ABataev created this revision.
ABataev added reviewers: tra, echristo.
Herald added subscribers: JDevlieghere, guansong, aprantl.
Added support for the -gline-directives-only option + fixed logic of the
debug info for CUDA devices. If optimization level is O0, then options
--[no-]cuda-noopt-device-debug do not affect the debug info level. If
the optimization level is >O0, debug info options are used +
--no-cuda-noopt-device-debug is used or no --cuda-noopt-device-debug is
used, the optimization level for the device code is kept and the
emission of the debug directives is used.
If the opt level is > O0, debug info is requested +
--cuda-noopt-device-debug option is used, the optimization is disabled
for the device code + required debug info is emitted.
Repository:
rC Clang
https://reviews.llvm.org/D51554
Files:
include/clang/Driver/ToolChain.h
lib/Driver/ToolChains/Clang.cpp
lib/Driver/ToolChains/Cuda.cpp
lib/Driver/ToolChains/Cuda.h
test/Driver/cuda-dwarf-2.cu
test/Driver/openmp-offload-gpu.c
Index: test/Driver/openmp-offload-gpu.c
===================================================================
--- test/Driver/openmp-offload-gpu.c
+++ test/Driver/openmp-offload-gpu.c
@@ -167,29 +167,39 @@
// 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 -O1 --no-cuda-noopt-device-debug 2>&1 \
+// RUN: | FileCheck -check-prefix=LINE_TABLE %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: | FileCheck -check-prefix=LINE_TABLE %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: | FileCheck -check-prefix=LINE_TABLE %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: | FileCheck -check-prefix=LINE_TABLE %s
+// RUN: %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -gline-directives-only 2>&1 \
+// RUN: | FileCheck -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
+// RUN: | FileCheck -check-prefix=LINE_TABLE %s
// LINE_TABLE-NOT: warning: debug
// NO_DEBUG-NOT: warning: debug
+// NO_DEBUG: "-fopenmp-is-device"
+// NO_DEBUG-NOT: "-debug-info-kind=
// NO_DEBUG: ptxas
+// LINE_TABLE: "-triple" "nvptx64-nvidia-cuda"
+// LINE_TABLE-SAME: "-debug-info-kind=line-directives-only"
+// LINE_TABLE-SAME: "-fopenmp-is-device"
+// LINE_TABLE: 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 -O0 --no-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 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 \
@@ -207,6 +217,7 @@
// HAS_DEBUG-NOT: warning: debug
// HAS_DEBUG: "-triple" "nvptx64-nvidia-cuda"
+// HAS_DEBUG-SAME: "-debug-info-kind=limited"
// HAS_DEBUG-SAME: "-dwarf-version=2"
// HAS_DEBUG-SAME: "-fopenmp-is-device"
// HAS_DEBUG: ptxas
Index: test/Driver/cuda-dwarf-2.cu
===================================================================
--- test/Driver/cuda-dwarf-2.cu
+++ test/Driver/cuda-dwarf-2.cu
@@ -1,32 +1,41 @@
// 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 -O1 --no-cuda-noopt-device-debug 2>&1 | \
+// RUN: FileCheck %s -check-prefix LINE_TABLE
// 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: FileCheck %s -check-prefix LINE_TABLE
// 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: FileCheck %s -check-prefix LINE_TABLE
// 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: FileCheck %s -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
+// RUN: FileCheck %s -check-prefix LINE_TABLE
+// RUN: %clang -### -target x86_64-linux-gnu -c --cuda-gpu-arch=sm_20 %s -gline-directives-only -O2 --cuda-noopt-device-debug 2>&1 | \
+// RUN: FileCheck %s -check-prefix LINE_TABLE
// NO_DEBUG-NOT: warning: debug
// LINE_TABLE-NOT: warning: debug
+// NO_DEBUG: "-fcuda-is-device"
+// NO_DEBUG-NOT: "-debug-info-kind=
// NO_DEBUG: ptxas
// NO_DEBUG-NOT: "-g"
-// LINE_TABLE: "-lineinfo"
+// LINE_TABLE: "-fcuda-is-device"
+// LINE_TABLE-SAME: "-debug-info-kind=line-directives-only"
+// LINE_TABLE: ptxas
+// LINE_TABLE-SAME: "-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 -O0 --no-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 | \
@@ -40,6 +49,7 @@
// HAS_DEBUG-NOT: warning: debug
// HAS_DEBUG: "-fcuda-is-device"
+// HAS_DEBUG-SAME: "-debug-info-kind=limited"
// HAS_DEBUG-SAME: "-dwarf-version=2"
// HAS_DEBUG: ptxas
// HAS_DEBUG-SAME: "-g"
Index: lib/Driver/ToolChains/Cuda.h
===================================================================
--- lib/Driver/ToolChains/Cuda.h
+++ lib/Driver/ToolChains/Cuda.h
@@ -159,6 +159,8 @@
bool isPICDefaultForced() const override { return false; }
bool SupportsProfiling() const override { return false; }
bool supportsDebugInfoOption(const llvm::opt::Arg *A) const override;
+ void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
+ const llvm::opt::ArgList &Args) const override;
bool IsMathErrnoDefault() const override { return false; }
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
Index: lib/Driver/ToolChains/Cuda.cpp
===================================================================
--- lib/Driver/ToolChains/Cuda.cpp
+++ lib/Driver/ToolChains/Cuda.cpp
@@ -278,28 +278,29 @@
namespace {
/// Debug info kind.
enum DebugInfoKind {
- NoDebug, /// No debug info.
- LineTableOnly, /// Line tables only.
- FullDebug /// Full debug info.
+ NoDebug, /// No debug info.
+ DebugDirectivesOnly, /// 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;
+ const Arg *A = Args.getLastArg(options::OPT_O_Group);
+ bool IsDebugEnabled = !A || A->getOption().matches(options::OPT_O0) ||
+ Args.hasFlag(options::OPT_cuda_noopt_device_debug,
+ options::OPT_no_cuda_noopt_device_debug,
+ /*Default=*/false);
+ 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) ||
+ Opt.matches(options::OPT_gline_directives_only))
+ return DebugDirectivesOnly;
}
+ return IsDebugEnabled ? FullDebug : DebugDirectivesOnly;
}
return NoDebug;
}
@@ -372,7 +373,7 @@
// to no optimizations, but ptxas's default is -O3.
CmdArgs.push_back("-O0");
}
- if (DIKind == LineTableOnly)
+ if (DIKind == DebugDirectivesOnly)
CmdArgs.push_back("-lineinfo");
// Pass -v to ptxas if it was passed to the driver.
@@ -691,6 +692,21 @@
O.matches(options::OPT_gcolumn_info);
}
+void CudaToolChain::adjustDebugInfoKind(
+ codegenoptions::DebugInfoKind &DebugInfoKind, const ArgList &Args) const {
+ switch (mustEmitDebugInfo(Args)) {
+ case NoDebug:
+ DebugInfoKind = codegenoptions::NoDebugInfo;
+ break;
+ case DebugDirectivesOnly:
+ DebugInfoKind = codegenoptions::DebugDirectivesOnly;
+ break;
+ case FullDebug:
+ DebugInfoKind = codegenoptions::LimitedDebugInfo;
+ break;
+ }
+}
+
void CudaToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Check our CUDA version if we're going to include the CUDA headers.
Index: lib/Driver/ToolChains/Clang.cpp
===================================================================
--- lib/Driver/ToolChains/Clang.cpp
+++ lib/Driver/ToolChains/Clang.cpp
@@ -3058,6 +3058,9 @@
CmdArgs.push_back("-gembed-source");
}
+ // Adjust the debug info kind for the given toolchain.
+ TC.adjustDebugInfoKind(DebugInfoKind, Args);
+
RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DWARFVersion,
DebuggerTuning);
Index: include/clang/Driver/ToolChain.h
===================================================================
--- include/clang/Driver/ToolChain.h
+++ include/clang/Driver/ToolChain.h
@@ -10,6 +10,7 @@
#ifndef LLVM_CLANG_DRIVER_TOOLCHAIN_H
#define LLVM_CLANG_DRIVER_TOOLCHAIN_H
+#include "clang/Basic/DebugInfoOptions.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Sanitizers.h"
#include "clang/Driver/Action.h"
@@ -424,6 +425,10 @@
return true;
}
+ /// Adjust debug information kind considering all passed options.
+ virtual void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
+ const llvm::opt::ArgList &Args) const {}
+
/// GetExceptionModel - Return the tool chain exception model.
virtual llvm::ExceptionHandling
GetExceptionModel(const llvm::opt::ArgList &Args) const;
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