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Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter')
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp70
1 files changed, 40 insertions, 30 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 2f96366..6cf05fd 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -33,6 +33,7 @@
#include "llvm/MC/MCSymbolWasm.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/NVPTXAddrSpace.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
@@ -75,6 +76,26 @@ static dwarf::Tag GetCompileUnitType(UnitKind Kind, DwarfDebug *DW) {
return dwarf::DW_TAG_compile_unit;
}
+/// Translate NVVM IR address space code to DWARF correspondent value
+static unsigned translateToNVVMDWARFAddrSpace(unsigned AddrSpace) {
+ switch (AddrSpace) {
+ case NVPTXAS::ADDRESS_SPACE_GENERIC:
+ return NVPTXAS::DWARF_ADDR_generic_space;
+ case NVPTXAS::ADDRESS_SPACE_GLOBAL:
+ return NVPTXAS::DWARF_ADDR_global_space;
+ case NVPTXAS::ADDRESS_SPACE_SHARED:
+ return NVPTXAS::DWARF_ADDR_shared_space;
+ case NVPTXAS::ADDRESS_SPACE_CONST:
+ return NVPTXAS::DWARF_ADDR_const_space;
+ case NVPTXAS::ADDRESS_SPACE_LOCAL:
+ return NVPTXAS::DWARF_ADDR_local_space;
+ default:
+ llvm_unreachable(
+ "Cannot translate unknown address space to DWARF address space");
+ return AddrSpace;
+ }
+}
+
DwarfCompileUnit::DwarfCompileUnit(unsigned UID, const DICompileUnit *Node,
AsmPrinter *A, DwarfDebug *DW,
DwarfFile *DWU, UnitKind Kind)
@@ -264,14 +285,11 @@ void DwarfCompileUnit::addLocationAttribute(
}
if (Expr) {
- // According to
- // https://docs.nvidia.com/cuda/archive/10.0/ptx-writers-guide-to-interoperability/index.html#cuda-specific-dwarf
- // cuda-gdb requires DW_AT_address_class for all variables to be able to
- // correctly interpret address space of the variable address.
+ // cuda-gdb special requirement. See NVPTXAS::DWARF_AddressSpace
// Decode DW_OP_constu <DWARF Address Space> DW_OP_swap DW_OP_xderef
- // sequence for the NVPTX + gdb target.
- unsigned LocalNVPTXAddressSpace;
+ // sequence to specify corresponding address space.
if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB()) {
+ unsigned LocalNVPTXAddressSpace;
const DIExpression *NewExpr =
DIExpression::extractAddressClass(Expr, LocalNVPTXAddressSpace);
if (NewExpr != Expr) {
@@ -363,6 +381,10 @@ void DwarfCompileUnit::addLocationAttribute(
DD->addArangeLabel(SymbolCU(this, Sym));
addOpAddress(*Loc, Sym);
}
+ if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB() &&
+ !NVPTXAddressSpace)
+ NVPTXAddressSpace =
+ translateToNVVMDWARFAddrSpace(Global->getType()->getAddressSpace());
}
// Global variables attached to symbols are memory locations.
// It would be better if this were unconditional, but malformed input that
@@ -373,13 +395,9 @@ void DwarfCompileUnit::addLocationAttribute(
DwarfExpr->addExpression(Expr);
}
if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB()) {
- // According to
- // https://docs.nvidia.com/cuda/archive/10.0/ptx-writers-guide-to-interoperability/index.html#cuda-specific-dwarf
- // cuda-gdb requires DW_AT_address_class for all variables to be able to
- // correctly interpret address space of the variable address.
- const unsigned NVPTX_ADDR_global_space = 5;
+ // cuda-gdb special requirement. See NVPTXAS::DWARF_AddressSpace
addUInt(*VariableDIE, dwarf::DW_AT_address_class, dwarf::DW_FORM_data1,
- NVPTXAddressSpace.value_or(NVPTX_ADDR_global_space));
+ NVPTXAddressSpace.value_or(NVPTXAS::DWARF_ADDR_global_space));
}
if (Loc)
addBlock(*VariableDIE, dwarf::DW_AT_location, DwarfExpr->finalize());
@@ -793,10 +811,10 @@ void DwarfCompileUnit::applyConcreteDbgVariableAttributes(
const DbgValueLoc *DVal = &Single.getValueLoc();
if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB() &&
!Single.getExpr()) {
- // Lack of expression means it is a register. Registers for PTX need to
- // be marked with DW_AT_address_class = 2. See
- // https://docs.nvidia.com/cuda/archive/10.0/ptx-writers-guide-to-interoperability/index.html#cuda-specific-dwarf
- addUInt(VariableDie, dwarf::DW_AT_address_class, dwarf::DW_FORM_data1, 2);
+ // cuda-gdb special requirement. See NVPTXAS::DWARF_AddressSpace
+ // Lack of expression means it is a register.
+ addUInt(VariableDie, dwarf::DW_AT_address_class, dwarf::DW_FORM_data1,
+ NVPTXAS::DWARF_ADDR_reg_space);
}
if (!DVal->isVariadic()) {
const DbgValueLocEntry *Entry = DVal->getLocEntries().begin();
@@ -922,14 +940,11 @@ void DwarfCompileUnit::applyConcreteDbgVariableAttributes(const Loc::MMI &MMI,
SmallVector<uint64_t, 8> Ops;
TRI->getOffsetOpcodes(Offset, Ops);
- // According to
- // https://docs.nvidia.com/cuda/archive/10.0/ptx-writers-guide-to-interoperability/index.html#cuda-specific-dwarf
- // cuda-gdb requires DW_AT_address_class for all variables to be
- // able to correctly interpret address space of the variable
- // address. Decode DW_OP_constu <DWARF Address Space> DW_OP_swap
- // DW_OP_xderef sequence for the NVPTX + gdb target.
- unsigned LocalNVPTXAddressSpace;
+ // cuda-gdb special requirement. See NVPTXAS::DWARF_AddressSpace.
+ // Decode DW_OP_constu <DWARF Address Space> DW_OP_swap
+ // DW_OP_xderef sequence to specify address space.
if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB()) {
+ unsigned LocalNVPTXAddressSpace;
const DIExpression *NewExpr =
DIExpression::extractAddressClass(Expr, LocalNVPTXAddressSpace);
if (NewExpr != Expr) {
@@ -949,14 +964,9 @@ void DwarfCompileUnit::applyConcreteDbgVariableAttributes(const Loc::MMI &MMI,
DwarfExpr.addExpression(std::move(Cursor));
}
if (Asm->TM.getTargetTriple().isNVPTX() && DD->tuneForGDB()) {
- // According to
- // https://docs.nvidia.com/cuda/archive/10.0/ptx-writers-guide-to-interoperability/index.html#cuda-specific-dwarf
- // cuda-gdb requires DW_AT_address_class for all variables to be
- // able to correctly interpret address space of the variable
- // address.
- const unsigned NVPTX_ADDR_local_space = 6;
+ // cuda-gdb special requirement. See NVPTXAS::DWARF_AddressSpace.
addUInt(VariableDie, dwarf::DW_AT_address_class, dwarf::DW_FORM_data1,
- NVPTXAddressSpace.value_or(NVPTX_ADDR_local_space));
+ NVPTXAddressSpace.value_or(NVPTXAS::DWARF_ADDR_local_space));
}
addBlock(VariableDie, dwarf::DW_AT_location, DwarfExpr.finalize());
if (DwarfExpr.TagOffset)
generated by cgit v1.1 at 2025-09-27 23:41:11 +0000