DiggerLin updated this revision to Diff 293571.
DiggerLin added a comment.
Herald added subscribers: llvm-commits, kbarton, hiraditya, nemanjai.
Herald added a project: LLVM.
address comment
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D87451/new/
https://reviews.llvm.org/D87451
Files:
clang/docs/ClangCommandLineReference.rst
clang/include/clang/Basic/CodeGenOptions.def
clang/include/clang/Driver/Options.td
clang/lib/CodeGen/BackendUtil.cpp
clang/lib/Driver/ToolChains/Clang.cpp
clang/lib/Frontend/CompilerInvocation.cpp
clang/test/Driver/ignore-xcoff-visibility.cpp
llvm/include/llvm/Target/TargetMachine.h
llvm/include/llvm/Target/TargetOptions.h
llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
Index: llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
===================================================================
--- llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -1686,17 +1686,19 @@
assert(LinkageAttr != MCSA_Invalid && "LinkageAttr should not MCSA_Invalid.");
MCSymbolAttr VisibilityAttr = MCSA_Invalid;
- switch (GV->getVisibility()) {
+ if (!TM.getNoXCOFFVisibility()) {
+ switch (GV->getVisibility()) {
- // TODO: "exported" and "internal" Visibility needs to go here.
- case GlobalValue::DefaultVisibility:
- break;
- case GlobalValue::HiddenVisibility:
- VisibilityAttr = MAI->getHiddenVisibilityAttr();
- break;
- case GlobalValue::ProtectedVisibility:
- VisibilityAttr = MAI->getProtectedVisibilityAttr();
- break;
+ // TODO: "exported" and "internal" Visibility needs to go here.
+ case GlobalValue::DefaultVisibility:
+ break;
+ case GlobalValue::HiddenVisibility:
+ VisibilityAttr = MAI->getHiddenVisibilityAttr();
+ break;
+ case GlobalValue::ProtectedVisibility:
+ VisibilityAttr = MAI->getProtectedVisibilityAttr();
+ break;
+ }
}
OutStreamer->emitXCOFFSymbolLinkageWithVisibility(GVSym, LinkageAttr,
Index: llvm/include/llvm/Target/TargetOptions.h
===================================================================
--- llvm/include/llvm/Target/TargetOptions.h
+++ llvm/include/llvm/Target/TargetOptions.h
@@ -123,9 +123,10 @@
EnableFastISel(false), EnableGlobalISel(false), UseInitArray(false),
DisableIntegratedAS(false), RelaxELFRelocations(false),
FunctionSections(false), DataSections(false),
- UniqueSectionNames(true), UniqueBasicBlockSectionNames(false),
- TrapUnreachable(false), NoTrapAfterNoreturn(false), TLSSize(0),
- EmulatedTLS(false), ExplicitEmulatedTLS(false), EnableIPRA(false),
+ NoXCOFFVisibility(false), UniqueSectionNames(true),
+ UniqueBasicBlockSectionNames(false), TrapUnreachable(false),
+ NoTrapAfterNoreturn(false), TLSSize(0), EmulatedTLS(false),
+ ExplicitEmulatedTLS(false), EnableIPRA(false),
EmitStackSizeSection(false), EnableMachineOutliner(false),
EnableMachineFunctionSplitter(false), SupportsDefaultOutlining(false),
EmitAddrsig(false), EmitCallSiteInfo(false),
@@ -230,6 +231,9 @@
/// Emit data into separate sections.
unsigned DataSections : 1;
+ /// Do not emit visibility attribute for xcoff.
+ unsigned NoXCOFFVisibility : 1;
+
unsigned UniqueSectionNames : 1;
/// Use unique names for basic block sections.
Index: llvm/include/llvm/Target/TargetMachine.h
===================================================================
--- llvm/include/llvm/Target/TargetMachine.h
+++ llvm/include/llvm/Target/TargetMachine.h
@@ -260,6 +260,10 @@
return Options.FunctionSections;
}
+ /// Return true if visibility attribute should not be emitted in xcoff,
+ /// corresponding to -mno-xcoff-visibility.
+ bool getNoXCOFFVisibility() const { return Options.NoXCOFFVisibility; }
+
/// If basic blocks should be emitted into their own section,
/// corresponding to -fbasic-block-sections.
llvm::BasicBlockSection getBBSectionsType() const {
Index: clang/test/Driver/ignore-xcoff-visibility.cpp
===================================================================
--- /dev/null
+++ clang/test/Driver/ignore-xcoff-visibility.cpp
@@ -0,0 +1,110 @@
+// RUN: %clang -target powerpc-unknown-aix -emit-llvm -o - -S %s |\
+// RUN: FileCheck --check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -target powerpc-unknown-aix -o - -S %s |\
+// RUN: FileCheck --check-prefix=NOVISIBILITY-ASM %s
+
+// RUN: %clang -target powerpc-unknown-linux -emit-llvm -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -mno-xcoff-visibility -target powerpc-unknown-aix -emit-llvm -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -mno-xcoff-visibility -target powerpc-unknown-aix -o - -S %s | \
+// RUN: FileCheck -check-prefix=NOVISIBILITY-ASM %s
+
+// RUN: not %clang -mno-xcoff-visibility -target powerpc-unknown-linux -emit-llvm -o - -S %s 2>&1 | \
+// RUN: FileCheck -check-prefix=ERROR %s
+
+// RUN: %clang -fvisibility=default -target powerpc-unknown-aix -emit-llvm -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -fvisibility=default -target powerpc-unknown-aix -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-ASM %s
+
+// RUN: %clang -fvisibility=default -target powerpc-unknown-linux -emit-llvm -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -mno-xcoff-visibility -fvisibility=default -target powerpc-unknown-aix -emit-llvm -o - -S %s | \
+// RUN: FileCheck -check-prefix=VISIBILITY-IR %s
+
+// RUN: %clang -mno-xcoff-visibility -fvisibility=default -target powerpc-unknown-aix -o - -S %s | \
+// RUN: FileCheck -check-prefix=NOVISIBILITY-ASM %s
+
+// RUN: not %clang -mno-xcoff-visibility -fvisibility=default -target powerpc-unknown-linux -emit-llvm -o - -S %s 2>&1 | \
+// RUN: FileCheck -check-prefix=ERROR %s
+
+__attribute__((visibility("hidden"))) void foo_h(int *p) {
+ (*p)++;
+}
+
+__attribute__((visibility("protected"))) int b;
+
+extern __attribute__((visibility("hidden"))) void zoo_extern_h(void);
+
+void (*foo_p)(void) = zoo_extern_h;
+
+__attribute__((visibility("protected"))) void bar() {
+ foo_h(&b);
+ foo_p();
+}
+
+class TestClass {
+public:
+ __attribute__((__visibility__("hidden"))) int value() const noexcept { return 0; }
+};
+
+int main() {
+ TestClass TC;
+ return TC.value();
+}
+
+template <class T>
+class basic {
+public:
+ __attribute__((__visibility__("protected"))) int getdata() { return 1; }
+};
+
+template class basic<int>;
+
+#pragma GCC visibility push(hidden)
+int pramb;
+void prambar() {}
+#pragma GCC visibility pop
+
+// VISIBILITY-IR: @b = protected global i32 0
+// VISIBILITY-IR: @pramb = hidden global i32 0
+// VISIBILITY-IR: define hidden void @_Z5foo_hPi(i32* %p)
+// VISIBILITY-IR: declare hidden void @_Z12zoo_extern_hv()
+// VISIBILITY-IR: define protected void @_Z3barv()
+// VISIBILITY-IR: define linkonce_odr hidden i32 @_ZNK9TestClass5valueEv(%class.TestClass* %this)
+// VISIBILITY-IR: define weak_odr protected i32 @_ZN5basicIiE7getdataEv(%class.basic* %this)
+// VISIBILITY-IR: define hidden void @_Z7prambarv()
+
+// ERROR: unsupported option '-mno-xcoff-visibility' for target 'powerpc-unknown-linux'
+
+// VISIBILITY-ASM: .globl _Z5foo_hPi[DS],hidden
+// VISIBILITY-ASM: .globl ._Z5foo_hPi,hidden
+// VISIBILITY-ASM: .globl _Z3barv[DS],protected
+// VISIBILITY-ASM: .globl ._Z3barv,protected
+// VISIBILITY-ASM: .weak _ZNK9TestClass5valueEv[DS],hidden
+// VISIBILITY-ASM: .weak ._ZNK9TestClass5valueEv,hidden
+// VISIBILITY-ASM: .weak _ZN5basicIiE7getdataEv[DS],protected
+// VISIBILITY-ASM: .weak ._ZN5basicIiE7getdataEv,protected
+// VISIBILITY-ASM: .globl _Z7prambarv[DS],hidden
+// VISIBILITY-ASM: .globl ._Z7prambarv,hidden
+// VISIBILITY-ASM: .globl b,protected
+// VISIBILITY-ASM: .globl pramb,hidden
+
+// NOVISIBILITY-ASM: .globl _Z5foo_hPi[DS]
+// NOVISIBILITY-ASM: .globl ._Z5foo_hPi
+// NOVISIBILITY-ASM: .globl _Z3barv[DS]
+// NOVISIBILITY-ASM: .globl ._Z3barv
+// NOVISIBILITY-ASM: .weak _ZNK9TestClass5valueEv[DS]
+// NOVISIBILITY-ASM: .weak ._ZNK9TestClass5valueEv
+// NOVISIBILITY-ASM: .weak _ZN5basicIiE7getdataEv[DS]
+// NOVISIBILITY-ASM: .weak ._ZN5basicIiE7getdataEv
+// NOVISIBILITY-ASM: .globl _Z7prambarv[DS]
+// NOVISIBILITY-ASM: .globl ._Z7prambarv
+// NOVISIBILITY-ASM: .globl b
+// NOVISIBILITY-ASM: .globl pramb
Index: clang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- clang/lib/Frontend/CompilerInvocation.cpp
+++ clang/lib/Frontend/CompilerInvocation.cpp
@@ -1355,6 +1355,10 @@
}
}
+ if (T.isOSAIX() &&
+ (Args.hasArg(OPT_mno_xcoff_visibility) || !Args.hasArg(OPT_fvisibility)))
+ Opts.NoXCOFFVisibility = 1;
+
Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
bool NeedLocTracking = false;
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -5228,6 +5228,13 @@
}
}
+ if (const Arg *A = Args.getLastArg(options::OPT_mno_xcoff_visibility))
+ if (Triple.isOSAIX())
+ CmdArgs.push_back("-mno-xcoff-visibility");
+ else
+ D.Diag(diag::err_drv_unsupported_opt_for_target)
+ << A->getAsString(Args) << TripleStr;
+
Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,
options::OPT_fno_visibility_inlines_hidden_static_local_var);
Index: clang/lib/CodeGen/BackendUtil.cpp
===================================================================
--- clang/lib/CodeGen/BackendUtil.cpp
+++ clang/lib/CodeGen/BackendUtil.cpp
@@ -517,6 +517,7 @@
Options.EnableMachineFunctionSplitter = CodeGenOpts.SplitMachineFunctions;
Options.FunctionSections = CodeGenOpts.FunctionSections;
Options.DataSections = CodeGenOpts.DataSections;
+ Options.NoXCOFFVisibility = CodeGenOpts.NoXCOFFVisibility;
Options.UniqueSectionNames = CodeGenOpts.UniqueSectionNames;
Options.UniqueBasicBlockSectionNames =
CodeGenOpts.UniqueBasicBlockSectionNames;
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -2548,6 +2548,9 @@
def mzvector : Flag<["-"], "mzvector">, Alias<fzvector>;
def mno_zvector : Flag<["-"], "mno-zvector">, Alias<fno_zvector>;
+def mno_xcoff_visibility : Flag<["-"], "mno-xcoff-visibility">, Group<m_Group>,
+HelpText<"Not emit the visibility attribute when generate object file or asm on AIX OS">,
+ Flags<[CC1Option]>;
def mbackchain : Flag<["-"], "mbackchain">, Group<m_Group>, Flags<[DriverOption,CC1Option]>,
HelpText<"Link stack frames through backchain on System Z">;
def mno_backchain : Flag<["-"], "mno-backchain">, Group<m_Group>, Flags<[DriverOption,CC1Option]>;
Index: clang/include/clang/Basic/CodeGenOptions.def
===================================================================
--- clang/include/clang/Basic/CodeGenOptions.def
+++ clang/include/clang/Basic/CodeGenOptions.def
@@ -37,6 +37,7 @@
CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink
CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
CODEGENOPT(Backchain , 1, 0) ///< -mbackchain
+CODEGENOPT(NoXCOFFVisibility , 1, 0) ///< -mno-xcoff-visibility
CODEGENOPT(ControlFlowGuardNoChecks , 1, 0) ///< -cfguard-no-checks
CODEGENOPT(ControlFlowGuard , 1, 0) ///< -cfguard
CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors.
Index: clang/docs/ClangCommandLineReference.rst
===================================================================
--- clang/docs/ClangCommandLineReference.rst
+++ clang/docs/ClangCommandLineReference.rst
@@ -2307,6 +2307,10 @@
Give inline C++ member functions hidden visibility by default
+.. option:: -mno-xcoff-visibility
+
+Do not emit any visibility attribute for aix asm or xcoff object file.
+
.. option:: -fvisibility-ms-compat
Give global types 'default' visibility and global functions and variables 'hidden' visibility by default
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