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[OpenMP] Change __kmpc_free_shared to include the paired allocation size

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This patch changes `__kmpc_free_shared` to take an additional argument
corresponding to the associated allocation's size. This makes it easier to
implement the allocator in the runtime.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D106496
This commit is contained in:
Joseph Huber 2021-07-21 17:13:46 -04:00 committed by Huber, Joseph
parent 549c960a94
commit 472a223072
7 changed files with 21 additions and 18 deletions
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2
include/llvm/Analysis/TargetLibraryInfo.def
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@ -332,7 +332,7 @@ TLI_DEFINE_STRING_INTERNAL("__isoc99_sscanf")
/// void __kmpc_alloc_shared(size_t nbyte);
TLI_DEFINE_ENUM_INTERNAL(__kmpc_alloc_shared)
TLI_DEFINE_STRING_INTERNAL("__kmpc_alloc_shared")
/// void __kmpc_free_shared(void *ptr);
/// void __kmpc_free_shared(void *ptr, size_t nbyte);
TLI_DEFINE_ENUM_INTERNAL(__kmpc_free_shared)
TLI_DEFINE_STRING_INTERNAL("__kmpc_free_shared")
/// double __log10_finite(double x);

2
include/llvm/Frontend/OpenMP/OMPKinds.def
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@ -430,7 +430,7 @@ __OMP_RTL(__kmpc_nvptx_teams_reduce_nowait_v2, false, Int32, IdentPtr, Int32,
__OMP_RTL(__kmpc_shuffle_int64, false, Int64, Int64, Int16, Int16)
__OMP_RTL(__kmpc_alloc_shared, false, VoidPtr, SizeTy)
__OMP_RTL(__kmpc_free_shared, false, Void, VoidPtr)
__OMP_RTL(__kmpc_free_shared, false, Void, VoidPtr, SizeTy)
__OMP_RTL(__kmpc_begin_sharing_variables, false, Void, VoidPtrPtrPtr, SizeTy)
__OMP_RTL(__kmpc_end_sharing_variables, false, Void, )
__OMP_RTL(__kmpc_get_shared_variables, false, Void, VoidPtrPtrPtr)

4
lib/Analysis/MemoryBuiltins.cpp
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@ -434,7 +434,6 @@ const CallInst *llvm::extractCallocCall(const Value *I,
bool llvm::isLibFreeFunction(const Function *F, const LibFunc TLIFn) {
unsigned ExpectedNumParams;
if (TLIFn == LibFunc_free ||
TLIFn == LibFunc___kmpc_free_shared || // OpenMP Offloading RTL free
TLIFn == LibFunc_ZdlPv || // operator delete(void*)
TLIFn == LibFunc_ZdaPv || // operator delete[](void*)
TLIFn == LibFunc_msvc_delete_ptr32 || // operator delete(void*)
@ -457,7 +456,8 @@ bool llvm::isLibFreeFunction(const Function *F, const LibFunc TLIFn) {
TLIFn == LibFunc_msvc_delete_array_ptr32_int || // delete[](void*, uint)
TLIFn == LibFunc_msvc_delete_array_ptr64_longlong || // delete[](void*, ulonglong)
TLIFn == LibFunc_msvc_delete_array_ptr32_nothrow || // delete[](void*, nothrow)
TLIFn == LibFunc_msvc_delete_array_ptr64_nothrow) // delete[](void*, nothrow)
TLIFn == LibFunc_msvc_delete_array_ptr64_nothrow || // delete[](void*, nothrow)
TLIFn == LibFunc___kmpc_free_shared) // OpenMP Offloading RTL free
ExpectedNumParams = 2;
else if (TLIFn == LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t || // delete(void*, align_val_t, nothrow)
TLIFn == LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t || // delete[](void*, align_val_t, nothrow)

4
lib/Analysis/TargetLibraryInfo.cpp
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@ -1048,8 +1048,10 @@ bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
case LibFunc_mktime:
case LibFunc_times:
case LibFunc_vec_free:
case LibFunc___kmpc_free_shared:
return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
case LibFunc___kmpc_free_shared:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(1)));
case LibFunc_fopen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&

13
test/Transforms/OpenMP/remove_globalization.ll
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@ -24,6 +24,7 @@ define void @kernel() {
; CHECK-NEXT: call void @bar() #[[ATTR0]]
; CHECK-NEXT: call void @__kmpc_target_deinit(%struct.ident_t* nonnull null, i1 false, i1 true)
; CHECK-NEXT: ret void
;
entry:
%0 = call i32 @__kmpc_target_init(%struct.ident_t* nonnull null, i1 false, i1 true, i1 true)
call void @foo()
@ -42,7 +43,7 @@ define internal void @foo() {
entry:
%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !12
call void @use(i8* %0)
call void @__kmpc_free_shared(i8* %0)
call void @__kmpc_free_shared(i8* %0, i64 4)
ret void
}
@ -52,13 +53,13 @@ define internal void @bar() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i8* @__kmpc_alloc_shared(i64 noundef 4) #[[ATTR0]], !dbg [[DBG8:![0-9]+]]
; CHECK-NEXT: call void @share(i8* nofree writeonly [[TMP0]]) #[[ATTR3:[0-9]+]]
; CHECK-NEXT: call void @__kmpc_free_shared(i8* [[TMP0]]) #[[ATTR0]]
; CHECK-NEXT: call void @__kmpc_free_shared(i8* [[TMP0]], i64 noundef 4) #[[ATTR0]]
; CHECK-NEXT: ret void
;
entry:
%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !13
call void @share(i8* %0)
call void @__kmpc_free_shared(i8* %0)
call void @__kmpc_free_shared(i8* %0, i64 4)
ret void
}
@ -94,15 +95,15 @@ define void @unused() {
entry:
%0 = call i8* @__kmpc_alloc_shared(i64 4), !dbg !14
call void @use(i8* %0)
call void @__kmpc_free_shared(i8* %0)
call void @__kmpc_free_shared(i8* %0, i64 4)
ret void
}
; CHECK: declare i8* @__kmpc_alloc_shared(i64)
declare i8* @__kmpc_alloc_shared(i64)
; CHECK: declare void @__kmpc_free_shared(i8* nocapture)
declare void @__kmpc_free_shared(i8*)
; CHECK: declare void @__kmpc_free_shared(i8* nocapture, i64)
declare void @__kmpc_free_shared(i8*, i64)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !6, !7}

12
test/Transforms/OpenMP/replace_globalization.ll
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@ -25,7 +25,7 @@ entry:
%x_on_stack = bitcast i8* %x to i32*
%0 = bitcast i32* %x_on_stack to i8*
call void @use(i8* %0)
call void @__kmpc_free_shared(i8* %x)
call void @__kmpc_free_shared(i8* %x, i64 4)
call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
ret void
}
@ -50,7 +50,7 @@ master:
%x_on_stack = bitcast i8* %x to [4 x i32]*
%0 = bitcast [4 x i32]* %x_on_stack to i8*
call void @use(i8* %0)
call void @__kmpc_free_shared(i8* %x)
call void @__kmpc_free_shared(i8* %x, i64 16)
br label %exit
exit:
ret void
@ -67,7 +67,7 @@ master:
%y_on_stack = bitcast i8* %y to [4 x i32]*
%1 = bitcast [4 x i32]* %y_on_stack to i8*
call void @use(i8* %1)
call void @__kmpc_free_shared(i8* %y)
call void @__kmpc_free_shared(i8* %y, i64 4)
br label %exit
exit:
ret void
@ -79,11 +79,11 @@ entry:
%0 = icmp eq i32 %call, -1
br i1 %0, label %master, label %exit
master:
%y = call i8* @__kmpc_alloc_shared(i64 6), !dbg !12
%y = call i8* @__kmpc_alloc_shared(i64 24), !dbg !12
%y_on_stack = bitcast i8* %y to [6 x i32]*
%1 = bitcast [6 x i32]* %y_on_stack to i8*
call void @use(i8* %1)
call void @__kmpc_free_shared(i8* %y)
call void @__kmpc_free_shared(i8* %y, i64 24)
br label %exit
exit:
ret void
@ -98,7 +98,7 @@ entry:
declare i8* @__kmpc_alloc_shared(i64)
declare void @__kmpc_free_shared(i8*)
declare void @__kmpc_free_shared(i8*, i64)
declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()

2
unittests/Analysis/TargetLibraryInfoTest.cpp
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@ -589,7 +589,7 @@ TEST_F(TargetLibraryInfoTest, ValidProto) {
// These functions are OpenMP Offloading allocation / free routines
"declare i8* @__kmpc_alloc_shared(i64)\n"
"declare void @__kmpc_free_shared(i8*)\n"
"declare void @__kmpc_free_shared(i8*, i64)\n"
);
for (unsigned FI = 0; FI != LibFunc::NumLibFuncs; ++FI) {