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[OpenMP] Fix stack corruption due to argument mismatch (llvm#96386)
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While lowering (#pragma omp target update from), clang's generated
.omp_task_entry. is setting up 9 arguments while calling
__tgt_target_data_update_nowait_mapper.

At the same time, in __tgt_target_data_update_nowait_mapper, call to
targetData<TaskAsyncInfoWrapperTy>() is converted to a sibcall assuming
it has the argument count listed in the signature.

AARCH64 asm sequence for this is as follows (removed unrelated insns):

`
.omp_task_entry..108:
  sub   sp, sp, #32
  stp   x29, x30, sp, #16       // 16-byte Folded Spill
  add   x29, sp, #16
  str   x8, sp, #8. // stack canary
  str   xzr, [sp]
  bl   __tgt_target_data_update_nowait_mapper

__tgt_target_data_update_nowait_mapper:
  sub   sp, sp, #32
  stp   x29, x30, sp, #16       // 16-byte Folded Spill
  add   x29, sp, #16
  str   x8, sp, #8 // stack canary
  // Sibcall argument setup
adrp x8,
:got:_Z16targetDataUpdateP7ident_tR8DeviceTyiPPvS4_PlS5_S4_S4_R11AsyncInfoTyb
ldr x8, [x8,
:got_lo12:_Z16targetDataUpdateP7ident_tR8DeviceTyiPPvS4_PlS5_S4_S4_R11AsyncInfoTyb]
  stp   x9, x8, x29, #16
  adrp  x8, .L.str.8
  add   x8, x8, :lo12:.L.str.8
  str   x8, x29, #32. <==. This is the insn that erases $fp

  ldp   x29, x30, sp, #16       // 16-byte Folded Reload
  add   sp, sp, #32
  // Sibcall
b
ZL10targetDataI22TaskAsyncInfoWrapperTyEvP7ident_tliPPvS4_PlS5_S4_S4_PFiS2_R8DeviceTyiS4_S4_S5_S5_S4_S4_R11AsyncInfoTybEPKcSD
`

On AArch64, call to __tgt_target_data_update_nowait_mapper in
.omp_task_entry. sets up only single space on stack and this results in
ovewriting $fp and subsequent stack corruption. This issue can be
credited to discrepancy of __tgt_target_data_update_nowait_mapper
signature in openmp/libomptarget/include/omptarget.h taking 13 arguments
while clang/lib/CodeGen/CGOpenMPRuntime.cpp and
llvm/include/llvm/Frontend/OpenMP/OMPKinds.def taking only 9 arguments.

This patch modifies __tgt_target_data_update_nowait_mapper signature to
match .omp_task_entry usage(and other 2 files mentioned above).

Co-authored-by: Kugan Vivekanandarajah <kvivekananda@nvidia.com>
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@sushgokh
sushgokh and Kugan Vivekanandarajah authored Jul 5, 2024
1 parent db782b4 commit c7ee204
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Showing 7 changed files with 50 additions and 39 deletions.
23 changes: 13 additions & 10 deletions clang/lib/CodeGen/CGOpenMPRuntime.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SetOperations.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/IR/Constants.h"
Expand Down Expand Up @@ -10357,16 +10358,12 @@ void CGOpenMPRuntime::emitTargetDataStandAloneCall(
// Source location for the ident struct
llvm::Value *RTLoc = emitUpdateLocation(CGF, D.getBeginLoc());

llvm::Value *OffloadingArgs[] = {
RTLoc,
DeviceID,
PointerNum,
InputInfo.BasePointersArray.emitRawPointer(CGF),
InputInfo.PointersArray.emitRawPointer(CGF),
InputInfo.SizesArray.emitRawPointer(CGF),
MapTypesArray,
MapNamesArray,
InputInfo.MappersArray.emitRawPointer(CGF)};
SmallVector<llvm::Value *, 13> OffloadingArgs(
{RTLoc, DeviceID, PointerNum,
InputInfo.BasePointersArray.emitRawPointer(CGF),
InputInfo.PointersArray.emitRawPointer(CGF),
InputInfo.SizesArray.emitRawPointer(CGF), MapTypesArray, MapNamesArray,
InputInfo.MappersArray.emitRawPointer(CGF)});

// Select the right runtime function call for each standalone
// directive.
Expand Down Expand Up @@ -10455,6 +10452,12 @@ void CGOpenMPRuntime::emitTargetDataStandAloneCall(
llvm_unreachable("Unexpected standalone target data directive.");
break;
}
if (HasNowait) {
OffloadingArgs.push_back(llvm::Constant::getNullValue(CGF.Int32Ty));
OffloadingArgs.push_back(llvm::Constant::getNullValue(CGF.VoidPtrTy));
OffloadingArgs.push_back(llvm::Constant::getNullValue(CGF.Int32Ty));
OffloadingArgs.push_back(llvm::Constant::getNullValue(CGF.VoidPtrTy));
}
CGF.EmitRuntimeCall(
OMPBuilder.getOrCreateRuntimeFunction(CGM.getModule(), RTLFn),
OffloadingArgs);
Expand Down
6 changes: 3 additions & 3 deletions clang/test/OpenMP/declare_mapper_codegen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -514,7 +514,7 @@ void foo(int a){
// CK0: }

// CK0: define internal void [[OMP_OUTLINED_16:@.+]](i32{{.*}} %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}
// CK0-DAG: call void @__tgt_target_data_begin_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[EDNWTYPES]], ptr null, ptr [[MPR:%.+]])
// CK0-DAG: call void @__tgt_target_data_begin_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[EDNWTYPES]], ptr null, ptr [[MPR:%.+]], i32 0, ptr null, i32 0, ptr null)
// CK0-DAG: [[BP]] = getelementptr inbounds [1 x ptr], ptr [[BPADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[P]] = getelementptr inbounds [1 x ptr], ptr [[PADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[SZ]] = getelementptr inbounds [1 x i64], ptr [[SZADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
Expand All @@ -533,7 +533,7 @@ void foo(int a){
// CK0: }

// CK0: define internal void [[OMP_OUTLINED_23:@.+]](i32{{.*}} %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}
// CK0-DAG: call void @__tgt_target_data_end_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[EXDNWTYPES]], ptr null, ptr [[MPR:%.+]])
// CK0-DAG: call void @__tgt_target_data_end_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[EXDNWTYPES]], ptr null, ptr [[MPR:%.+]], i32 0, ptr null, i32 0, ptr null)
// CK0-DAG: [[BP]] = getelementptr inbounds [1 x ptr], ptr [[BPADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[P]] = getelementptr inbounds [1 x ptr], ptr [[PADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[SZ]] = getelementptr inbounds [1 x i64], ptr [[SZADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
Expand All @@ -551,7 +551,7 @@ void foo(int a){
// CK0: }

// CK0: define internal void [[OMP_OUTLINED_32:@.+]](i32{{.*}} %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}, ptr noalias noundef %{{[^,]+}}
// CK0-DAG: call void @__tgt_target_data_update_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[FNWTYPES]], ptr null, ptr [[MPR:%.+]])
// CK0-DAG: call void @__tgt_target_data_update_nowait_mapper(ptr @{{.+}}, i64 -1, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[FNWTYPES]], ptr null, ptr [[MPR:%.+]], i32 0, ptr null, i32 0, ptr null)
// CK0-DAG: [[BP]] = getelementptr inbounds [1 x ptr], ptr [[BPADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[P]] = getelementptr inbounds [1 x ptr], ptr [[PADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
// CK0-DAG: [[SZ]] = getelementptr inbounds [1 x i64], ptr [[SZADDR:%[^,]+]], i[[sz]] 0, i[[sz]] 0
Expand Down
2 changes: 1 addition & 1 deletion clang/test/OpenMP/target_enter_data_codegen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,7 @@ void foo(int arg) {


// CK1: define internal {{.*}}i32 [[OMP_TASK_ENTRY]](i32 {{.*}}%0, ptr noalias noundef %1)
// CK1-DAG: call void @__tgt_target_data_begin_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BPADDR:%[^,]+]], ptr [[PADDR:%[^,]+]], ptr [[SZADDR:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null)
// CK1-DAG: call void @__tgt_target_data_begin_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BPADDR:%[^,]+]], ptr [[PADDR:%[^,]+]], ptr [[SZADDR:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null, i32 0, ptr null, i32 0, ptr null)
// CK1-DAG: [[BPADDR]] = load ptr, ptr [[FPBP:%[^,]+]], align
// CK1-DAG: [[PADDR]] = load ptr, ptr [[FPP:%[^,]+]], align
// CK1-DAG: [[SZADDR]] = load ptr, ptr [[FPSZ:%[^,]+]], align
Expand Down
2 changes: 1 addition & 1 deletion clang/test/OpenMP/target_exit_data_codegen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -206,7 +206,7 @@ void foo(int arg) {
}

// CK1: define internal {{.*}}i32 [[OMP_TASK_ENTRY]](i32 {{.*}}%{{[^,]+}}, ptr noalias noundef %{{[^,]+}})
// CK1-DAG: call void @__tgt_target_data_end_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null)
// CK1-DAG: call void @__tgt_target_data_end_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null, i32 0, ptr null, i32 0, ptr null)
// CK1-DAG: [[BP]] = load ptr, ptr [[FPBPADDR:%[^,]+]], align
// CK1-DAG: [[P]] = load ptr, ptr [[FPPADDR:%[^,]+]], align
// CK1-DAG: [[SZ]] = load ptr, ptr [[FPSZADDR:%[^,]+]], align
Expand Down
2 changes: 1 addition & 1 deletion clang/test/OpenMP/target_update_codegen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -151,7 +151,7 @@ void foo(int arg) {
}

// CK1: define internal {{.*}}i32 [[OMP_TASK_ENTRY]](i32 {{.*}}%{{[^,]+}}, ptr noalias noundef %{{[^,]+}})
// CK1-DAG: call void @__tgt_target_data_update_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null)
// CK1-DAG: call void @__tgt_target_data_update_nowait_mapper(ptr @{{.+}}, i64 %{{[^,]+}}, i32 1, ptr [[BP:%[^,]+]], ptr [[P:%[^,]+]], ptr [[SZ:%[^,]+]], ptr [[MTYPE00]], ptr null, ptr null, i32 0, ptr null, i32 0, ptr null)
// CK1-DAG: [[BP]] = load ptr, ptr [[FPBPADDR:%[^,]+]], align
// CK1-DAG: [[P]] = load ptr, ptr [[FPPADDR:%[^,]+]], align
// CK1-DAG: [[SZ]] = load ptr, ptr [[FPSZADDR:%[^,]+]], align
Expand Down
30 changes: 19 additions & 11 deletions llvm/include/llvm/Frontend/OpenMP/OMPKinds.def
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Original file line number Diff line number Diff line change
Expand Up @@ -439,19 +439,22 @@ __OMP_RTL(__tgt_target_kernel_nowait, false, Int32, IdentPtr, Int64, Int32,
Int32, VoidPtr, KernelArgsPtr, Int32, VoidPtr, Int32, VoidPtr)
__OMP_RTL(__tgt_target_data_begin_mapper, false, Void, IdentPtr, Int64, Int32, VoidPtrPtr,
VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_begin_nowait_mapper, false, Void, IdentPtr, Int64, Int32,
VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_begin_nowait_mapper, false, Void, IdentPtr, Int64,
Int32, VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr,
VoidPtrPtr, Int32, VoidPtr, Int32, VoidPtr)
__OMP_RTL(__tgt_target_data_begin_mapper_issue, false, Void, IdentPtr, Int64, Int32,
VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr, AsyncInfoPtr)
__OMP_RTL(__tgt_target_data_begin_mapper_wait, false, Void, Int64, AsyncInfoPtr)
__OMP_RTL(__tgt_target_data_end_mapper, false, Void, IdentPtr, Int64, Int32, VoidPtrPtr,
VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_end_nowait_mapper, false, Void, IdentPtr, Int64, Int32,
VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_end_nowait_mapper, false, Void, IdentPtr, Int64,
Int32, VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr,
VoidPtrPtr, Int32, VoidPtr, Int32, VoidPtr)
__OMP_RTL(__tgt_target_data_update_mapper, false, Void, IdentPtr, Int64, Int32,
VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_update_nowait_mapper, false, Void, IdentPtr, Int64, Int32,
VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr, VoidPtrPtr)
__OMP_RTL(__tgt_target_data_update_nowait_mapper, false, Void, IdentPtr, Int64,
Int32, VoidPtrPtr, VoidPtrPtr, Int64Ptr, Int64Ptr, VoidPtrPtr,
VoidPtrPtr, Int32, VoidPtr, Int32, VoidPtr)
__OMP_RTL(__tgt_mapper_num_components, false, Int64, VoidPtr)
__OMP_RTL(__tgt_push_mapper_component, false, Void, VoidPtr, VoidPtr, VoidPtr,
Int64, Int64, VoidPtr)
Expand Down Expand Up @@ -1029,10 +1032,12 @@ __OMP_RTL_ATTRS(__tgt_target_kernel_nowait, ForkAttrs, SExt,
SExt))
__OMP_RTL_ATTRS(__tgt_target_data_begin_mapper, ForkAttrs, AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt))
__OMP_RTL_ATTRS(__tgt_target_data_begin_nowait_mapper, ForkAttrs, AttributeSet(),
__OMP_RTL_ATTRS(__tgt_target_data_begin_nowait_mapper, ForkAttrs,
AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt, AttributeSet(),
AttributeSet(), AttributeSet(), AttributeSet(),
AttributeSet(), AttributeSet()))
AttributeSet(), AttributeSet(), SExt, AttributeSet(),
SExt, AttributeSet()))
__OMP_RTL_ATTRS(__tgt_target_data_begin_mapper_issue, AttributeSet(),
AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt))
Expand All @@ -1041,13 +1046,16 @@ __OMP_RTL_ATTRS(__tgt_target_data_end_mapper, ForkAttrs, AttributeSet(),
__OMP_RTL_ATTRS(__tgt_target_data_end_nowait_mapper, ForkAttrs, AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt, AttributeSet(),
AttributeSet(), AttributeSet(), AttributeSet(),
AttributeSet(), AttributeSet()))
AttributeSet(), AttributeSet(), SExt, AttributeSet(),
SExt, AttributeSet()))
__OMP_RTL_ATTRS(__tgt_target_data_update_mapper, ForkAttrs, AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt))
__OMP_RTL_ATTRS(__tgt_target_data_update_nowait_mapper, ForkAttrs, AttributeSet(),
__OMP_RTL_ATTRS(__tgt_target_data_update_nowait_mapper, ForkAttrs,
AttributeSet(),
ParamAttrs(AttributeSet(), AttributeSet(), SExt, AttributeSet(),
AttributeSet(), AttributeSet(), AttributeSet(),
AttributeSet(), AttributeSet()))
AttributeSet(), AttributeSet(), SExt, AttributeSet(),
SExt, AttributeSet()))
__OMP_RTL_ATTRS(__tgt_mapper_num_components, ForkAttrs, AttributeSet(),
ParamAttrs())
__OMP_RTL_ATTRS(__tgt_push_mapper_component, ForkAttrs, AttributeSet(),
Expand Down
24 changes: 12 additions & 12 deletions llvm/test/Transforms/OpenMP/add_attributes.ll
View file
Original file line number Diff line number Diff line change
Expand Up @@ -643,15 +643,15 @@ declare i32 @__tgt_target_teams_nowait_mapper(ptr, i64, ptr, i32, ptr, ptr, ptr,

declare void @__tgt_target_data_begin_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

declare void @__tgt_target_data_end_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

declare void @__tgt_target_data_update_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

declare i64 @__tgt_mapper_num_components(ptr)

Expand Down Expand Up @@ -1250,19 +1250,19 @@ declare i32 @__tgt_target_kernel_nowait(ptr, i64, i32, i32, ptr, ptr, i32, ptr,
; CHECK-NEXT: declare void @__tgt_target_data_begin_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; CHECK-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare void @__tgt_target_data_end_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; CHECK-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare void @__tgt_target_data_update_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; CHECK-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; CHECK: ; Function Attrs: nounwind
; CHECK-NEXT: declare i64 @__tgt_mapper_num_components(ptr)
Expand Down Expand Up @@ -1892,19 +1892,19 @@ declare i32 @__tgt_target_kernel_nowait(ptr, i64, i32, i32, ptr, ptr, i32, ptr,
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_begin_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_end_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_update_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr)
; OPTIMISTIC-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, i32, ptr)

; OPTIMISTIC: ; Function Attrs: nounwind
; OPTIMISTIC-NEXT: declare i64 @__tgt_mapper_num_components(ptr)
Expand Down Expand Up @@ -2547,19 +2547,19 @@ declare i32 @__tgt_target_kernel_nowait(ptr, i64, i32, i32, ptr, ptr, i32, ptr,
; EXT-NEXT: declare void @__tgt_target_data_begin_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)
; EXT-NEXT: declare void @__tgt_target_data_begin_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr, i32 signext, ptr, i32 signext, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare void @__tgt_target_data_end_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)
; EXT-NEXT: declare void @__tgt_target_data_end_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr, i32 signext, ptr, i32 signext, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare void @__tgt_target_data_update_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr)
; EXT-NEXT: declare void @__tgt_target_data_update_nowait_mapper(ptr, i64, i32 signext, ptr, ptr, ptr, ptr, ptr, ptr, i32 signext, ptr, i32 signext, ptr)

; EXT: ; Function Attrs: nounwind
; EXT-NEXT: declare i64 @__tgt_mapper_num_components(ptr)
Expand Down

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