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[Driver] Add -fno-split-stack 

Summary: Add -fno-split-stack and rename CC1 option from `-split-stacks`
to `-fsplit-stack`.

Test Plan: check-all

Differential Revision: https://reviews.llvm.org/D99245
This commit is contained in:
Chuanqi Xu 2021-03-24 16:50:39 +08:00
parent 0d2c4db637
commit 20b4f484d1
3 changed files with 8 additions and 7 deletions
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8
clang/include/clang/Driver/Options.td
View File

@ -2377,7 +2377,10 @@ defm signed_char : BoolFOption<"signed-char",
LangOpts<"CharIsSigned">, DefaultTrue,
NegFlag<SetFalse, [CC1Option], "char is unsigned">, PosFlag<SetTrue, [], "char is signed">>,
ShouldParseIf<!strconcat("!", open_cl.KeyPath)>;
def fsplit_stack : Flag<["-"], "fsplit-stack">, Group<f_Group>;
defm split_stack : BoolFOption<"split-stack",
CodeGenOpts<"EnableSegmentedStacks">, DefaultFalse,
NegFlag<SetFalse, [], "Wouldn't use segmented stack">,
PosFlag<SetTrue, [CC1Option], "Use segmented stack">>;
def fstack_protector_all : Flag<["-"], "fstack-protector-all">, Group<f_Group>,
HelpText<"Enable stack protectors for all functions">;
defm stack_clash_protection : BoolFOption<"stack-clash-protection",
@ -4754,9 +4757,6 @@ def mtp : Separate<["-"], "mtp">,
def mlimit_float_precision : Separate<["-"], "mlimit-float-precision">,
HelpText<"Limit float precision to the given value">,
MarshallingInfoString<CodeGenOpts<"LimitFloatPrecision">>;
def split_stacks : Flag<["-"], "split-stacks">,
HelpText<"Try to use a split stack if possible.">,
MarshallingInfoFlag<CodeGenOpts<"EnableSegmentedStacks">>;
def mregparm : Separate<["-"], "mregparm">,
HelpText<"Limit the number of registers available for integer arguments">,
MarshallingInfoInt<CodeGenOpts<"NumRegisterParameters">>;

5
clang/lib/Driver/ToolChains/Clang.cpp
View File

@ -4873,8 +4873,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
options::OPT_fno_experimental_relative_cxx_abi_vtables);
// Handle segmented stacks.
if (Args.hasArg(options::OPT_fsplit_stack))
CmdArgs.push_back("-split-stacks");
if (Args.hasFlag(options::OPT_fsplit_stack, options::OPT_fno_split_stack,
false))
CmdArgs.push_back("-fsplit-stack");
RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);

2
clang/test/Driver/clang_f_opts.c
View File

@ -3,7 +3,7 @@
// RUN: %clang -### -S -fasm -fblocks -fbuiltin -fno-math-errno -fcommon -fpascal-strings -fno-blocks -fno-builtin -fmath-errno -fno-common -fno-pascal-strings -fblocks -fbuiltin -fmath-errno -fcommon -fpascal-strings -fsplit-stack %s 2>&1 | FileCheck -check-prefix=CHECK-OPTIONS1 %s
// RUN: %clang -### -S -fasm -fblocks -fbuiltin -fno-math-errno -fcommon -fpascal-strings -fno-asm -fno-blocks -fno-builtin -fmath-errno -fno-common -fno-pascal-strings -fno-show-source-location -fshort-enums %s 2>&1 | FileCheck -check-prefix=CHECK-OPTIONS2 %s
// CHECK-OPTIONS1: -split-stacks
// CHECK-OPTIONS1: -fsplit-stack
// CHECK-OPTIONS1: -fgnu-keywords
// CHECK-OPTIONS1: -fblocks
// CHECK-OPTIONS1: -fpascal-strings