEventOutput(ctx_, buf, getStructSize(time_struct));
@@ -948,13 +972,15 @@ void CodegenLLVM::visit(Call &call)
true);
AllocaInst *buf = b_.CreateAllocaBPF(strftime_struct, call.func + "_args");
- b_.CreateStore(b_.GetIntSameSize(strftime_id_, elements.at(0)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.GetIntSameSize(strftime_id_, elements.at(0)),
+ b_.CreateGEP(strftime_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
strftime_id_++;
Expression *arg = call.vargs->at(1);
auto scoped_del = accept(arg);
- b_.CreateStore(expr_,
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ expr_,
+ b_.CreateGEP(strftime_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
expr_ = buf;
}
else if (call.func == "kstack" || call.func == "ustack")
@@ -1068,11 +1094,12 @@ void CodegenLLVM::visit(Call &call)
AllocaInst *buf = b_.CreateAllocaBPF(unwatch_struct, "unwatch");
size_t struct_size = datalayout().getTypeAllocSize(unwatch_struct);
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::watchpoint_detach)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::watchpoint_detach)),
+ b_.CreateGEP(unwatch_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
b_.CreateStore(
b_.CreateIntCast(expr_, b_.getInt64Ty(), false /* unsigned */),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateGEP(unwatch_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
b_.CreatePerfEventOutput(ctx_, buf, struct_size);
b_.CreateLifetimeEnd(buf);
expr_ = nullptr;
@@ -1102,7 +1129,8 @@ void CodegenLLVM::visit(Variable &var)
}
else
{
- expr_ = b_.CreateLoad(variables_[var.ident]);
+ auto *var_alloca = variables_[var.ident];
+ expr_ = b_.CreateLoad(var_alloca->getType()->getElementType(), var_alloca);
}
}
@@ -1379,13 +1407,15 @@ void CodegenLLVM::visit(Unop &unop)
if (unop.is_post_op)
expr_ = oldval;
else
- expr_ = b_.CreateLoad(newval);
+ expr_ = b_.CreateLoad(b_.GetType(map.type), newval);
b_.CreateLifetimeEnd(newval);
}
else if (unop.expr->is_variable)
{
Variable &var = static_cast<Variable&>(*unop.expr);
- Value *oldval = b_.CreateLoad(variables_[var.ident]);
+ Value *oldval = b_.CreateLoad(
+ variables_[var.ident]->getType()->getElementType(),
+ variables_[var.ident]);
Value *newval;
if (is_increment)
newval = b_.CreateAdd(oldval, b_.getInt64(1));
@@ -1411,9 +1441,10 @@ void CodegenLLVM::visit(Unop &unop)
: type.GetSize();
auto as = type.GetAS();
- AllocaInst *dst = b_.CreateAllocaBPF(SizedType(type.type, size), "deref");
+ auto dst_type = SizedType(type.type, size);
+ AllocaInst *dst = b_.CreateAllocaBPF(dst_type, "deref");
b_.CreateProbeRead(ctx_, dst, size, expr_, as, unop.loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(dst_type), dst),
b_.getInt64Ty(),
type.IsSigned());
b_.CreateLifetimeEnd(dst);
@@ -1434,7 +1465,7 @@ void CodegenLLVM::visit(Unop &unop)
int size = unop.type.IsIntegerTy() ? et->GetIntBitWidth() / 8 : 8;
AllocaInst *dst = b_.CreateAllocaBPF(*et, "deref");
b_.CreateProbeRead(ctx_, dst, size, expr_, type.GetAS(), unop.loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(*et), dst),
b_.getInt64Ty(),
unop.type.IsSigned());
b_.CreateLifetimeEnd(dst);
@@ -1492,7 +1523,7 @@ void CodegenLLVM::visit(Ternary &ternary)
b_.CreateBr(done);
b_.SetInsertPoint(done);
- expr_ = b_.CreateLoad(result);
+ expr_ = b_.CreateLoad(b_.GetType(ternary.type), result);
}
else if (ternary.type.IsStringTy())
{
@@ -1549,7 +1580,8 @@ void CodegenLLVM::visit(FieldAccess &acc)
}
else if (type.IsTupleTy())
{
- Value *src = b_.CreateGEP(expr_,
+ Value *src = b_.CreateGEP(b_.GetType(type),
+ expr_,
{ b_.getInt32(0), b_.getInt32(acc.index) });
SizedType &elem_type = type.GetFields()[acc.index].type;
@@ -1596,10 +1628,12 @@ void CodegenLLVM::visit(FieldAccess &acc)
if (field.is_bitfield)
{
Value *raw;
+ auto field_type = b_.GetType(field.type);
if (type.IsCtxAccess())
- raw = b_.CreateLoad(
- b_.CreateIntToPtr(src, b_.GetType(field.type)->getPointerTo()),
- true);
+ raw = b_.CreateLoad(field_type,
+ b_.CreateIntToPtr(src,
+ field_type->getPointerTo()),
+ true);
else
{
AllocaInst *dst = b_.CreateAllocaBPF(field.type,
@@ -1610,7 +1644,7 @@ void CodegenLLVM::visit(FieldAccess &acc)
b_.CREATE_MEMSET(dst, b_.getInt8(0), field.type.GetSize(), 1);
b_.CreateProbeRead(
ctx_, dst, field.bitfield.read_bytes, src, type.GetAS(), acc.loc);
- raw = b_.CreateLoad(dst);
+ raw = b_.CreateLoad(field_type, dst);
b_.CreateLifetimeEnd(dst);
}
size_t rshiftbits;
@@ -1638,7 +1672,8 @@ void CodegenLLVM::visit(FieldAccess &acc)
// offset which we add to the start of the tracepoint struct.
expr_ = b_.CreateLoad(
b_.getInt32Ty(),
- b_.CreateGEP(b_.CreatePointerCast(ctx_,
+ b_.CreateGEP(b_.getInt32Ty(),
+ b_.CreatePointerCast(ctx_,
b_.getInt32Ty()->getPointerTo()),
b_.getInt64(field.offset / 4)));
expr_ = b_.CreateIntCast(expr_, b_.getInt64Ty(), false);
@@ -1757,7 +1792,9 @@ void CodegenLLVM::visit(Tuple &tuple)
Expression *elem = tuple.elems->at(i);
auto scoped_del = accept(elem);
- Value *dst = b_.CreateGEP(buf, { b_.getInt32(0), b_.getInt32(i) });
+ Value *dst = b_.CreateGEP(tuple_ty,
+ buf,
+ { b_.getInt32(0), b_.getInt32(i) });
if (onStack(elem->type))
b_.CREATE_MEMCPY(dst, expr_, elem->type.GetSize(), 1);
@@ -2357,6 +2394,7 @@ std::tuple<Value *, CodegenLLVM::ScopedExprDeleter> CodegenLLVM::getMapKey(
size += expr->type.GetSize();
}
key = b_.CreateAllocaBPF(size, map.ident + "_key");
+ auto *key_type = ArrayType::get(b_.getInt8Ty(), size);
int offset = 0;
// Construct a map key in the stack
@@ -2364,7 +2402,8 @@ std::tuple<Value *, CodegenLLVM::ScopedExprDeleter> CodegenLLVM::getMapKey(
{
auto scoped_del = accept(expr);
Value *offset_val = b_.CreateGEP(
- key, { b_.getInt64(0), b_.getInt64(offset) });
+ key_type, key,
+ { b_.getInt64(0), b_.getInt64(offset) });
if (onStack(expr->type))
b_.CREATE_MEMCPY(offset_val, expr_, expr->type.GetSize(), 1);
@@ -2417,18 +2456,19 @@ AllocaInst *CodegenLLVM::getHistMapKey(Map &map, Value *log2)
size += expr->type.GetSize();
}
key = b_.CreateAllocaBPF(size, map.ident + "_key");
+ auto *key_type = ArrayType::get(b_.getInt8Ty(), size);
int offset = 0;
for (Expression *expr : *map.vargs) {
auto scoped_del = accept(expr);
- Value *offset_val = b_.CreateGEP(key, {b_.getInt64(0), b_.getInt64(offset)});
+ Value *offset_val = b_.CreateGEP(key_type, key, {b_.getInt64(0), b_.getInt64(offset)});
if (shouldBeOnStackAlready(expr->type))
b_.CREATE_MEMCPY(offset_val, expr_, expr->type.GetSize(), 1);
else
b_.CreateStore(expr_, offset_val);
offset += expr->type.GetSize();
}
- Value *offset_val = b_.CreateGEP(key, {b_.getInt64(0), b_.getInt64(offset)});
+ Value *offset_val = b_.CreateGEP(key_type, key, {b_.getInt64(0), b_.getInt64(offset)});
b_.CreateStore(log2, offset_val);
}
else
@@ -2475,7 +2515,7 @@ Value *CodegenLLVM::createLogicalAnd(Binop &binop)
b_.CreateBr(merge_block);
b_.SetInsertPoint(merge_block);
- return b_.CreateLoad(result);
+ return b_.CreateLoad(b_.getInt64Ty(), result);
}
Value *CodegenLLVM::createLogicalOr(Binop &binop)
@@ -2514,7 +2554,7 @@ Value *CodegenLLVM::createLogicalOr(Binop &binop)
b_.CreateBr(merge_block);
b_.SetInsertPoint(merge_block);
- return b_.CreateLoad(result);
+ return b_.CreateLoad(b_.getInt64Ty(), result);
}
Function *CodegenLLVM::createLog2Function()
@@ -2558,34 +2598,37 @@ Function *CodegenLLVM::createLog2Function()
// test for less than zero
BasicBlock *is_less_than_zero = BasicBlock::Create(module_->getContext(), "hist.is_less_than_zero", log2_func);
BasicBlock *is_not_less_than_zero = BasicBlock::Create(module_->getContext(), "hist.is_not_less_than_zero", log2_func);
- b_.CreateCondBr(b_.CreateICmpSLT(b_.CreateLoad(n_alloc), b_.getInt64(0)),
+ b_.CreateCondBr(b_.CreateICmpSLT(b_.CreateLoad(b_.getInt64Ty(), n_alloc),
+ b_.getInt64(0)),
is_less_than_zero,
is_not_less_than_zero);
b_.SetInsertPoint(is_less_than_zero);
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.SetInsertPoint(is_not_less_than_zero);
// test for equal to zero
BasicBlock *is_zero = BasicBlock::Create(module_->getContext(), "hist.is_zero", log2_func);
BasicBlock *is_not_zero = BasicBlock::Create(module_->getContext(), "hist.is_not_zero", log2_func);
- b_.CreateCondBr(b_.CreateICmpEQ(b_.CreateLoad(n_alloc), b_.getInt64(0)),
+ b_.CreateCondBr(b_.CreateICmpEQ(b_.CreateLoad(b_.getInt64Ty(), n_alloc),
+ b_.getInt64(0)),
is_zero,
is_not_zero);
b_.SetInsertPoint(is_zero);
b_.CreateStore(b_.getInt64(1), result);
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.SetInsertPoint(is_not_zero);
// power-of-2 index, offset by +2
b_.CreateStore(b_.getInt64(2), result);
for (int i = 4; i >= 0; i--)
{
- Value *n = b_.CreateLoad(n_alloc);
+ Value *n = b_.CreateLoad(b_.getInt64Ty(), n_alloc);
Value *shift = b_.CreateShl(b_.CreateIntCast(b_.CreateICmpSGE(b_.CreateIntCast(n, b_.getInt64Ty(), false), b_.getInt64(1 << (1<<i))), b_.getInt64Ty(), false), i);
b_.CreateStore(b_.CreateLShr(n, shift), n_alloc);
- b_.CreateStore(b_.CreateAdd(b_.CreateLoad(result), shift), result);
+ b_.CreateStore(b_.CreateAdd(b_.CreateLoad(b_.getInt64Ty(), result), shift),
+ result);
}
- createRet(b_.CreateLoad(result));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result));
b_.restoreIP(ip);
return module_->getFunction("log2");
}
@@ -2635,8 +2678,8 @@ Function *CodegenLLVM::createLinearFunction()
// algorithm
{
- Value *min = b_.CreateLoad(min_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
cmp = b_.CreateICmpSLT(val, min);
}
BasicBlock *lt_min = BasicBlock::Create(module_->getContext(), "lhist.lt_min", linear_func);
@@ -2648,8 +2691,8 @@ Function *CodegenLLVM::createLinearFunction()
b_.SetInsertPoint(ge_min);
{
- Value *max = b_.CreateLoad(max_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *max = b_.CreateLoad(b_.getInt64Ty(), max_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
cmp = b_.CreateICmpSGT(val, max);
}
BasicBlock *le_max = BasicBlock::Create(module_->getContext(), "lhist.le_max", linear_func);
@@ -2658,22 +2701,22 @@ Function *CodegenLLVM::createLinearFunction()
b_.SetInsertPoint(gt_max);
{
- Value *step = b_.CreateLoad(step_alloc);
- Value *min = b_.CreateLoad(min_alloc);
- Value *max = b_.CreateLoad(max_alloc);
+ Value *step = b_.CreateLoad(b_.getInt64Ty(), step_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *max = b_.CreateLoad(b_.getInt64Ty(), max_alloc);
Value *div = b_.CreateUDiv(b_.CreateSub(max, min), step);
b_.CreateStore(b_.CreateAdd(div, b_.getInt64(1)), result_alloc);
- createRet(b_.CreateLoad(result_alloc));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result_alloc));
}
b_.SetInsertPoint(le_max);
{
- Value *step = b_.CreateLoad(step_alloc);
- Value *min = b_.CreateLoad(min_alloc);
- Value *val = b_.CreateLoad(value_alloc);
+ Value *step = b_.CreateLoad(b_.getInt64Ty(), step_alloc);
+ Value *min = b_.CreateLoad(b_.getInt64Ty(), min_alloc);
+ Value *val = b_.CreateLoad(b_.getInt64Ty(), value_alloc);
Value *div3 = b_.CreateUDiv(b_.CreateSub(val, min), step);
b_.CreateStore(b_.CreateAdd(div3, b_.getInt64(1)), result_alloc);
- createRet(b_.CreateLoad(result_alloc));
+ createRet(b_.CreateLoad(b_.getInt64Ty(), result_alloc));
}
b_.restoreIP(ip);
@@ -2711,14 +2754,18 @@ void CodegenLLVM::createFormatStringCall(Call &call, int &id, CallArgs &call_arg
// as the struct is not packed we need to memset it.
b_.CREATE_MEMSET(fmt_args, b_.getInt8(0), struct_size, 1);
- Value *id_offset = b_.CreateGEP(fmt_args, {b_.getInt32(0), b_.getInt32(0)});
+ Value *id_offset = b_.CreateGEP(fmt_struct,
+ fmt_args,
+ { b_.getInt32(0), b_.getInt32(0) });
b_.CreateStore(b_.getInt64(id + asyncactionint(async_action)), id_offset);
for (size_t i=1; i<call.vargs->size(); i++)
{
Expression &arg = *call.vargs->at(i);
auto scoped_del = accept(&arg);
- Value *offset = b_.CreateGEP(fmt_args, {b_.getInt32(0), b_.getInt32(i)});
+ Value *offset = b_.CreateGEP(fmt_struct,
+ fmt_args,
+ { b_.getInt32(0), b_.getInt32(i) });
if (needMemcpy(arg.type))
b_.CREATE_MEMCPY(offset, expr_, arg.type.GetSize(), 1);
else if (arg.type.IsIntegerTy() && arg.type.GetSize() < 8)
@@ -2758,10 +2805,12 @@ void CodegenLLVM::generateWatchpointSetupProbe(
// Pull out function argument
Value *ctx = func->arg_begin();
int offset = arch::arg_offset(arg_num);
- Value *addr = b_.CreateLoad(
- b_.getInt64Ty(),
- b_.CreateGEP(ctx, b_.getInt64(offset * sizeof(uintptr_t))),
- "arg" + std::to_string(arg_num));
+ Value *arg = b_.CreateGEP(b_.getInt8Ty(),
+ ctx,
+ b_.getInt64(offset * sizeof(uintptr_t)));
+ Value *addr = b_.CreateLoad(b_.getInt64Ty(),
+ arg,
+ "arg" + std::to_string(arg_num));
// Tell userspace to setup the real watchpoint
auto elements = AsyncEvent::Watchpoint().asLLVMType(b_);
@@ -2772,12 +2821,16 @@ void CodegenLLVM::generateWatchpointSetupProbe(
size_t struct_size = datalayout().getTypeAllocSize(watchpoint_struct);
// Fill in perf event struct
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::watchpoint_attach)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
- b_.CreateStore(b_.getInt64(watchpoint_id_),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::watchpoint_attach)),
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(watchpoint_id_),
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
watchpoint_id_++;
- b_.CreateStore(addr, b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(2) }));
+ b_.CreateStore(
+ addr,
+ b_.CreateGEP(watchpoint_struct, buf, { b_.getInt64(0), b_.getInt32(2) }));
b_.CreatePerfEventOutput(ctx, buf, struct_size);
b_.CreateLifetimeEnd(buf);
@@ -2796,11 +2849,14 @@ void CodegenLLVM::createPrintMapCall(Call &call)
call.func + "_" + map.ident);
// store asyncactionid:
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::print)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::print)),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
auto id = bpftrace_.maps[map.ident].value()->id;
- auto *ident_ptr = b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) });
+ auto *ident_ptr = b_.CreateGEP(print_struct,
+ buf,
+ { b_.getInt64(0), b_.getInt32(1) });
b_.CreateStore(b_.GetIntSameSize(id, elements.at(1)), ident_ptr);
// top, div
@@ -2812,14 +2868,16 @@ void CodegenLLVM::createPrintMapCall(Call &call)
auto scoped_del = accept(call.vargs->at(arg_idx));
b_.CreateStore(b_.CreateIntCast(expr_, elements.at(arg_idx), false),
- b_.CreateGEP(buf,
+ b_.CreateGEP(print_struct,
+ buf,
{ b_.getInt64(0), b_.getInt32(arg_idx + 1) }));
}
for (; arg_idx < 3; arg_idx++)
{
b_.CreateStore(b_.GetIntSameSize(0, elements.at(arg_idx)),
- b_.CreateGEP(buf,
+ b_.CreateGEP(print_struct,
+ buf,
{ b_.getInt64(0), b_.getInt32(arg_idx + 1) }));
}
@@ -2844,15 +2902,19 @@ void CodegenLLVM::createPrintNonMapCall(Call &call, int &id)
size_t struct_size = datalayout().getTypeAllocSize(print_struct);
// Store asyncactionid:
- b_.CreateStore(b_.getInt64(asyncactionint(AsyncAction::print_non_map)),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(0) }));
+ b_.CreateStore(
+ b_.getInt64(asyncactionint(AsyncAction::print_non_map)),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(0) }));
// Store print id
- b_.CreateStore(b_.getInt64(id),
- b_.CreateGEP(buf, { b_.getInt64(0), b_.getInt32(1) }));
+ b_.CreateStore(
+ b_.getInt64(id),
+ b_.CreateGEP(print_struct, buf, { b_.getInt64(0), b_.getInt32(1) }));
// Store content
- Value *content_offset = b_.CreateGEP(buf, { b_.getInt32(0), b_.getInt32(2) });
+ Value *content_offset = b_.CreateGEP(print_struct,
+ buf,
+ { b_.getInt32(0), b_.getInt32(2) });
b_.CREATE_MEMSET(content_offset, b_.getInt8(0), arg.type.GetSize(), 1);
if (needMemcpy(arg.type))
{
@@ -3023,7 +3085,9 @@ void CodegenLLVM::readDatastructElemFromStack(Value *src_data,
src_data = b_.CreateIntToPtr(src_data,
b_.GetType(data_type)->getPointerTo());
- Value *src = b_.CreateGEP(src_data, { b_.getInt32(0), index });
+ Value *src = b_.CreateGEP(b_.GetType(data_type),
+ src_data,
+ { b_.getInt32(0), index });
// It may happen that the result pointer type is not correct, in such case
// do a typecast
@@ -3034,7 +3098,7 @@ void CodegenLLVM::readDatastructElemFromStack(Value *src_data,
if (elem_type.IsIntegerTy() || elem_type.IsPtrTy())
{
// Load the correct type from src
- expr_ = b_.CreateLoad(src, true);
+ expr_ = b_.CreateLoad(b_.GetType(elem_type), src, true);
}
else
{
@@ -3101,7 +3165,8 @@ void CodegenLLVM::probereadDatastructElem(Value *src_data,
// Read data onto stack
if (data_type.IsCtxAccess())
{
- expr_ = b_.CreateLoad(b_.CreateIntToPtr(src, dst_type->getPointerTo()),
+ expr_ = b_.CreateLoad(dst_type,
+ b_.CreateIntToPtr(src, dst_type->getPointerTo()),
true);
expr_ = b_.CreateIntCast(expr_, b_.getInt64Ty(), elem_type.IsSigned());
@@ -3132,7 +3197,7 @@ void CodegenLLVM::probereadDatastructElem(Value *src_data,
AllocaInst *dst = b_.CreateAllocaBPF(elem_type, temp_name);
b_.CreateProbeRead(
ctx_, dst, elem_type.GetSize(), src, data_type.GetAS(), loc);
- expr_ = b_.CreateIntCast(b_.CreateLoad(dst),
+ expr_ = b_.CreateIntCast(b_.CreateLoad(b_.GetType(elem_type), dst),
b_.getInt64Ty(),
elem_type.IsSigned());
b_.CreateLifetimeEnd(dst);
diff --git a/src/ast/irbuilderbpf.cpp b/src/ast/irbuilderbpf.cpp
index ab1464d3..59771e91 100644
--- a/src/ast/irbuilderbpf.cpp
+++ b/src/ast/irbuilderbpf.cpp
@@ -94,8 +94,8 @@ AllocaInst *IRBuilderBPF::CreateUSym(llvm::Value *val)
Value *pid = CreateLShr(CreateGetPidTgid(), 32);
// The extra 0 here ensures the type of addr_offset will be int64
- Value *addr_offset = CreateGEP(buf, { getInt64(0), getInt32(0) });
- Value *pid_offset = CreateGEP(buf, { getInt64(0), getInt32(1) });
+ Value *addr_offset = CreateGEP(usym_t, buf, { getInt64(0), getInt32(0) });
+ Value *pid_offset = CreateGEP(usym_t, buf, { getInt64(0), getInt32(1) });
CreateStore(val, addr_offset);
CreateStore(pid, pid_offset);
@@ -401,7 +401,8 @@ Value *IRBuilderBPF::CreateMapLookupElem(Value *ctx,
if (needMemcpy(type))
return value;
- Value *ret = CreateLoad(value);
+ // value is a pointer to i64
+ Value *ret = CreateLoad(getInt64Ty(), value);
CreateLifetimeEnd(value);
return ret;
}
@@ -621,7 +622,10 @@ Value *IRBuilderBPF::CreateUSDTReadArgument(Value *ctx,
// bpftrace's args are internally represented as 64 bit integers. However,
// the underlying argument (of the target program) may be less than 64
// bits. So we must be careful to zero out unused bits.
- Value* reg = CreateGEP(ctx, getInt64(offset * sizeof(uintptr_t)), "load_register");
+ Value *reg = CreateGEP(getInt8Ty(),
+ ctx,
+ getInt64(offset * sizeof(uintptr_t)),
+ "load_register");
AllocaInst *dst = CreateAllocaBPF(builtin.type, builtin.ident);
Value *index_offset = nullptr;
if (argument->valid & BCC_USDT_ARGUMENT_INDEX_REGISTER_NAME)
@@ -632,7 +636,8 @@ Value *IRBuilderBPF::CreateUSDTReadArgument(Value *ctx,
LOG(FATAL) << "offset for register " << argument->index_register_name
<< " not known";
}
- index_offset = CreateGEP(ctx,
+ index_offset = CreateGEP(getInt8Ty(),
+ ctx,
getInt64(ioffset * sizeof(uintptr_t)),
"load_register");
index_offset = CreateLoad(getInt64Ty(), index_offset);
@@ -754,7 +759,7 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx __attribute__((unused)),
"strcmp.loop",
parent);
- auto *ptr = CreateGEP(val, { getInt32(0), getInt32(i) });
+ auto *ptr = CreateGEP(valp->getElementType(), val, { getInt32(0), getInt32(i) });
Value *l = CreateLoad(getInt8Ty(), ptr);
Value *r = getInt8(c_str[i]);
Value *cmp = CreateICmpNE(l, r, "strcmp.cmp");
@@ -767,7 +772,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx __attribute__((unused)),
CreateBr(str_ne);
SetInsertPoint(str_ne);
- Value *result = CreateLoad(store);
+ // store is a pointer to bool (i1 *)
+ Value *result = CreateLoad(getInt1Ty(), store);
CreateLifetimeEnd(store);
result = CreateIntCast(result, getInt64Ty(), false);
return result;
@@ -817,9 +823,11 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
}
*/
+ auto *val1p = dyn_cast<PointerType>(val1->getType());
+ auto *val2p = dyn_cast<PointerType>(val2->getType());
#ifndef NDEBUG
- PointerType *val1p = cast<PointerType>(val1->getType());
- PointerType *val2p = cast<PointerType>(val2->getType());
+ assert(val1p);
+ assert(val2p);
assert(val1p->getElementType()->isArrayTy() &&
val1p->getElementType()->getArrayElementType() == getInt8Ty());
@@ -852,11 +860,11 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
"strcmp.loop_null_cmp",
parent);
- auto *ptr1 = CreateGEP(val1, { getInt32(0), getInt32(i) });
+ auto *ptr1 = CreateGEP(val1p->getElementType(), val1, { getInt32(0), getInt32(i) });
CreateProbeRead(ctx, val_l, 1, ptr1, as1, loc);
Value *l = CreateLoad(getInt8Ty(), val_l);
- auto *ptr2 = CreateGEP(val2, { getInt32(0), getInt32(i) });
+ auto *ptr2 = CreateGEP(val2p->getElementType(), val2, { getInt32(0), getInt32(i) });
CreateProbeRead(ctx, val_r, 1, ptr2, as2, loc);
Value *r = CreateLoad(getInt8Ty(), val_r);
@@ -878,7 +886,8 @@ Value *IRBuilderBPF::CreateStrncmp(Value *ctx,
CreateBr(str_ne);
SetInsertPoint(str_ne);
- Value *result = CreateLoad(store);
+ // store is a pointer to bool (i1 *)
+ Value *result = CreateLoad(getInt1Ty(), store);
CreateLifetimeEnd(store);
CreateLifetimeEnd(val_l);
CreateLifetimeEnd(val_r);
@@ -1107,7 +1116,7 @@ Value *IRBuilderBPF::CreatKFuncArg(Value *ctx,
{
ctx = CreatePointerCast(ctx, getInt64Ty()->getPointerTo());
Value *expr = CreateLoad(getInt64Ty(),
- CreateGEP(ctx, getInt64(type.kfarg_idx)),
+ CreateGEP(getInt64Ty(), ctx, getInt64(type.kfarg_idx)),
name);
// LLVM 7.0 <= does not have CreateLoad(*Ty, *Ptr, isVolatile, Name),
@@ -1161,12 +1170,15 @@ void IRBuilderBPF::CreateHelperError(Value *ctx,
elements,
true);
AllocaInst *buf = CreateAllocaBPF(helper_error_struct, "helper_error_t");
- CreateStore(GetIntSameSize(asyncactionint(AsyncAction::helper_error),
- elements.at(0)),
- CreateGEP(buf, { getInt64(0), getInt32(0) }));
- CreateStore(GetIntSameSize(error_id, elements.at(1)),
- CreateGEP(buf, { getInt64(0), getInt32(1) }));
- CreateStore(return_value, CreateGEP(buf, { getInt64(0), getInt32(2) }));
+ CreateStore(
+ GetIntSameSize(asyncactionint(AsyncAction::helper_error), elements.at(0)),
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(0) }));
+ CreateStore(
+ GetIntSameSize(error_id, elements.at(1)),
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(1) }));
+ CreateStore(
+ return_value,
+ CreateGEP(helper_error_struct, buf, { getInt64(0), getInt32(2) }));
auto &layout = module_.getDataLayout();
auto struct_size = layout.getTypeAllocSize(helper_error_struct);
@@ -1256,11 +1268,13 @@ void IRBuilderBPF::CreateSeqPrintf(Value *ctx,
ctx = CreatePointerCast(ctx, getInt8Ty()->getPointerTo());
Value *meta = CreateLoad(getInt64Ty()->getPointerTo(),
- CreateGEP(ctx, getInt64(0)),
+ CreateGEP(getInt8Ty(), ctx, getInt64(0)),
"meta");
dyn_cast<LoadInst>(meta)->setVolatile(true);
- Value *seq = CreateLoad(getInt64Ty(), CreateGEP(meta, getInt64(0)), "seq");
+ Value *seq = CreateLoad(getInt64Ty(),
+ CreateGEP(getInt64Ty(), meta, getInt64(0)),
+ "seq");
CallInst *call = createCall(seq_printf_func,
{ seq, fmt, fmt_size, data, data_len },
--
2.35.3
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