r229082 - MS ABI: Implement /volatile:ms
David Majnemer
david.majnemer at gmail.com
Thu Feb 12 23:55:48 PST 2015
Author: majnemer
Date: Fri Feb 13 01:55:47 2015
New Revision: 229082
URL: http://llvm.org/viewvc/llvm-project?rev=229082&view=rev
Log:
MS ABI: Implement /volatile:ms
The /volatile:ms semantics turn volatile loads and stores into atomic
acquire and release operations. This distinction is important because
volatile memory operations do not form a happens-before relationship
with non-atomic memory. This means that a volatile store is not
sufficient for implementing a mutex unlock routine.
Differential Revision: http://reviews.llvm.org/D7580
Added:
cfe/trunk/test/CodeGen/ms-volatile.c
Modified:
cfe/trunk/include/clang/Driver/CLCompatOptions.td
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/include/clang/Frontend/CodeGenOptions.def
cfe/trunk/lib/CodeGen/CGAtomic.cpp
cfe/trunk/lib/CodeGen/CGExpr.cpp
cfe/trunk/lib/CodeGen/CGExprAgg.cpp
cfe/trunk/lib/CodeGen/CGExprComplex.cpp
cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
cfe/trunk/lib/CodeGen/CodeGenFunction.h
cfe/trunk/lib/Driver/Tools.cpp
cfe/trunk/lib/Frontend/CompilerInvocation.cpp
cfe/trunk/test/Driver/cl-options.c
cfe/trunk/test/OpenMP/atomic_read_codegen.c
Modified: cfe/trunk/include/clang/Driver/CLCompatOptions.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/CLCompatOptions.td?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/CLCompatOptions.td (original)
+++ cfe/trunk/include/clang/Driver/CLCompatOptions.td Fri Feb 13 01:55:47 2015
@@ -157,6 +157,7 @@ def _SLASH_arch : CLCompileJoined<"arch:
HelpText<"Set architecture for code generation">;
def _SLASH_M_Group : OptionGroup<"</M group>">, Group<cl_compile_Group>;
+def _SLASH_volatile_Group : OptionGroup<"</volatile group>">, Group<cl_compile_Group>;
def _SLASH_EH : CLJoined<"EH">, HelpText<"Exception handling model">;
def _SLASH_EP : CLFlag<"EP">,
@@ -201,7 +202,10 @@ def _SLASH_TC : CLCompileFlag<"TC">, Hel
def _SLASH_Tp : CLCompileJoinedOrSeparate<"Tp">,
HelpText<"Specify a C++ source file">, MetaVarName<"<filename>">;
def _SLASH_TP : CLCompileFlag<"TP">, HelpText<"Treat all source files as C++">;
-
+def _SLASH_volatile_iso : Option<["/", "-"], "volatile:iso", KIND_FLAG>, Group<_SLASH_volatile_Group>,
+ Flags<[CLOption, DriverOption]>, HelpText<"Volatile loads and stores have standard semantics">;
+def _SLASH_volatile_ms : Option<["/", "-"], "volatile:ms", KIND_FLAG>, Group<_SLASH_volatile_Group>,
+ Flags<[CLOption, DriverOption]>, HelpText<"Volatile loads and stores have acquire and release semantics">;
// Ignored:
@@ -220,7 +224,6 @@ def _SLASH_Ob2 : CLIgnoredFlag<"Ob2">;
def _SLASH_RTC : CLIgnoredJoined<"RTC">;
def _SLASH_sdl : CLIgnoredFlag<"sdl">;
def _SLASH_sdl_ : CLIgnoredFlag<"sdl-">;
-def _SLASH_volatile_iso : CLIgnoredFlag<"volatile:iso">;
def _SLASH_w : CLIgnoredJoined<"w">;
def _SLASH_Zc_auto : CLIgnoredFlag<"Zc:auto">;
def _SLASH_Zc_forScope : CLIgnoredFlag<"Zc:forScope">;
@@ -281,7 +284,6 @@ def _SLASH_Qpar : CLFlag<"Qpar">;
def _SLASH_Qvec_report : CLJoined<"Qvec-report">;
def _SLASH_u : CLFlag<"u">;
def _SLASH_V : CLFlag<"V">;
-def _SLASH_volatile_ms : CLFlag<"volatile:ms">;
def _SLASH_WL : CLFlag<"WL">;
def _SLASH_Wp64 : CLFlag<"Wp64">;
def _SLASH_X : CLFlag<"X">;
Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Fri Feb 13 01:55:47 2015
@@ -628,6 +628,7 @@ def fms_extensions : Flag<["-"], "fms-ex
HelpText<"Accept some non-standard constructs supported by the Microsoft compiler">;
def fms_compatibility : Flag<["-"], "fms-compatibility">, Group<f_Group>, Flags<[CC1Option]>,
HelpText<"Enable full Microsoft Visual C++ compatibility">;
+def fms_volatile : Joined<["-"], "fms-volatile">, Group<f_Group>, Flags<[CC1Option]>;
def fmsc_version : Joined<["-"], "fmsc-version=">, Group<f_Group>, Flags<[DriverOption, CoreOption]>,
HelpText<"Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default))">;
def fms_compatibility_version
Modified: cfe/trunk/include/clang/Frontend/CodeGenOptions.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/CodeGenOptions.def?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/include/clang/Frontend/CodeGenOptions.def (original)
+++ cfe/trunk/include/clang/Frontend/CodeGenOptions.def Fri Feb 13 01:55:47 2015
@@ -68,6 +68,7 @@ CODEGENOPT(LessPreciseFPMAD , 1, 0) ///
///< be generated.
CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled.
+CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled.
CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
///< enabled.
Modified: cfe/trunk/lib/CodeGen/CGAtomic.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGAtomic.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGAtomic.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGAtomic.cpp Fri Feb 13 01:55:47 2015
@@ -1006,9 +1006,45 @@ RValue AtomicInfo::convertIntToValue(llv
return convertTempToRValue(Temp, ResultSlot, Loc);
}
+/// An LValue is a candidate for having its loads and stores be made atomic if
+/// we are operating under /volatile:ms *and* the LValue itself is volatile and
+/// performing such an operation can be performed without a libcall.
+bool CodeGenFunction::LValueIsSuitableForInlineAtomic(LValue LV) {
+ AtomicInfo AI(*this, LV);
+ bool IsVolatile = LV.isVolatile() || hasVolatileMember(LV.getType());
+ // An atomic is inline if we don't need to use a libcall.
+ bool AtomicIsInline = !AI.shouldUseLibcall();
+ return CGM.getCodeGenOpts().MSVolatile && IsVolatile && AtomicIsInline;
+}
+
+/// An type is a candidate for having its loads and stores be made atomic if
+/// we are operating under /volatile:ms *and* we know the access is volatile and
+/// performing such an operation can be performed without a libcall.
+bool CodeGenFunction::typeIsSuitableForInlineAtomic(QualType Ty,
+ bool IsVolatile) const {
+ // An atomic is inline if we don't need to use a libcall (e.g. it is builtin).
+ bool AtomicIsInline = getContext().getTargetInfo().hasBuiltinAtomic(
+ getContext().getTypeSize(Ty), getContext().getTypeAlign(Ty));
+ return CGM.getCodeGenOpts().MSVolatile && IsVolatile && AtomicIsInline;
+}
+
+RValue CodeGenFunction::EmitAtomicLoad(LValue LV, SourceLocation SL,
+ AggValueSlot Slot) {
+ llvm::AtomicOrdering AO;
+ bool IsVolatile = LV.isVolatileQualified();
+ if (LV.getType()->isAtomicType()) {
+ AO = llvm::SequentiallyConsistent;
+ } else {
+ AO = llvm::Acquire;
+ IsVolatile = true;
+ }
+ return EmitAtomicLoad(LV, SL, AO, IsVolatile, Slot);
+}
+
/// Emit a load from an l-value of atomic type. Note that the r-value
/// we produce is an r-value of the atomic *value* type.
RValue CodeGenFunction::EmitAtomicLoad(LValue src, SourceLocation loc,
+ llvm::AtomicOrdering AO, bool IsVolatile,
AggValueSlot resultSlot) {
AtomicInfo atomics(*this, src);
LValue LVal = atomics.getAtomicLValue();
@@ -1060,11 +1096,11 @@ RValue CodeGenFunction::EmitAtomicLoad(L
// Okay, we're doing this natively.
llvm::Value *addr = atomics.emitCastToAtomicIntPointer(SrcAddr);
llvm::LoadInst *load = Builder.CreateLoad(addr, "atomic-load");
- load->setAtomic(llvm::SequentiallyConsistent);
+ load->setAtomic(AO);
// Other decoration.
load->setAlignment(src.getAlignment().getQuantity());
- if (src.isVolatileQualified())
+ if (IsVolatile)
load->setVolatile(true);
if (src.getTBAAInfo())
CGM.DecorateInstruction(load, src.getTBAAInfo());
@@ -1161,12 +1197,27 @@ llvm::Value *AtomicInfo::convertRValueTo
getAtomicAlignment().getQuantity());
}
+void CodeGenFunction::EmitAtomicStore(RValue rvalue, LValue lvalue,
+ bool isInit) {
+ bool IsVolatile = lvalue.isVolatileQualified();
+ llvm::AtomicOrdering AO;
+ if (lvalue.getType()->isAtomicType()) {
+ AO = llvm::SequentiallyConsistent;
+ } else {
+ AO = llvm::Release;
+ IsVolatile = true;
+ }
+ return EmitAtomicStore(rvalue, lvalue, AO, IsVolatile, isInit);
+}
+
/// Emit a store to an l-value of atomic type.
///
/// Note that the r-value is expected to be an r-value *of the atomic
/// type*; this means that for aggregate r-values, it should include
/// storage for any padding that was necessary.
-void CodeGenFunction::EmitAtomicStore(RValue rvalue, LValue dest, bool isInit) {
+void CodeGenFunction::EmitAtomicStore(RValue rvalue, LValue dest,
+ llvm::AtomicOrdering AO, bool IsVolatile,
+ bool isInit) {
// If this is an aggregate r-value, it should agree in type except
// maybe for address-space qualification.
assert(!rvalue.isAggregate() ||
@@ -1209,11 +1260,11 @@ void CodeGenFunction::EmitAtomicStore(RV
llvm::StoreInst *store = Builder.CreateStore(intValue, addr);
// Initializations don't need to be atomic.
- if (!isInit) store->setAtomic(llvm::SequentiallyConsistent);
+ if (!isInit) store->setAtomic(AO);
// Other decoration.
store->setAlignment(dest.getAlignment().getQuantity());
- if (dest.isVolatileQualified())
+ if (IsVolatile)
store->setVolatile(true);
if (dest.getTBAAInfo())
CGM.DecorateInstruction(store, dest.getTBAAInfo());
Modified: cfe/trunk/lib/CodeGen/CGExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExpr.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExpr.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExpr.cpp Fri Feb 13 01:55:47 2015
@@ -1136,7 +1136,7 @@ llvm::Value *CodeGenFunction::EmitLoadOf
}
// Atomic operations have to be done on integral types.
- if (Ty->isAtomicType()) {
+ if (Ty->isAtomicType() || typeIsSuitableForInlineAtomic(Ty, Volatile)) {
LValue lvalue = LValue::MakeAddr(Addr, Ty,
CharUnits::fromQuantity(Alignment),
getContext(), TBAAInfo);
@@ -1255,7 +1255,8 @@ void CodeGenFunction::EmitStoreOfScalar(
Value = EmitToMemory(Value, Ty);
- if (Ty->isAtomicType()) {
+ if (Ty->isAtomicType() ||
+ (!isInit && typeIsSuitableForInlineAtomic(Ty, Volatile))) {
EmitAtomicStore(RValue::get(Value),
LValue::MakeAddr(Addr, Ty,
CharUnits::fromQuantity(Alignment),
Modified: cfe/trunk/lib/CodeGen/CGExprAgg.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprAgg.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExprAgg.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExprAgg.cpp Fri Feb 13 01:55:47 2015
@@ -212,7 +212,7 @@ void AggExprEmitter::EmitAggLoadOfLValue
LValue LV = CGF.EmitLValue(E);
// If the type of the l-value is atomic, then do an atomic load.
- if (LV.getType()->isAtomicType()) {
+ if (LV.getType()->isAtomicType() || CGF.LValueIsSuitableForInlineAtomic(LV)) {
CGF.EmitAtomicLoad(LV, E->getExprLoc(), Dest);
return;
}
@@ -865,7 +865,8 @@ void AggExprEmitter::VisitBinAssign(cons
LValue LHS = CGF.EmitCheckedLValue(E->getLHS(), CodeGenFunction::TCK_Store);
// That copy is an atomic copy if the LHS is atomic.
- if (LHS.getType()->isAtomicType()) {
+ if (LHS.getType()->isAtomicType() ||
+ CGF.LValueIsSuitableForInlineAtomic(LHS)) {
CGF.EmitAtomicStore(Dest.asRValue(), LHS, /*isInit*/ false);
return;
}
@@ -882,7 +883,8 @@ void AggExprEmitter::VisitBinAssign(cons
// If we have an atomic type, evaluate into the destination and then
// do an atomic copy.
- if (LHS.getType()->isAtomicType()) {
+ if (LHS.getType()->isAtomicType() ||
+ CGF.LValueIsSuitableForInlineAtomic(LHS)) {
EnsureDest(E->getRHS()->getType());
Visit(E->getRHS());
CGF.EmitAtomicStore(Dest.asRValue(), LHS, /*isInit*/ false);
Modified: cfe/trunk/lib/CodeGen/CGExprComplex.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprComplex.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExprComplex.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExprComplex.cpp Fri Feb 13 01:55:47 2015
@@ -336,7 +336,8 @@ ComplexPairTy ComplexExprEmitter::EmitLo
/// specified value pointer.
void ComplexExprEmitter::EmitStoreOfComplex(ComplexPairTy Val, LValue lvalue,
bool isInit) {
- if (lvalue.getType()->isAtomicType())
+ if (lvalue.getType()->isAtomicType() ||
+ (!isInit && CGF.LValueIsSuitableForInlineAtomic(lvalue)))
return CGF.EmitAtomicStore(RValue::getComplex(Val), lvalue, isInit);
llvm::Value *Ptr = lvalue.getAddress();
Modified: cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp Fri Feb 13 01:55:47 2015
@@ -829,8 +829,11 @@ static void EmitOMPAtomicReadExpr(CodeGe
assert(X->isLValue() && "X of 'omp atomic read' is not lvalue");
LValue XLValue = CGF.EmitLValue(X);
LValue VLValue = CGF.EmitLValue(V);
- RValue Res = XLValue.isGlobalReg() ? CGF.EmitLoadOfLValue(XLValue, Loc)
- : CGF.EmitAtomicLoad(XLValue, Loc);
+ RValue Res = XLValue.isGlobalReg()
+ ? CGF.EmitLoadOfLValue(XLValue, Loc)
+ : CGF.EmitAtomicLoad(XLValue, Loc,
+ IsSeqCst ? llvm::SequentiallyConsistent
+ : llvm::Monotonic);
// OpenMP, 2.12.6, atomic Construct
// Any atomic construct with a seq_cst clause forces the atomically
// performed operation to include an implicit flush operation without a
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Fri Feb 13 01:55:47 2015
@@ -2147,11 +2147,21 @@ public:
void EmitAtomicInit(Expr *E, LValue lvalue);
+ bool LValueIsSuitableForInlineAtomic(LValue Src);
+ bool typeIsSuitableForInlineAtomic(QualType Ty, bool IsVolatile) const;
+
+ RValue EmitAtomicLoad(LValue LV, SourceLocation SL,
+ AggValueSlot Slot = AggValueSlot::ignored());
+
RValue EmitAtomicLoad(LValue lvalue, SourceLocation loc,
+ llvm::AtomicOrdering AO, bool IsVolatile = false,
AggValueSlot slot = AggValueSlot::ignored());
void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit);
+ void EmitAtomicStore(RValue rvalue, LValue lvalue, llvm::AtomicOrdering AO,
+ bool IsVolatile, bool isInit);
+
std::pair<RValue, RValue> EmitAtomicCompareExchange(
LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc,
llvm::AtomicOrdering Success = llvm::SequentiallyConsistent,
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Fri Feb 13 01:55:47 2015
@@ -4888,6 +4888,19 @@ void Clang::AddClangCLArgs(const ArgList
CmdArgs.push_back("-P");
}
+ unsigned VolatileOptionID;
+ if (getToolChain().getTriple().getArch() == llvm::Triple::x86_64 ||
+ getToolChain().getTriple().getArch() == llvm::Triple::x86)
+ VolatileOptionID = options::OPT__SLASH_volatile_ms;
+ else
+ VolatileOptionID = options::OPT__SLASH_volatile_iso;
+
+ if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
+ VolatileOptionID = A->getOption().getID();
+
+ if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
+ CmdArgs.push_back("-fms-volatile");
+
Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
if (MostGeneralArg && BestCaseArg)
Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Fri Feb 13 01:55:47 2015
@@ -477,6 +477,8 @@ static bool ParseCodeGenArgs(CodeGenOpti
OPT_fno_data_sections, false);
Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
+ Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
+
Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
Added: cfe/trunk/test/CodeGen/ms-volatile.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/ms-volatile.c?rev=229082&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/ms-volatile.c (added)
+++ cfe/trunk/test/CodeGen/ms-volatile.c Fri Feb 13 01:55:47 2015
@@ -0,0 +1,62 @@
+// RUN: %clang_cc1 -triple i386-pc-win32 -emit-llvm -fms-volatile -o - < %s | FileCheck %s
+struct foo {
+ volatile int x;
+};
+struct bar {
+ int x;
+};
+typedef _Complex float __declspec(align(8)) baz;
+
+void test1(struct foo *p, struct foo *q) {
+ *p = *q;
+ // CHECK-LABEL: @test1
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test2(volatile int *p, volatile int *q) {
+ *p = *q;
+ // CHECK-LABEL: @test2
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test3(struct foo *p, struct foo *q) {
+ p->x = q->x;
+ // CHECK-LABEL: @test3
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test4(volatile struct foo *p, volatile struct foo *q) {
+ p->x = q->x;
+ // CHECK-LABEL: @test4
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test5(volatile struct foo *p, volatile struct foo *q) {
+ *p = *q;
+ // CHECK-LABEL: @test5
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test6(struct bar *p, struct bar *q) {
+ *p = *q;
+ // CHECK-LABEL: @test6
+ // CHECK-NOT: load atomic volatile {{.*}}
+ // CHECK-NOT: store atomic volatile {{.*}}, {{.*}}
+}
+void test7(volatile struct bar *p, volatile struct bar *q) {
+ *p = *q;
+ // CHECK-LABEL: @test7
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test8(volatile double *p, volatile double *q) {
+ *p = *q;
+ // CHECK-LABEL: @test8
+ // CHECK: load atomic volatile {{.*}} acquire
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
+void test9(volatile baz *p, baz *q) {
+ *p = *q;
+ // CHECK-LABEL: @test9
+ // CHECK: store atomic volatile {{.*}}, {{.*}} release
+}
Modified: cfe/trunk/test/Driver/cl-options.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/cl-options.c?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/test/Driver/cl-options.c (original)
+++ cfe/trunk/test/Driver/cl-options.c Fri Feb 13 01:55:47 2015
@@ -123,6 +123,12 @@
// RUN: %clang_cl /vmg /vmm /vms -### -- %s 2>&1 | FileCheck -check-prefix=VMX %s
// VMX: '/vms' not allowed with '/vmm'
+// RUN: %clang_cl /volatile:iso -### -- %s 2>&1 | FileCheck -check-prefix=VOLATILE-ISO %s
+// VOLATILE-ISO-NOT: "-fms-volatile"
+
+// RUN: %clang_cl /volatile:ms -### -- %s 2>&1 | FileCheck -check-prefix=VOLATILE-MS %s
+// VOLATILE-MS: "-fms-volatile"
+
// RUN: %clang_cl /W0 -### -- %s 2>&1 | FileCheck -check-prefix=W0 %s
// W0: -w
Modified: cfe/trunk/test/OpenMP/atomic_read_codegen.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/OpenMP/atomic_read_codegen.c?rev=229082&r1=229081&r2=229082&view=diff
==============================================================================
--- cfe/trunk/test/OpenMP/atomic_read_codegen.c (original)
+++ cfe/trunk/test/OpenMP/atomic_read_codegen.c Fri Feb 13 01:55:47 2015
@@ -225,7 +225,7 @@ int main() {
// CHECK: store double
#pragma omp atomic read
cdv = llx;
-// CHECK: [[I128VAL:%.+]] = load atomic i128* bitcast (<4 x i32>* @{{.+}} to i128*) seq_cst
+// CHECK: [[I128VAL:%.+]] = load atomic i128* bitcast (<4 x i32>* @{{.+}} to i128*) monotonic
// CHECK: [[I128PTR:%.+]] = bitcast <4 x i32>* [[LDTEMP:%.+]] to i128*
// CHECK: store i128 [[I128VAL]], i128* [[I128PTR]]
// CHECK: [[LD:%.+]] = load <4 x i32>* [[LDTEMP]]
@@ -233,7 +233,7 @@ int main() {
// CHECK: store i8
#pragma omp atomic read
bv = int4x[0];
-// CHECK: [[LD:%.+]] = load atomic i32* bitcast (i8* getelementptr (i8* bitcast (%{{.+}}* @{{.+}} to i8*), i64 4) to i32*) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i32* bitcast (i8* getelementptr (i8* bitcast (%{{.+}}* @{{.+}} to i8*), i64 4) to i32*) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i32 [[LD]], 1
@@ -249,21 +249,21 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx_packed.a;
-// CHECK: [[LD:%.+]] = load atomic i32* getelementptr inbounds (%struct.BitFields2* @bfx2, i32 0, i32 0) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i32* getelementptr inbounds (%struct.BitFields2* @bfx2, i32 0, i32 0) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32* [[LDTEMP]]
// CHECK: ashr i32 [[LD]], 31
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx2.a;
-// CHECK: [[LD:%.+]] = load atomic i8* getelementptr (i8* bitcast (%struct.BitFields2_packed* @bfx2_packed to i8*), i64 3) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i8* getelementptr (i8* bitcast (%struct.BitFields2_packed* @bfx2_packed to i8*), i64 3) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8* [[LDTEMP]]
// CHECK: ashr i8 [[LD]], 7
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx2_packed.a;
-// CHECK: [[LD:%.+]] = load atomic i32* getelementptr inbounds (%struct.BitFields3* @bfx3, i32 0, i32 0) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i32* getelementptr inbounds (%struct.BitFields3* @bfx3, i32 0, i32 0) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i32 [[LD]], 7
@@ -280,7 +280,7 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx3_packed.a;
-// CHECK: [[LD:%.+]] = load atomic i64* bitcast (%struct.BitFields4* @bfx4 to i64*) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i64* bitcast (%struct.BitFields4* @bfx4 to i64*) monotonic
// CHECK: store i64 [[LD]], i64* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i64* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i64 [[LD]], 47
@@ -289,7 +289,7 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx4.a;
-// CHECK: [[LD:%.+]] = load atomic i8* getelementptr inbounds (%struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i8* getelementptr inbounds (%struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i8 [[LD]], 7
@@ -298,7 +298,7 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx4_packed.a;
-// CHECK: [[LD:%.+]] = load atomic i64* bitcast (%struct.BitFields4* @bfx4 to i64*) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i64* bitcast (%struct.BitFields4* @bfx4 to i64*) monotonic
// CHECK: store i64 [[LD]], i64* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i64* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i64 [[LD]], 40
@@ -306,7 +306,7 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx4.b;
-// CHECK: [[LD:%.+]] = load atomic i8* getelementptr inbounds (%struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i8* getelementptr inbounds (%struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8* [[LDTEMP]]
// CHECK: [[ASHR:%.+]] = ashr i8 [[LD]], 1
@@ -314,7 +314,7 @@ int main() {
// CHECK: store x86_fp80
#pragma omp atomic read
ldv = bfx4_packed.b;
-// CHECK: [[LD:%.+]] = load atomic i32* bitcast (<2 x float>* @{{.+}} to i32*) seq_cst
+// CHECK: [[LD:%.+]] = load atomic i32* bitcast (<2 x float>* @{{.+}} to i32*) monotonic
// CHECK: [[BITCAST:%.+]] = bitcast <2 x float>* [[LDTEMP:%.+]] to i32*
// CHECK: store i32 [[LD]], i32* [[BITCAST]]
// CHECK: [[LD:%.+]] = load <2 x float>* [[LDTEMP]]
More information about the cfe-commits
mailing list