r244437 - [Driver] Fix handling of -fbuiltin/-fcommon when combined with -mkernel
John Brawn via cfe-commits
cfe-commits at lists.llvm.org
Mon Aug 10 04:11:31 PDT 2015
Author: john.brawn
Date: Mon Aug 10 06:11:28 2015
New Revision: 244437
URL: http://llvm.org/viewvc/llvm-project?rev=244437&view=rev
Log:
[Driver] Fix handling of -fbuiltin/-fcommon when combined with -mkernel
-mkernel enables -fno-builtin and -fno-common by default, but allows -fbuiltin
and -fcommon to override that. However "-fbuiltin -fno-builtin" is treated the
same as "-fbuiltin" which is wrong, so fix that. Also fixes similar behaviour
when -fno-common is default.
Differential Revision: http://reviews.llvm.org/D11459
Modified:
cfe/trunk/lib/Driver/Tools.cpp
cfe/trunk/test/Driver/apple-kext-mkernel.c
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=244437&r1=244436&r2=244437&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Mon Aug 10 06:11:28 2015
@@ -4145,7 +4145,8 @@ void Clang::ConstructJob(Compilation &C,
options::OPT_fno_lax_vector_conversions))
CmdArgs.push_back("-fno-lax-vector-conversions");
- if (Args.getLastArg(options::OPT_fapple_kext))
+ if (Args.getLastArg(options::OPT_fapple_kext) ||
+ (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
CmdArgs.push_back("-fapple-kext");
Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
@@ -4279,15 +4280,9 @@ void Clang::ConstructJob(Compilation &C,
A->render(Args, CmdArgs);
}
- if (Args.hasArg(options::OPT_mkernel)) {
- if (!Args.hasArg(options::OPT_fapple_kext) && types::isCXX(InputType))
- CmdArgs.push_back("-fapple-kext");
- if (!Args.hasArg(options::OPT_fbuiltin))
- CmdArgs.push_back("-fno-builtin");
- Args.ClaimAllArgs(options::OPT_fno_builtin);
- }
- // -fbuiltin is default.
- else if (!Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin))
+ // -fbuiltin is default unless -mkernel is used
+ if (!Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
+ !Args.hasArg(options::OPT_mkernel)))
CmdArgs.push_back("-fno-builtin");
if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
@@ -4687,14 +4682,11 @@ void Clang::ConstructJob(Compilation &C,
}
}
- if (KernelOrKext || isNoCommonDefault(getToolChain().getTriple())) {
- if (!Args.hasArg(options::OPT_fcommon))
- CmdArgs.push_back("-fno-common");
- Args.ClaimAllArgs(options::OPT_fno_common);
- }
-
- // -fcommon is default, only pass non-default.
- else if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common))
+ // -fcommon is the default unless compiling kernel code or the target says so
+ bool NoCommonDefault =
+ KernelOrKext || isNoCommonDefault(getToolChain().getTriple());
+ if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
+ !NoCommonDefault))
CmdArgs.push_back("-fno-common");
// -fsigned-bitfields is default, and clang doesn't yet support
Modified: cfe/trunk/test/Driver/apple-kext-mkernel.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/apple-kext-mkernel.c?rev=244437&r1=244436&r2=244437&view=diff
==============================================================================
--- cfe/trunk/test/Driver/apple-kext-mkernel.c (original)
+++ cfe/trunk/test/Driver/apple-kext-mkernel.c Mon Aug 10 06:11:28 2015
@@ -1,15 +1,20 @@
-// RUN: %clang -target x86_64-apple-darwin10 \
-// RUN: -mkernel -### -fsyntax-only %s 2> %t
-// RUN: FileCheck --check-prefix=CHECK-X86 < %t %s
+// RUN: %clang -target x86_64-apple-darwin10 -mkernel -### -fsyntax-only %s 2>&1 | FileCheck --check-prefix=CHECK-X86 %s
+// RUN: %clang -target x86_64-apple-darwin10 -mkernel -### -fsyntax-only -fbuiltin -fno-builtin -fcommon -fno-common %s 2>&1 | FileCheck --check-prefix=CHECK-X86 %s
// CHECK-X86: "-disable-red-zone"
// CHECK-X86: "-fno-builtin"
// CHECK-X86: "-fno-rtti"
// CHECK-X86: "-fno-common"
-// RUN: %clang -target x86_64-apple-darwin10 \
-// RUN: -arch armv7 -mkernel -mstrict-align -### -fsyntax-only %s 2> %t
-// RUN: FileCheck --check-prefix=CHECK-ARM < %t %s
+// RUN: %clang -target x86_64-apple-darwin10 -mkernel -### -fsyntax-only -fbuiltin -fcommon %s 2>&1 | FileCheck --check-prefix=CHECK-X86-2 %s
+
+// CHECK-X86-2: "-disable-red-zone"
+// CHECK-X86-2-NOT: "-fno-builtin"
+// CHECK-X86-2: "-fno-rtti"
+// CHECK-X86-2-NOT: "-fno-common"
+
+// RUN: %clang -target x86_64-apple-darwin10 -arch armv7 -mkernel -mstrict-align -### -fsyntax-only %s 2>&1 | FileCheck --check-prefix=CHECK-ARM %s
+// RUN: %clang -target x86_64-apple-darwin10 -arch armv7 -mkernel -mstrict-align -### -fsyntax-only -fbuiltin -fno-builtin -fcommon -fno-common %s 2>&1 | FileCheck --check-prefix=CHECK-ARM %s
// CHECK-ARM: "-target-feature" "+long-calls"
// CHECK-ARM: "-target-feature" "+strict-align"
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