r260697 - [CUDA] Tweak attribute-based overload resolution to match nvcc behavior.
Artem Belevich via cfe-commits
cfe-commits at lists.llvm.org
Fri Feb 12 10:29:18 PST 2016
Author: tra
Date: Fri Feb 12 12:29:18 2016
New Revision: 260697
URL: http://llvm.org/viewvc/llvm-project?rev=260697&view=rev
Log:
[CUDA] Tweak attribute-based overload resolution to match nvcc behavior.
This is an artefact of split-mode CUDA compilation that we need to
mimic. HD functions are sometimes allowed to call H or D functions. Due
to split compilation mode device-side compilation will not see host-only
function and thus they will not be considered at all. For clang both H
and D variants will become function overloads visible to
compiler. Normally target attribute is considered only if C++ rules can
not determine which function is better. However in this case we need to
ignore functions that would not be present during current compilation
phase before we apply normal overload resolution rules.
Changes:
* introduced another level of call preference to better describe
possible call combinations.
* removed WrongSide functions from consideration if the set contains
SameSide function.
* disabled H->D, D->H and G->H calls. These combinations are
not allowed by CUDA and we were reluctantly allowing them to work
around device-side calls to math functions in std namespace.
We no longer need it after r258880.
Differential Revision: http://reviews.llvm.org/D16870
Modified:
cfe/trunk/include/clang/Sema/Sema.h
cfe/trunk/lib/Sema/SemaCUDA.cpp
cfe/trunk/lib/Sema/SemaOverload.cpp
cfe/trunk/test/CodeGenCUDA/function-overload.cu
cfe/trunk/test/SemaCUDA/function-overload.cu
Modified: cfe/trunk/include/clang/Sema/Sema.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=260697&r1=260696&r2=260697&view=diff
==============================================================================
--- cfe/trunk/include/clang/Sema/Sema.h (original)
+++ cfe/trunk/include/clang/Sema/Sema.h Fri Feb 12 12:29:18 2016
@@ -8794,12 +8794,18 @@ public:
CUDAFunctionTarget IdentifyCUDATarget(const FunctionDecl *D);
+ // CUDA function call preference. Must be ordered numerically from
+ // worst to best.
enum CUDAFunctionPreference {
CFP_Never, // Invalid caller/callee combination.
- CFP_LastResort, // Lowest priority. Only in effect if
+ CFP_WrongSide, // Calls from host-device to host or device
+ // function that do not match current compilation
+ // mode. Only in effect if
// LangOpts.CUDADisableTargetCallChecks is true.
- CFP_Fallback, // Low priority caller/callee combination
- CFP_Best, // Preferred caller/callee combination
+ CFP_HostDevice, // Any calls to host/device functions.
+ CFP_SameSide, // Calls from host-device to host or device
+ // function matching current compilation mode.
+ CFP_Native, // host-to-host or device-to-device calls.
};
/// Identifies relative preference of a given Caller/Callee
Modified: cfe/trunk/lib/Sema/SemaCUDA.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaCUDA.cpp?rev=260697&r1=260696&r2=260697&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaCUDA.cpp (original)
+++ cfe/trunk/lib/Sema/SemaCUDA.cpp Fri Feb 12 12:29:18 2016
@@ -68,26 +68,26 @@ Sema::CUDAFunctionTarget Sema::IdentifyC
// Ph - preference in host mode
// Pd - preference in device mode
// H - handled in (x)
-// Preferences: b-best, f-fallback, l-last resort, n-never.
+// Preferences: N:native, HD:host-device, SS:same side, WS:wrong side, --:never.
//
-// | F | T | Ph | Pd | H |
-// |----+----+----+----+-----+
-// | d | d | b | b | (b) |
-// | d | g | n | n | (a) |
-// | d | h | l | l | (e) |
-// | d | hd | f | f | (c) |
-// | g | d | b | b | (b) |
-// | g | g | n | n | (a) |
-// | g | h | l | l | (e) |
-// | g | hd | f | f | (c) |
-// | h | d | l | l | (e) |
-// | h | g | b | b | (b) |
-// | h | h | b | b | (b) |
-// | h | hd | f | f | (c) |
-// | hd | d | l | f | (d) |
-// | hd | g | f | n |(d/a)|
-// | hd | h | f | l | (d) |
-// | hd | hd | b | b | (b) |
+// | F | T | Ph | Pd | H |
+// |----+----+-----+-----+-----+
+// | d | d | N | N | (c) |
+// | d | g | -- | -- | (a) |
+// | d | h | -- | -- | (e) |
+// | d | hd | HD | HD | (b) |
+// | g | d | N | N | (c) |
+// | g | g | -- | -- | (a) |
+// | g | h | -- | -- | (e) |
+// | g | hd | HD | HD | (b) |
+// | h | d | -- | -- | (e) |
+// | h | g | N | N | (c) |
+// | h | h | N | N | (c) |
+// | h | hd | HD | HD | (b) |
+// | hd | d | WS | SS | (d) |
+// | hd | g | SS | -- |(d/a)|
+// | hd | h | SS | WS | (d) |
+// | hd | hd | HD | HD | (b) |
Sema::CUDAFunctionPreference
Sema::IdentifyCUDAPreference(const FunctionDecl *Caller,
@@ -112,39 +112,38 @@ Sema::IdentifyCUDAPreference(const Funct
(CallerTarget == CFT_HostDevice && getLangOpts().CUDAIsDevice)))
return CFP_Never;
- // (b) Best case scenarios
+ // (b) Calling HostDevice is OK for everyone.
+ if (CalleeTarget == CFT_HostDevice)
+ return CFP_HostDevice;
+
+ // (c) Best case scenarios
if (CalleeTarget == CallerTarget ||
(CallerTarget == CFT_Host && CalleeTarget == CFT_Global) ||
(CallerTarget == CFT_Global && CalleeTarget == CFT_Device))
- return CFP_Best;
-
- // (c) Calling HostDevice is OK as a fallback that works for everyone.
- if (CalleeTarget == CFT_HostDevice)
- return CFP_Fallback;
-
- // Figure out what should be returned 'last resort' cases. Normally
- // those would not be allowed, but we'll consider them if
- // CUDADisableTargetCallChecks is true.
- CUDAFunctionPreference QuestionableResult =
- getLangOpts().CUDADisableTargetCallChecks ? CFP_LastResort : CFP_Never;
+ return CFP_Native;
// (d) HostDevice behavior depends on compilation mode.
if (CallerTarget == CFT_HostDevice) {
- // Calling a function that matches compilation mode is OK.
- // Calling a function from the other side is frowned upon.
- if (getLangOpts().CUDAIsDevice)
- return CalleeTarget == CFT_Device ? CFP_Fallback : QuestionableResult;
- else
- return (CalleeTarget == CFT_Host || CalleeTarget == CFT_Global)
- ? CFP_Fallback
- : QuestionableResult;
+ // It's OK to call a compilation-mode matching function from an HD one.
+ if ((getLangOpts().CUDAIsDevice && CalleeTarget == CFT_Device) ||
+ (!getLangOpts().CUDAIsDevice &&
+ (CalleeTarget == CFT_Host || CalleeTarget == CFT_Global)))
+ return CFP_SameSide;
+
+ // We'll allow calls to non-mode-matching functions if target call
+ // checks are disabled. This is needed to avoid complaining about
+ // HD->H calls when we compile for device side and vice versa.
+ if (getLangOpts().CUDADisableTargetCallChecks)
+ return CFP_WrongSide;
+
+ return CFP_Never;
}
// (e) Calling across device/host boundary is not something you should do.
if ((CallerTarget == CFT_Host && CalleeTarget == CFT_Device) ||
(CallerTarget == CFT_Device && CalleeTarget == CFT_Host) ||
(CallerTarget == CFT_Global && CalleeTarget == CFT_Host))
- return QuestionableResult;
+ return CFP_Never;
llvm_unreachable("All cases should've been handled by now.");
}
Modified: cfe/trunk/lib/Sema/SemaOverload.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaOverload.cpp?rev=260697&r1=260696&r2=260697&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaOverload.cpp (original)
+++ cfe/trunk/lib/Sema/SemaOverload.cpp Fri Feb 12 12:29:18 2016
@@ -8722,14 +8722,44 @@ OverloadingResult
OverloadCandidateSet::BestViableFunction(Sema &S, SourceLocation Loc,
iterator &Best,
bool UserDefinedConversion) {
+ llvm::SmallVector<OverloadCandidate *, 16> Candidates;
+ std::transform(begin(), end(), std::back_inserter(Candidates),
+ [](OverloadCandidate &Cand) { return &Cand; });
+
+ // [CUDA] HD->H or HD->D calls are technically not allowed by CUDA
+ // but accepted by both clang and NVCC. However during a particular
+ // compilation mode only one call variant is viable. We need to
+ // exclude non-viable overload candidates from consideration based
+ // only on their host/device attributes. Specifically, if one
+ // candidate call is WrongSide and the other is SameSide, we ignore
+ // the WrongSide candidate.
+ if (S.getLangOpts().CUDA && S.getLangOpts().CUDATargetOverloads) {
+ const FunctionDecl *Caller = dyn_cast<FunctionDecl>(S.CurContext);
+ bool ContainsSameSideCandidate =
+ llvm::any_of(Candidates, [&](OverloadCandidate *Cand) {
+ return Cand->Function &&
+ S.IdentifyCUDAPreference(Caller, Cand->Function) ==
+ Sema::CFP_SameSide;
+ });
+ if (ContainsSameSideCandidate) {
+ auto IsWrongSideCandidate = [&](OverloadCandidate *Cand) {
+ return Cand->Function &&
+ S.IdentifyCUDAPreference(Caller, Cand->Function) ==
+ Sema::CFP_WrongSide;
+ };
+ Candidates.erase(std::remove_if(Candidates.begin(), Candidates.end(),
+ IsWrongSideCandidate),
+ Candidates.end());
+ }
+ }
+
// Find the best viable function.
Best = end();
- for (iterator Cand = begin(); Cand != end(); ++Cand) {
+ for (auto *Cand : Candidates)
if (Cand->Viable)
if (Best == end() || isBetterOverloadCandidate(S, *Cand, *Best, Loc,
UserDefinedConversion))
Best = Cand;
- }
// If we didn't find any viable functions, abort.
if (Best == end())
@@ -8739,7 +8769,7 @@ OverloadCandidateSet::BestViableFunction
// Make sure that this function is better than every other viable
// function. If not, we have an ambiguity.
- for (iterator Cand = begin(); Cand != end(); ++Cand) {
+ for (auto *Cand : Candidates) {
if (Cand->Viable &&
Cand != Best &&
!isBetterOverloadCandidate(S, *Best, *Cand, Loc,
Modified: cfe/trunk/test/CodeGenCUDA/function-overload.cu
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCUDA/function-overload.cu?rev=260697&r1=260696&r2=260697&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCUDA/function-overload.cu (original)
+++ cfe/trunk/test/CodeGenCUDA/function-overload.cu Fri Feb 12 12:29:18 2016
@@ -7,7 +7,8 @@
// RUN: | FileCheck -check-prefix=CHECK-BOTH -check-prefix=CHECK-HOST %s
// RUN: %clang_cc1 -triple nvptx64-nvidia-cuda -fcuda-is-device \
// RUN: -fcuda-target-overloads -emit-llvm -o - %s \
-// RUN: | FileCheck -check-prefix=CHECK-BOTH -check-prefix=CHECK-DEVICE %s
+// RUN: | FileCheck -check-prefix=CHECK-BOTH -check-prefix=CHECK-DEVICE \
+// RUN: -check-prefix=CHECK-DEVICE-STRICT %s
// Check target overloads handling with disabled call target checks.
// RUN: %clang_cc1 -DNOCHECKS -triple x86_64-unknown-linux-gnu -emit-llvm \
@@ -77,12 +78,112 @@ extern "C" __host__ int ch(void) {return
extern "C" __host__ __device__ int chd(void) {return 14;}
// CHECK-BOTH: ret i32 14
+// HD functions are sometimes allowed to call H or D functions -- this
+// is an artifact of the source-to-source splitting performed by nvcc
+// that we need to mimic. During device mode compilation in nvcc, host
+// functions aren't present at all, so don't participate in
+// overloading. But in clang, H and D functions are present in both
+// compilation modes. Clang normally uses the target attribute as a
+// tiebreaker between overloads with otherwise identical priority, but
+// in order to match nvcc's behavior, we sometimes need to wholly
+// discard overloads that would not be present during compilation
+// under nvcc.
+
+template <typename T> T template_vs_function(T arg) { return 15; }
+__device__ float template_vs_function(float arg) { return 16; }
+
+// Here we expect to call the templated function during host
+// compilation, even if -fcuda-disable-target-call-checks is passed,
+// and even though C++ overload rules prefer the non-templated
+// function.
+// CHECK-BOTH-LABEL: define void @_Z5hd_tfv()
+__host__ __device__ void hd_tf(void) {
+ template_vs_function(1.0f);
+ // CHECK-HOST: call float @_Z20template_vs_functionIfET_S0_(float
+ // CHECK-DEVICE: call float @_Z20template_vs_functionf(float
+ template_vs_function(2.0);
+ // CHECK-HOST: call double @_Z20template_vs_functionIdET_S0_(double
+ // CHECK-DEVICE: call float @_Z20template_vs_functionf(float
+}
+
+// Calls from __host__ and __device__ functions should always call the
+// overloaded function that matches their mode.
+// CHECK-HOST-LABEL: define void @_Z4h_tfv()
+__host__ void h_tf() {
+ template_vs_function(1.0f);
+ // CHECK-HOST: call float @_Z20template_vs_functionIfET_S0_(float
+ template_vs_function(2.0);
+ // CHECK-HOST: call double @_Z20template_vs_functionIdET_S0_(double
+}
+
+// CHECK-DEVICE-LABEL: define void @_Z4d_tfv()
+__device__ void d_tf() {
+ template_vs_function(1.0f);
+ // CHECK-DEVICE: call float @_Z20template_vs_functionf(float
+ template_vs_function(2.0);
+ // CHECK-DEVICE: call float @_Z20template_vs_functionf(float
+}
+
+// In case we have a mix of HD and H-only or D-only candidates in the
+// overload set, normal C++ overload resolution rules apply first.
+template <typename T> T template_vs_hd_function(T arg) { return 15; }
+__host__ __device__ float template_vs_hd_function(float arg) { return 16; }
+
+// CHECK-BOTH-LABEL: define void @_Z7hd_thdfv()
+__host__ __device__ void hd_thdf() {
+ template_vs_hd_function(1.0f);
+ // CHECK-HOST: call float @_Z23template_vs_hd_functionf(float
+ // CHECK-DEVICE: call float @_Z23template_vs_hd_functionf(float
+ template_vs_hd_function(1);
+ // CHECK-HOST: call i32 @_Z23template_vs_hd_functionIiET_S0_(i32
+ // CHECK-DEVICE-STRICT: call float @_Z23template_vs_hd_functionf(float
+ // CHECK-DEVICE-NC: call i32 @_Z23template_vs_hd_functionIiET_S0_(i32
+}
+
+// CHECK-HOST-LABEL: define void @_Z6h_thdfv()
+__host__ void h_thdf() {
+ template_vs_hd_function(1.0f);
+ // CHECK-HOST: call float @_Z23template_vs_hd_functionf(float
+ template_vs_hd_function(1);
+ // CHECK-HOST: call i32 @_Z23template_vs_hd_functionIiET_S0_(i32
+}
+
+// CHECK-DEVICE-LABEL: define void @_Z6d_thdfv()
+__device__ void d_thdf() {
+ template_vs_hd_function(1.0f);
+ // CHECK-DEVICE: call float @_Z23template_vs_hd_functionf(float
+ template_vs_hd_function(1);
+ // Host-only function template is not callable with strict call checks,
+ // so for device side HD function will be the only choice.
+ // CHECK-DEVICE: call float @_Z23template_vs_hd_functionf(float
+}
+
+// Check that overloads still work the same way on both host and
+// device side when the overload set contains only functions from one
+// side of compilation.
+__device__ float device_only_function(int arg) { return 17; }
+__device__ float device_only_function(float arg) { return 18; }
+
+__host__ float host_only_function(int arg) { return 19; }
+__host__ float host_only_function(float arg) { return 20; }
+
+// CHECK-BOTH-LABEL: define void @_Z6hd_dofv()
+__host__ __device__ void hd_dof() {
+#ifdef NOCHECKS
+ device_only_function(1.0f);
+ // CHECK-BOTH-NC: call float @_Z20device_only_functionf(float
+ device_only_function(1);
+ // CHECK-BOTH-NC: call float @_Z20device_only_functioni(i32
+ host_only_function(1.0f);
+ // CHECK-BOTH-NC: call float @_Z18host_only_functionf(float
+ host_only_function(1);
+ // CHECK-BOTH-NC: call float @_Z18host_only_functioni(i32
+#endif
+}
+
+
// CHECK-HOST-LABEL: define void @_Z5hostfv()
__host__ void hostf(void) {
-#if defined (NOCHECKS)
- fp_t dp = d; // CHECK-HOST-NC: store {{.*}} @_Z1dv, {{.*}} %dp,
- fp_t cdp = cd; // CHECK-HOST-NC: store {{.*}} @cd, {{.*}} %cdp,
-#endif
fp_t hp = h; // CHECK-HOST: store {{.*}} @_Z1hv, {{.*}} %hp,
fp_t chp = ch; // CHECK-HOST: store {{.*}} @ch, {{.*}} %chp,
fp_t dhp = dh; // CHECK-HOST: store {{.*}} @_Z2dhv, {{.*}} %dhp,
@@ -91,10 +192,6 @@ __host__ void hostf(void) {
fp_t chdp = chd; // CHECK-HOST: store {{.*}} @chd, {{.*}} %chdp,
gp_t gp = g; // CHECK-HOST: store {{.*}} @_Z1gv, {{.*}} %gp,
-#if defined (NOCHECKS)
- d(); // CHECK-HOST-NC: call i32 @_Z1dv()
- cd(); // CHECK-HOST-NC: call i32 @cd()
-#endif
h(); // CHECK-HOST: call i32 @_Z1hv()
ch(); // CHECK-HOST: call i32 @ch()
dh(); // CHECK-HOST: call i32 @_Z2dhv()
@@ -106,10 +203,6 @@ __host__ void hostf(void) {
__device__ void devicef(void) {
fp_t dp = d; // CHECK-DEVICE: store {{.*}} @_Z1dv, {{.*}} %dp,
fp_t cdp = cd; // CHECK-DEVICE: store {{.*}} @cd, {{.*}} %cdp,
-#if defined (NOCHECKS)
- fp_t hp = h; // CHECK-DEVICE-NC: store {{.*}} @_Z1hv, {{.*}} %hp,
- fp_t chp = ch; // CHECK-DEVICE-NC: store {{.*}} @ch, {{.*}} %chp,
-#endif
fp_t dhp = dh; // CHECK-DEVICE: store {{.*}} @_Z2dhv, {{.*}} %dhp,
fp_t cdhp = cdh; // CHECK-DEVICE: store {{.*}} @cdh, {{.*}} %cdhp,
fp_t hdp = hd; // CHECK-DEVICE: store {{.*}} @_Z2hdv, {{.*}} %hdp,
@@ -117,10 +210,6 @@ __device__ void devicef(void) {
d(); // CHECK-DEVICE: call i32 @_Z1dv()
cd(); // CHECK-DEVICE: call i32 @cd()
-#if defined (NOCHECKS)
- h(); // CHECK-DEVICE-NC: call i32 @_Z1hv()
- ch(); // CHECK-DEVICE-NC: call i32 @ch()
-#endif
dh(); // CHECK-DEVICE: call i32 @_Z2dhv()
cdh(); // CHECK-DEVICE: call i32 @cdh()
}
Modified: cfe/trunk/test/SemaCUDA/function-overload.cu
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCUDA/function-overload.cu?rev=260697&r1=260696&r2=260697&view=diff
==============================================================================
--- cfe/trunk/test/SemaCUDA/function-overload.cu (original)
+++ cfe/trunk/test/SemaCUDA/function-overload.cu Fri Feb 12 12:29:18 2016
@@ -70,13 +70,11 @@ extern "C" __host__ int ch(void) {return
__host__ void hostf(void) {
fp_t dp = d;
- fp_t cdp = cd;
-#if !defined(NOCHECKS)
- // expected-error at -3 {{reference to __device__ function 'd' in __host__ function}}
+ // expected-error at -1 {{reference to __device__ function 'd' in __host__ function}}
// expected-note at 65 {{'d' declared here}}
- // expected-error at -4 {{reference to __device__ function 'cd' in __host__ function}}
+ fp_t cdp = cd;
+ // expected-error at -1 {{reference to __device__ function 'cd' in __host__ function}}
// expected-note at 68 {{'cd' declared here}}
-#endif
fp_t hp = h;
fp_t chp = ch;
fp_t dhp = dh;
@@ -84,13 +82,11 @@ __host__ void hostf(void) {
gp_t gp = g;
d();
- cd();
-#if !defined(NOCHECKS)
- // expected-error at -3 {{no matching function for call to 'd'}}
+ // expected-error at -1 {{no matching function for call to 'd'}}
// expected-note at 65 {{candidate function not viable: call to __device__ function from __host__ function}}
- // expected-error at -4 {{no matching function for call to 'cd'}}
+ cd();
+ // expected-error at -1 {{no matching function for call to 'cd'}}
// expected-note at 68 {{candidate function not viable: call to __device__ function from __host__ function}}
-#endif
h();
ch();
dh();
@@ -104,13 +100,11 @@ __device__ void devicef(void) {
fp_t dp = d;
fp_t cdp = cd;
fp_t hp = h;
- fp_t chp = ch;
-#if !defined(NOCHECKS)
- // expected-error at -3 {{reference to __host__ function 'h' in __device__ function}}
+ // expected-error at -1 {{reference to __host__ function 'h' in __device__ function}}
// expected-note at 66 {{'h' declared here}}
- // expected-error at -4 {{reference to __host__ function 'ch' in __device__ function}}
+ fp_t chp = ch;
+ // expected-error at -1 {{reference to __host__ function 'ch' in __device__ function}}
// expected-note at 69 {{'ch' declared here}}
-#endif
fp_t dhp = dh;
fp_t cdhp = cdh;
gp_t gp = g; // expected-error {{reference to __global__ function 'g' in __device__ function}}
@@ -118,14 +112,10 @@ __device__ void devicef(void) {
d();
cd();
- h();
- ch();
-#if !defined(NOCHECKS)
- // expected-error at -3 {{no matching function for call to 'h'}}
+ h(); // expected-error {{no matching function for call to 'h'}}
// expected-note at 66 {{candidate function not viable: call to __host__ function from __device__ function}}
- // expected-error at -4 {{no matching function for call to 'ch'}}
+ ch(); // expected-error {{no matching function for call to 'ch'}}
// expected-note at 69 {{candidate function not viable: call to __host__ function from __device__ function}}
-#endif
dh();
cdh();
g(); // expected-error {{no matching function for call to 'g'}}
@@ -138,28 +128,25 @@ __global__ void globalf(void) {
fp_t dp = d;
fp_t cdp = cd;
fp_t hp = h;
- fp_t chp = ch;
-#if !defined(NOCHECKS)
- // expected-error at -3 {{reference to __host__ function 'h' in __global__ function}}
+ // expected-error at -1 {{reference to __host__ function 'h' in __global__ function}}
// expected-note at 66 {{'h' declared here}}
- // expected-error at -4 {{reference to __host__ function 'ch' in __global__ function}}
+ fp_t chp = ch;
+ // expected-error at -1 {{reference to __host__ function 'ch' in __global__ function}}
// expected-note at 69 {{'ch' declared here}}
-#endif
fp_t dhp = dh;
fp_t cdhp = cdh;
- gp_t gp = g; // expected-error {{reference to __global__ function 'g' in __global__ function}}
- // expected-note at 67 {{'g' declared here}}
+ gp_t gp = g;
+ // expected-error at -1 {{reference to __global__ function 'g' in __global__ function}}
+ // expected-note at 67 {{'g' declared here}}
d();
cd();
h();
- ch();
-#if !defined(NOCHECKS)
- // expected-error at -3 {{no matching function for call to 'h'}}
+ // expected-error at -1 {{no matching function for call to 'h'}}
// expected-note at 66 {{candidate function not viable: call to __host__ function from __global__ function}}
- // expected-error at -4 {{no matching function for call to 'ch'}}
+ ch();
+ // expected-error at -1 {{no matching function for call to 'ch'}}
// expected-note at 69 {{candidate function not viable: call to __host__ function from __global__ function}}
-#endif
dh();
cdh();
g(); // expected-error {{no matching function for call to 'g'}}
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