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[NVPTX] Emit debug info in DWARF-2 by default for Cuda devices. 

Summary:
NVPTX target supports debug info in DWARF-2 format. Patch adds emission
of debug info in DWARF-2 by default.

Reviewers: tra, jlebar

Subscribers: aprantl, JDevlieghere, cfe-commits

Differential Revision: https://reviews.llvm.org/D42581

llvm-svn: 330272
This commit is contained in:
Alexey Bataev 2018-04-18 16:31:09 +00:00
parent 242706b8d1
commit e36c67b35c
5 changed files with 134 additions and 4 deletions
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39
clang/lib/Driver/ToolChains/Cuda.cpp
View File

@ -273,6 +273,35 @@ void CudaInstallationDetector::print(raw_ostream &OS) const {
<< CudaVersionToString(Version) << "\n";
}
namespace {
/// Debug info kind.
enum DebugInfoKind {
NoDebug, /// No debug info.
LineTableOnly, /// Line tables only.
FullDebug /// Full debug info.
};
} // anonymous namespace
static DebugInfoKind mustEmitDebugInfo(const ArgList &Args) {
Arg *A = Args.getLastArg(options::OPT_O_Group);
if (Args.hasFlag(options::OPT_cuda_noopt_device_debug,
options::OPT_no_cuda_noopt_device_debug,
!A || A->getOption().matches(options::OPT_O0))) {
if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
const Option &Opt = A->getOption();
if (Opt.matches(options::OPT_gN_Group)) {
if (Opt.matches(options::OPT_g0) || Opt.matches(options::OPT_ggdb0))
return NoDebug;
if (Opt.matches(options::OPT_gline_tables_only) ||
Opt.matches(options::OPT_ggdb1))
return LineTableOnly;
}
return FullDebug;
}
}
return NoDebug;
}
void NVPTX::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
@ -304,8 +333,8 @@ void NVPTX::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
ArgStringList CmdArgs;
CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-m64" : "-m32");
if (Args.hasFlag(options::OPT_cuda_noopt_device_debug,
options::OPT_no_cuda_noopt_device_debug, false)) {
DebugInfoKind DIKind = mustEmitDebugInfo(Args);
if (DIKind == FullDebug) {
// ptxas does not accept -g option if optimization is enabled, so
// we ignore the compiler's -O* options if we want debug info.
CmdArgs.push_back("-g");
@ -341,6 +370,8 @@ void NVPTX::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
// to no optimizations, but ptxas's default is -O3.
CmdArgs.push_back("-O0");
}
if (DIKind == LineTableOnly)
CmdArgs.push_back("-lineinfo");
// Pass -v to ptxas if it was passed to the driver.
if (Args.hasArg(options::OPT_v))
@ -410,6 +441,8 @@ void NVPTX::Linker::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-64" : "-32");
CmdArgs.push_back(Args.MakeArgString("--create"));
CmdArgs.push_back(Args.MakeArgString(Output.getFilename()));
if (mustEmitDebugInfo(Args) == FullDebug)
CmdArgs.push_back("-g");
for (const auto& II : Inputs) {
auto *A = II.getAction();
@ -461,7 +494,7 @@ void NVPTX::OpenMPLinker::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back(Output.getFilename());
} else
assert(Output.isNothing() && "Invalid output.");
if (Args.hasArg(options::OPT_g_Flag))
if (mustEmitDebugInfo(Args) == FullDebug)
CmdArgs.push_back("-g");
if (Args.hasArg(options::OPT_v))

2
clang/lib/Driver/ToolChains/Cuda.h
View File

@ -180,6 +180,8 @@ public:
computeMSVCVersion(const Driver *D,
const llvm::opt::ArgList &Args) const override;
unsigned GetDefaultDwarfVersion() const override { return 2; }
const ToolChain &HostTC;
CudaInstallationDetector CudaInstallation;

47
clang/test/Driver/cuda-dwarf-2.cu Normal file
View File

@ -0,0 +1,47 @@
// REQUIRES: clang-driver
//
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g -O0 --no-cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g -O3 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g -O3 --no-cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g0 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -ggdb0 -O3 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -ggdb1 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG -check-prefix LINE_TABLE
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -gline-tables-only -O2 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix NO_DEBUG -check-prefix LINE_TABLE
// NO_DEBUG: ptxas
// NO_DEBUG-NOT: "-g"
// LINE_TABLE: "-lineinfo"
// NO_DEBUG: fatbinary
// NO_DEBUG-NOT: "-g"
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g -O0 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g -O3 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g2 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -ggdb2 -O0 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -g3 -O2 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -ggdb3 -O3 --cuda-noopt-device-debug 2>&1 | \
// RUN: FileCheck %s -check-prefix HAS_DEBUG
// HAS_DEBUG: "-fcuda-is-device"
// HAS_DEBUG-SAME: "-dwarf-version=2"
// HAS_DEBUG: ptxas
// HAS_DEBUG-SAME: "-g"
// HAS_DEBUG-SAME: "--dont-merge-basicblocks"
// HAS_DEBUG-SAME: "--return-at-end"
// HAS_DEBUG: fatbinary
// HAS_DEBUG-SAME: "-g"

2
clang/test/Driver/cuda-external-tools.cu
View File

@ -23,7 +23,7 @@
// RUN: | FileCheck -check-prefixes=CHECK,ARCH64,SM20,RDC %s
// With debugging enabled, ptxas should be run with with no ptxas optimizations.
// RUN: %clang -### -target x86_64-linux-gnu --cuda-noopt-device-debug -O2 -c %s 2>&1 \
// RUN: %clang -### -target x86_64-linux-gnu --cuda-noopt-device-debug -O2 -g -c %s 2>&1 \
// RUN: | FileCheck -check-prefixes=CHECK,ARCH64,SM20,DBG %s
// --no-cuda-noopt-device-debug overrides --cuda-noopt-device-debug.

48
clang/test/Driver/openmp-offload-gpu.c
View File

@ -165,3 +165,51 @@
// RUN: | FileCheck -check-prefix=CHK-BCLIB-WARN %s
// CHK-BCLIB-WARN: No library 'libomptarget-nvptx-sm_20.bc' found in the default clang lib directory or in LIBRARY_PATH. Expect degraded performance due to no inlining of runtime functions on target devices.
/// Check that debug info is emitted in dwarf-2
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O0 --no-cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 --no-cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g0 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb0 -O3 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -gline-tables-only 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG -check-prefix=LINE_TABLE %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb1 -O2 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=NO_DEBUG -check-prefix=LINE_TABLE %s
// NO_DEBUG: ptxas
// LINE_TABLE: "-lineinfo"
// NO_DEBUG-NOT: "-g"
// NO_DEBUG: nvlink
// NO_DEBUG-NOT: "-g"
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O0 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g2 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb2 -O0 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g3 -O3 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb3 -O2 --cuda-noopt-device-debug 2>&1 \
// RUN: | FileCheck -check-prefix=HAS_DEBUG %s
// HAS_DEBUG: "-triple" "nvptx64-nvidia-cuda"
// HAS_DEBUG-SAME: "-dwarf-version=2"
// HAS_DEBUG-SAME: "-fopenmp-is-device"
// HAS_DEBUG: ptxas
// HAS_DEBUG-SAME: "-g"
// HAS_DEBUG-SAME: "--dont-merge-basicblocks"
// HAS_DEBUG-SAME: "--return-at-end"
// HAS_DEBUG: nvlink
// HAS_DEBUG-SAME: "-g"