r363475 - Fixed the --print-supported-cpus test
Author: ziangwan725 Date: Fri Jun 14 16:34:40 2019 New Revision: 363475 URL: http://llvm.org/viewvc/llvm-project?rev=363475&view=rev Log: Fixed the --print-supported-cpus test Add constraints for the test that require specific backend targets to be registered. Remove trailing whitespace in the doc. Differential Revision: https://reviews.llvm.org/D63105 Modified: cfe/trunk/docs/CommandGuide/clang.rst cfe/trunk/test/Driver/print-supported-cpus.c Modified: cfe/trunk/docs/CommandGuide/clang.rst URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/CommandGuide/clang.rst?rev=363475&r1=363474&r2=363475&view=diff == --- cfe/trunk/docs/CommandGuide/clang.rst (original) +++ cfe/trunk/docs/CommandGuide/clang.rst Fri Jun 14 16:34:40 2019 @@ -326,8 +326,8 @@ number of cross compilers, or may only s .. option:: --print-supported-cpus - Print out a list of supported processors for the given target (specified - through --target= or -arch ). If no target is + Print out a list of supported processors for the given target (specified + through --target= or -arch ). If no target is specified, the system default target will be used. .. option:: -march= Modified: cfe/trunk/test/Driver/print-supported-cpus.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/print-supported-cpus.c?rev=363475&r1=363474&r2=363475&view=diff == --- cfe/trunk/test/Driver/print-supported-cpus.c (original) +++ cfe/trunk/test/Driver/print-supported-cpus.c Fri Jun 14 16:34:40 2019 @@ -1,5 +1,6 @@ // Test that the --print-supported-cpus flag works +// REQUIRES: x86-registered-target // RUN: %clang --target=x86_64-unknown-linux-gnu \ // RUN: --print-supported-cpus 2>&1 \ // RUN: | FileCheck %s --check-prefix=CHECK-X86 @@ -7,6 +8,7 @@ // CHECK-X86: corei7 // CHECK-X86: Use -mcpu or -mtune to specify the target's processor. +// REQUIRES: arm-registered-target // RUN: %clang --target=arm-unknown-linux-android \ // RUN: --print-supported-cpus 2>&1 \ // RUN: | FileCheck %s --check-prefix=CHECK-ARM ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
r363464 - Add --print-supported-cpus flag for clang.
Author: ziangwan725
Date: Fri Jun 14 14:42:21 2019
New Revision: 363464
URL: http://llvm.org/viewvc/llvm-project?rev=363464&view=rev
Log:
Add --print-supported-cpus flag for clang.
This patch allows clang users to print out a list of supported CPU models using
clang [--target=] --print-supported-cpus
Then, users can select the CPU model to compile to using
clang --target= -mcpu= a.c
It is a handy feature to help cross compilation.
Added:
cfe/trunk/test/Driver/print-supported-cpus.c
Modified:
cfe/trunk/docs/ClangCommandLineReference.rst
cfe/trunk/docs/CommandGuide/clang.rst
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/include/clang/Frontend/FrontendOptions.h
cfe/trunk/lib/Driver/Driver.cpp
cfe/trunk/lib/Frontend/CompilerInvocation.cpp
cfe/trunk/tools/driver/cc1_main.cpp
Modified: cfe/trunk/docs/ClangCommandLineReference.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/ClangCommandLineReference.rst?rev=363464&r1=363463&r2=363464&view=diff
==
--- cfe/trunk/docs/ClangCommandLineReference.rst (original)
+++ cfe/trunk/docs/ClangCommandLineReference.rst Fri Jun 14 14:42:21 2019
@@ -610,6 +610,10 @@ C++ standard library to use
Generate code for the given target
+.. option:: --print-supported-cpus
+
+Print supported cpu models for the given target
+
.. option:: -time
Time individual commands
Modified: cfe/trunk/docs/CommandGuide/clang.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/CommandGuide/clang.rst?rev=363464&r1=363463&r2=363464&view=diff
==
--- cfe/trunk/docs/CommandGuide/clang.rst (original)
+++ cfe/trunk/docs/CommandGuide/clang.rst Fri Jun 14 14:42:21 2019
@@ -324,6 +324,12 @@ number of cross compilers, or may only s
When building for iPhone OS, specify the minimum version supported by your
application.
+.. option:: --print-supported-cpus
+
+ Print out a list of supported processors for the given target (specified
+ through --target= or -arch ). If no target is
+ specified, the system default target will be used.
+
.. option:: -march=
Specify that Clang should generate code for a specific processor family
Modified: cfe/trunk/include/clang/Driver/Options.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=363464&r1=363463&r2=363464&view=diff
==
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Fri Jun 14 14:42:21 2019
@@ -2632,6 +2632,10 @@ def : Separate<["--"], "no-system-header
def s : Flag<["-"], "s">, Group;
def target : Joined<["--"], "target=">, Flags<[DriverOption, CoreOption]>,
HelpText<"Generate code for the given target">;
+def _print_supported_cpus : Flag<["-", "--"], "print-supported-cpus">,
+ Group, Flags<[CC1Option, CoreOption]>,
+ HelpText<"Print supported cpu models for the given target (if target is not
specified,"
+ " it will print the supported cpus for the default target)">;
def gcc_toolchain : Joined<["--"], "gcc-toolchain=">, Flags<[DriverOption]>,
HelpText<"Use the gcc toolchain at the given directory">;
def time : Flag<["-"], "time">,
Modified: cfe/trunk/include/clang/Frontend/FrontendOptions.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/FrontendOptions.h?rev=363464&r1=363463&r2=363464&view=diff
==
--- cfe/trunk/include/clang/Frontend/FrontendOptions.h (original)
+++ cfe/trunk/include/clang/Frontend/FrontendOptions.h Fri Jun 14 14:42:21 2019
@@ -260,6 +260,9 @@ public:
/// Show timers for individual actions.
unsigned ShowTimers : 1;
+ /// print the supported cpus for the current target
+ unsigned PrintSupportedCPUs : 1;
+
/// Output time trace profile.
unsigned TimeTrace : 1;
Modified: cfe/trunk/lib/Driver/Driver.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Driver.cpp?rev=363464&r1=363463&r2=363464&view=diff
==
--- cfe/trunk/lib/Driver/Driver.cpp (original)
+++ cfe/trunk/lib/Driver/Driver.cpp Fri Jun 14 14:42:21 2019
@@ -1671,7 +1671,8 @@ bool Driver::HandleImmediateArgs(const C
}
if (C.getArgs().hasArg(options::OPT_v) ||
- C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
+ C.getArgs().hasArg(options::OPT__HASH_HASH_HASH) ||
+ C.getArgs().hasArg(options::OPT__print_supported_cpus)) {
PrintVersion(C, llvm::errs());
SuppressMissingInputWarning = true;
}
@@ -3375,6 +3376,17 @@ void Driver::BuildActions(Compilation &C
Args.ClaimAllArgs(options::OPT_cl_compile_Group);
}
+ // If the use specify --print-supported-cpus, clang will only print out
+ // supported cpu names without doing c
r366972 - [Sema] Enable -Wimplicit-float-conversion for integral to floating point precision loss
Author: ziangwan725
Date: Wed Jul 24 17:32:50 2019
New Revision: 366972
URL: http://llvm.org/viewvc/llvm-project?rev=366972&view=rev
Log:
[Sema] Enable -Wimplicit-float-conversion for integral to floating point
precision loss
Issue an warning when the code tries to do an implicit int -> float
conversion, where the float type ha a narrower significant than the
float type.
The new warning is controlled by flag -Wimplicit-int-float-conversion,
under -Wimplicit-float-conversion and -Wconversion.
Differential Revision: https://reviews.llvm.org/D64666
Added:
cfe/trunk/test/Sema/implicit-int-float-conversion.c
Modified:
cfe/trunk/include/clang/Basic/DiagnosticGroups.td
cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
cfe/trunk/lib/Sema/SemaChecking.cpp
cfe/trunk/test/Sema/conversion.c
cfe/trunk/test/Sema/ext_vector_casts.c
Modified: cfe/trunk/include/clang/Basic/DiagnosticGroups.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticGroups.td?rev=366972&r1=366971&r2=366972&view=diff
==
--- cfe/trunk/include/clang/Basic/DiagnosticGroups.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticGroups.td Wed Jul 24 17:32:50 2019
@@ -62,7 +62,8 @@ def BoolConversion : DiagGroup<"bool-con
def IntConversion : DiagGroup<"int-conversion">;
def EnumConversion : DiagGroup<"enum-conversion">;
def ImplicitIntConversion : DiagGroup<"implicit-int-conversion">;
-def ImplicitFloatConversion : DiagGroup<"implicit-float-conversion">;
+def ImplicitIntFloatConversion : DiagGroup<"implicit-int-float-conversion">;
+def ImplicitFloatConversion : DiagGroup<"implicit-float-conversion",
[ImplicitIntFloatConversion]>;
def ImplicitFixedPointConversion :
DiagGroup<"implicit-fixed-point-conversion">;
def FloatOverflowConversion : DiagGroup<"float-overflow-conversion">;
Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=366972&r1=366971&r2=366972&view=diff
==
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Wed Jul 24 17:32:50
2019
@@ -3271,6 +3271,14 @@ def warn_impcast_float_integer : Warning
"implicit conversion turns floating-point number into integer: %0 to %1">,
InGroup, DefaultIgnore;
+// Implicit int -> float conversion precision loss warnings.
+def warn_impcast_integer_float_precision : Warning<
+ "implicit conversion from %0 to %1 may lose precision">,
+ InGroup, DefaultIgnore;
+def warn_impcast_integer_float_precision_constant : Warning<
+ "implicit conversion from %2 to %3 changes value from %0 to %1">,
+ InGroup;
+
def warn_impcast_float_to_integer : Warning<
"implicit conversion from %0 to %1 changes value from %2 to %3">,
InGroup, DefaultIgnore;
Modified: cfe/trunk/lib/Sema/SemaChecking.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaChecking.cpp?rev=366972&r1=366971&r2=366972&view=diff
==
--- cfe/trunk/lib/Sema/SemaChecking.cpp (original)
+++ cfe/trunk/lib/Sema/SemaChecking.cpp Wed Jul 24 17:32:50 2019
@@ -11400,6 +11400,55 @@ CheckImplicitConversion(Sema &S, Expr *E
}
}
+ // If we are casting an integer type to a floating point type, we might
+ // lose accuracy if the floating point type has a narrower significand
+ // than the integer type. Issue warnings for that accuracy loss.
+ if (SourceBT && TargetBT && SourceBT->isIntegerType() &&
+ TargetBT->isFloatingType()) {
+// Determine the number of precision bits in the source integer type.
+IntRange SourceRange = GetExprRange(S.Context, E, S.isConstantEvaluated());
+unsigned int SourcePrecision = SourceRange.Width;
+
+// Determine the number of precision bits in the
+// target floating point type.
+unsigned int TargetPrecision = llvm::APFloatBase::semanticsPrecision(
+ S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)));
+
+if (SourcePrecision > 0 && TargetPrecision > 0 &&
+SourcePrecision > TargetPrecision) {
+
+ llvm::APSInt SourceInt;
+ if (E->isIntegerConstantExpr(SourceInt, S.Context)) {
+// If the source integer is a constant, convert it to the target
+// floating point type. Issue a warning if the value changes
+// during the whole conversion.
+llvm::APFloat TargetFloatValue(
+ S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)));
+llvm::APFloat::opStatus ConversionStatus =
+ TargetFloatValue.convertFromAPInt(SourceInt,
+ SourceBT->isSignedInteger(), llvm::APFloat::rmNearestTiesToEven);
+
+if (ConversionStatus != llvm::APFloat::opOK) {
+ std::string PrettySourceValue = SourceInt.toString(1
r367497 - [Sema] Enable -Wimplicit-float-conversion for integral to floating point precision loss
Author: ziangwan725
Date: Wed Jul 31 17:16:43 2019
New Revision: 367497
URL: http://llvm.org/viewvc/llvm-project?rev=367497&view=rev
Log:
[Sema] Enable -Wimplicit-float-conversion for integral to floating point
precision loss
Issue an warning when the code tries to do an implicit int -> float
conversion, where the float type ha a narrower significant than the
float type.
The new warning is controlled by flag -Wimplicit-int-float-conversion,
under -Wimplicit-float-conversion and -Wconversion. It is also silenced
when c++11 narrowing warning is issued.
Differential Revision: https://reviews.llvm.org/D64666
Added:
cfe/trunk/test/Sema/implicit-int-float-conversion.c
cfe/trunk/test/Sema/implicit-int-float-narrowing.cpp
Modified:
cfe/trunk/include/clang/Basic/DiagnosticGroups.td
cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
cfe/trunk/lib/Sema/SemaChecking.cpp
cfe/trunk/test/Sema/conversion.c
cfe/trunk/test/Sema/ext_vector_casts.c
Modified: cfe/trunk/include/clang/Basic/DiagnosticGroups.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticGroups.td?rev=367497&r1=367496&r2=367497&view=diff
==
--- cfe/trunk/include/clang/Basic/DiagnosticGroups.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticGroups.td Wed Jul 31 17:16:43 2019
@@ -62,7 +62,8 @@ def BoolConversion : DiagGroup<"bool-con
def IntConversion : DiagGroup<"int-conversion">;
def EnumConversion : DiagGroup<"enum-conversion">;
def ImplicitIntConversion : DiagGroup<"implicit-int-conversion">;
-def ImplicitFloatConversion : DiagGroup<"implicit-float-conversion">;
+def ImplicitIntFloatConversion : DiagGroup<"implicit-int-float-conversion">;
+def ImplicitFloatConversion : DiagGroup<"implicit-float-conversion",
[ImplicitIntFloatConversion]>;
def ImplicitFixedPointConversion :
DiagGroup<"implicit-fixed-point-conversion">;
def FloatOverflowConversion : DiagGroup<"float-overflow-conversion">;
Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=367497&r1=367496&r2=367497&view=diff
==
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Wed Jul 31 17:16:43
2019
@@ -3266,6 +3266,14 @@ def warn_impcast_float_integer : Warning
"implicit conversion turns floating-point number into integer: %0 to %1">,
InGroup, DefaultIgnore;
+// Implicit int -> float conversion precision loss warnings.
+def warn_impcast_integer_float_precision : Warning<
+ "implicit conversion from %0 to %1 may lose precision">,
+ InGroup, DefaultIgnore;
+def warn_impcast_integer_float_precision_constant : Warning<
+ "implicit conversion from %2 to %3 changes value from %0 to %1">,
+ InGroup;
+
def warn_impcast_float_to_integer : Warning<
"implicit conversion from %0 to %1 changes value from %2 to %3">,
InGroup, DefaultIgnore;
Modified: cfe/trunk/lib/Sema/SemaChecking.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaChecking.cpp?rev=367497&r1=367496&r2=367497&view=diff
==
--- cfe/trunk/lib/Sema/SemaChecking.cpp (original)
+++ cfe/trunk/lib/Sema/SemaChecking.cpp Wed Jul 31 17:16:43 2019
@@ -10200,7 +10200,8 @@ static bool IsSameFloatAfterCast(const A
IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt));
}
-static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC);
+static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC,
+ bool IsListInit = false);
static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) {
// Suppress cases where we are comparing against an enum constant.
@@ -11161,9 +11162,10 @@ static bool isObjCSignedCharBool(Sema &S
S.getLangOpts().ObjC && S.NSAPIObj->isObjCBOOLType(Ty);
}
-static void
-CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC,
-bool *ICContext = nullptr) {
+static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
+SourceLocation CC,
+bool *ICContext = nullptr,
+bool IsListInit = false) {
if (E->isTypeDependent() || E->isValueDependent()) return;
const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr();
@@ -11405,6 +11407,54 @@ CheckImplicitConversion(Sema &S, Expr *E
}
}
+ // If we are casting an integer type to a floating point type without
+ // initialization-list syntax, we might lose accuracy if the floating
+ // point type has a narrower significand than the integer type.
+ if (SourceBT && TargetBT && SourceBT->isIntegerType() &&
r367502 - [Sema] Enable -Wimplicit-float-conversion for integral to floating point precision loss
Author: ziangwan725
Date: Wed Jul 31 18:39:21 2019
New Revision: 367502
URL: http://llvm.org/viewvc/llvm-project?rev=367502&view=rev
Log:
[Sema] Enable -Wimplicit-float-conversion for integral to floating point
precision loss
Fix one test case for it to be system-independent.
Modified:
cfe/trunk/test/Sema/implicit-int-float-conversion.c
Modified: cfe/trunk/test/Sema/implicit-int-float-conversion.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/implicit-int-float-conversion.c?rev=367502&r1=367501&r2=367502&view=diff
==
--- cfe/trunk/test/Sema/implicit-int-float-conversion.c (original)
+++ cfe/trunk/test/Sema/implicit-int-float-conversion.c Wed Jul 31 18:39:21 2019
@@ -8,13 +8,8 @@ void testAssignment() {
float f = 22;
double b = L;
-#ifndef __ILP32__
- float ff = L;// expected-warning {{implicit conversion from
'long' to 'float' changes value from to 1312}}
- float = UL; // expected-warning {{implicit conversion from
'unsigned long' to 'float' changes value from to 1312}}
-#else
- float ff = L;// expected-warning {{implicit conversion from
'long long' to 'float' changes value from to 1312}}
- float = UL; // expected-warning {{implicit conversion from
'unsigned long long' to 'float' changes value from to
1312}}
-#endif
+ float ff = L;// expected-warning {{changes value from
to 1312}}
+ float = UL; // expected-warning {{changes value from
to 1312}}
long l = L;
float fff = l; // expected-warning {{implicit conversion from 'long' to
'float' may lose precision}}
@@ -23,11 +18,7 @@ void testAssignment() {
void testExpression() {
float a = 0.0f;
-#ifndef __ILP32__
- float b = L + a; // expected-warning {{implicit conversion from
'long' to 'float' changes value from to 1312}}
-#else
- float b = L + a; // expected-warning {{implicit conversion from
'long long' to 'float' changes value from to 1312}}
-#endif
+ float b = L + a; // expected-warning {{changes value from
to 1312}}
float g = + ;
float c = + 2223; // expected-warning {{implicit conversion
from 'int' to 'float' changes value from 4445 to }}
@@ -42,11 +33,7 @@ void testExpression() {
void testCNarrowing() {
// Since this is a C file. C++11 narrowing is not in effect.
// In this case, we should issue warnings.
-#ifndef __ILP32__
- float a = {L}; // expected-warning {{implicit conversion from
'long' to 'float' changes value from to 1312}}
-#else
- float a = {L}; // expected-warning {{implicit conversion from
'long long' to 'float' changes value from to 1312}}
-#endif
+ float a = {L}; // expected-warning {{changes value from
to 1312}}
long b = L;
float c = {b}; // expected-warning {{implicit conversion from 'long' to
'float' may lose precision}}
___
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r364362 - print-supported-cpus quality of life patch.
Author: ziangwan725
Date: Tue Jun 25 16:57:14 2019
New Revision: 364362
URL: http://llvm.org/viewvc/llvm-project?rev=364362&view=rev
Log:
print-supported-cpus quality of life patch.
Claim all input files so that clang does not give a warning. Add two
short-cut aliases: -mcpu=? and -mtune=?.
Modified:
cfe/trunk/docs/ClangCommandLineReference.rst
cfe/trunk/docs/CommandGuide/clang.rst
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/lib/Driver/Driver.cpp
cfe/trunk/test/Driver/print-supported-cpus.c
Modified: cfe/trunk/docs/ClangCommandLineReference.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/ClangCommandLineReference.rst?rev=364362&r1=364361&r2=364362&view=diff
==
--- cfe/trunk/docs/ClangCommandLineReference.rst (original)
+++ cfe/trunk/docs/ClangCommandLineReference.rst Tue Jun 25 16:57:14 2019
@@ -2168,6 +2168,8 @@ Link stack frames through backchain on S
.. option:: -mcpu=, -mv5 (equivalent to -mcpu=hexagonv5), -mv55
(equivalent to -mcpu=hexagonv55), -mv60 (equivalent to -mcpu=hexagonv60), -mv62
(equivalent to -mcpu=hexagonv62), -mv65 (equivalent to -mcpu=hexagonv65)
+Use -mcpu=? to see a list of supported cpu models.
+
.. option:: -mcrc, -mno-crc
Allow use of CRC instructions (ARM/Mips only)
@@ -2302,6 +2304,8 @@ The thread model to use, e.g. posix, sin
.. option:: -mtune=
+Use -mtune=? to see a list of supported cpu models.
+
.. option:: -mtvos-version-min=, -mappletvos-version-min=
.. option:: -municode
Modified: cfe/trunk/docs/CommandGuide/clang.rst
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/CommandGuide/clang.rst?rev=364362&r1=364361&r2=364362&view=diff
==
--- cfe/trunk/docs/CommandGuide/clang.rst (original)
+++ cfe/trunk/docs/CommandGuide/clang.rst Tue Jun 25 16:57:14 2019
@@ -330,6 +330,10 @@ number of cross compilers, or may only s
through --target= or -arch ). If no target is
specified, the system default target will be used.
+.. option:: -mcpu=?, -mtune=?
+
+ Aliases of --print-supported-cpus
+
.. option:: -march=
Specify that Clang should generate code for a specific processor family
Modified: cfe/trunk/include/clang/Driver/Options.td
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=364362&r1=364361&r2=364362&view=diff
==
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Tue Jun 25 16:57:14 2019
@@ -2648,6 +2648,8 @@ def _print_supported_cpus : Flag<["-", "
Group, Flags<[CC1Option, CoreOption]>,
HelpText<"Print supported cpu models for the given target (if target is not
specified,"
" it will print the supported cpus for the default target)">;
+def mcpu_EQ_QUESTION : Flag<["-"], "mcpu=?">, Alias<_print_supported_cpus>;
+def mtune_EQ_QUESTION : Flag<["-"], "mtune=?">, Alias<_print_supported_cpus>;
def gcc_toolchain : Joined<["--"], "gcc-toolchain=">, Flags<[DriverOption]>,
HelpText<"Use the gcc toolchain at the given directory">;
def time : Flag<["-"], "time">,
Modified: cfe/trunk/lib/Driver/Driver.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Driver.cpp?rev=364362&r1=364361&r2=364362&view=diff
==
--- cfe/trunk/lib/Driver/Driver.cpp (original)
+++ cfe/trunk/lib/Driver/Driver.cpp Tue Jun 25 16:57:14 2019
@@ -3377,15 +3377,21 @@ void Driver::BuildActions(Compilation &C
Args.ClaimAllArgs(options::OPT_cl_compile_Group);
}
- // If the use specify --print-supported-cpus, clang will only print out
- // supported cpu names without doing compilation.
+ // if the user specify --print-supported-cpus, or use -mcpu=?, or use
+ // -mtune=? (aliases), clang will only print out supported cpu names
+ // without doing compilation.
if (Arg *A = Args.getLastArg(options::OPT__print_supported_cpus)) {
-Actions.clear();
// the compilation now has only two phases: Input and Compile
// use the --prints-supported-cpus flag as the dummy input to cc1
+Actions.clear();
Action *InputAc = C.MakeAction(*A, types::TY_C);
Actions.push_back(
C.MakeAction(InputAc, types::TY_Nothing));
+// claim all the input files to prevent argument unused warnings
+for (auto &I : Inputs) {
+ const Arg *InputArg = I.second;
+ InputArg->claim();
+}
}
// Claim ignored clang-cl options.
Modified: cfe/trunk/test/Driver/print-supported-cpus.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/print-supported-cpus.c?rev=364362&r1=364361&r2=364362&view=diff
==
--- cfe/trunk/test/Driver/print-supported-cpus.c (original)
+++ cfe/trunk/test/Driver/print-suppor
