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Turn struct-path aware TBAA on by default. 

Use -no-struct-path-tbaa to turn it off.
This is the same as r191695, which was reverted because it depends on a
commit that has issues.

llvm-svn: 192497
This commit is contained in:
Manman Ren 2013-10-11 20:48:38 +00:00
parent fe56be5819
commit f5d9d348f7
8 changed files with 15 additions and 13 deletions
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4
clang/include/clang/Driver/CC1Options.td
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@ -165,8 +165,8 @@ def fuse_register_sized_bitfield_access: Flag<["-"], "fuse-register-sized-bitfie
HelpText<"Use register sized accesses to bit-fields, when possible.">;
def relaxed_aliasing : Flag<["-"], "relaxed-aliasing">,
HelpText<"Turn off Type Based Alias Analysis">;
def struct_path_tbaa : Flag<["-"], "struct-path-tbaa">,
HelpText<"Turn on struct-path aware Type Based Alias Analysis">;
def no_struct_path_tbaa : Flag<["-"], "no-struct-path-tbaa">,
HelpText<"Turn off struct-path aware Type Based Alias Analysis">;
def masm_verbose : Flag<["-"], "masm-verbose">,
HelpText<"Generate verbose assembly output">;
def mcode_model : Separate<["-"], "mcode-model">,

1
clang/include/clang/Driver/Options.td
View File

@ -659,6 +659,7 @@ def fno_spell_checking : Flag<["-"], "fno-spell-checking">, Group<f_Group>,
def fno_stack_protector : Flag<["-"], "fno-stack-protector">, Group<f_Group>;
def fno_strict_aliasing : Flag<["-"], "fno-strict-aliasing">, Group<f_Group>;
def fstruct_path_tbaa : Flag<["-"], "fstruct-path-tbaa">, Group<f_Group>;
def fno_struct_path_tbaa : Flag<["-"], "fno-struct-path-tbaa">, Group<f_Group>;
def fno_strict_enums : Flag<["-"], "fno-strict-enums">, Group<f_Group>;
def fno_strict_overflow : Flag<["-"], "fno-strict-overflow">, Group<f_Group>;
def fno_threadsafe_statics : Flag<["-"], "fno-threadsafe-statics">, Group<f_Group>,

5
clang/lib/Driver/Tools.cpp
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@ -2200,8 +2200,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
options::OPT_fno_strict_aliasing,
getToolChain().IsStrictAliasingDefault()))
CmdArgs.push_back("-relaxed-aliasing");
if (Args.hasArg(options::OPT_fstruct_path_tbaa))
CmdArgs.push_back("-struct-path-tbaa");
if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
options::OPT_fno_struct_path_tbaa))
CmdArgs.push_back("-no-struct-path-tbaa");
if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
false))
CmdArgs.push_back("-fstrict-enums");

2
clang/lib/Frontend/CompilerInvocation.cpp
View File

@ -344,7 +344,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
OPT_fuse_register_sized_bitfield_access);
Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa);
Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
Opts.NoCommon = Args.hasArg(OPT_fno_common);

4
clang/test/CodeGen/bitfield.c
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 | FileCheck %s
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 -struct-path-tbaa | FileCheck %s --check-prefix=PATH
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 -no-struct-path-tbaa | FileCheck %s
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 | FileCheck %s --check-prefix=PATH
static int f0(int n) {
struct s0 {

4
clang/test/CodeGen/may-alias.c
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-optzns -o - %s | FileCheck %s
// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -struct-path-tbaa -disable-llvm-optzns -o - %s | FileCheck %s -check-prefix=PATH
// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -no-struct-path-tbaa -disable-llvm-optzns -o - %s | FileCheck %s
// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-optzns -o - %s | FileCheck %s -check-prefix=PATH
// Types with the may_alias attribute should be considered equivalent
// to char for aliasing.

4
clang/test/CodeGen/tbaa-class.cpp
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -no-struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
// Test TBAA metadata generated by front-end.
typedef unsigned char uint8_t;

4
clang/test/CodeGen/tbaa.cpp
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -no-struct-path-tbaa -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -disable-llvm-optzns %s -emit-llvm -o - | FileCheck %s -check-prefix=PATH
// Test TBAA metadata generated by front-end.
typedef unsigned char uint8_t;