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Re-land "Emit proper CodeView when -gcodeview is passed without the cl driver." 

Reverts r326116 and re-lands r326113 with a fix to ASan so that it
enables column info in its test suite.

llvm-svn: 326141
This commit is contained in:
Reid Kleckner 2018-02-26 22:55:33 +00:00
parent 87a000dae3
commit 54af3e7e14
3 changed files with 20 additions and 1 deletions
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4
clang/lib/Driver/ToolChains/Clang.cpp
View File

@ -2968,7 +2968,7 @@ static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
// Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
// argument parsing.
if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
if (EmitCodeView) {
// DWARFVersion remains at 0 if no explicit choice was made.
CmdArgs.push_back("-gcodeview");
} else if (DWARFVersion == 0 &&
@ -3567,6 +3567,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
types::ID InputType = Input.getType();
if (D.IsCLMode())
AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
else
EmitCodeView = Args.hasArg(options::OPT_gcodeview);
const Arg *SplitDWARFArg = nullptr;
RenderDebugOptions(getToolChain(), D, RawTriple, Args, EmitCodeView,

13
clang/test/Driver/codeview-column-info.c Normal file
View File

@ -0,0 +1,13 @@
// Check that -dwarf-column-info does not get added to the cc1 line:
// 1) When -gcodeview is present via the clang or clang++ driver
// 2) When /Z7 is present via the cl driver.
// RUN: %clang -### -c -g -gcodeview %s 2> %t1
// RUN: FileCheck < %t1 %s
// RUN: %clangxx -### -c -g -gcodeview %s 2> %t2
// RUN: FileCheck < %t2 %s
// RUN: %clang_cl -### /c /Z7 %s 2> %t2
// RUN: FileCheck < %t2 %s
// CHECK: "-cc1"
// CHECK-NOT: "-dwarf-column-info"

4
compiler-rt/test/lit.common.cfg
View File

@ -37,7 +37,11 @@ if compiler_id == "Clang":
# reports and stack traces even with minimal debug info.
config.debug_info_flags = ["-gline-tables-only"]
if platform.system() == 'Windows':
# On Windows, use CodeView with column info instead of DWARF. Both VS and
# windbg do not behave well when column info is enabled, but users have
# requested it because it makes ASan reports more precise.
config.debug_info_flags.append("-gcodeview")
config.debug_info_flags.append("-gcolumn-info")
elif compiler_id == 'GNU':
config.cxx_mode_flags = ["-x c++"]
config.debug_info_flags = ["-g"]