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[polly-acc] change cl_get_* return types to 32/64bit

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Summary:
This patch changes the return types for ocl_get_* functions during SPIR code generation. Because these functions return size_t types, the return type needs to be changed to the actual size of size_t on the device.

Based on work by Michal Babej and Pekka Jääskeläinen

Patch by: Alain Denzler

Reviewers: grosser, philip.pfaffe, bollu

Reviewed By: grosser, philip.pfaffe

Subscribers: nemanjai, kbarton, llvm-commits

Differential Revision: https://reviews.llvm.org/D48774

llvm-svn: 336080
This commit is contained in:
Philip Pfaffe
2018-07-02 07:40:47 +00:00
parent 0325e304b9
commit d71493cb06
2 changed files with 107 additions and 9 deletions
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26
polly/lib/CodeGen/PPCGCodeGeneration.cpp
View File

@@ -578,8 +578,9 @@ private:
/// Insert function calls to retrieve the SPIR group/local ids.
///
/// @param The kernel to generate the function calls for.
void insertKernelCallsSPIR(ppcg_kernel *Kernel);
/// @param Kernel The kernel to generate the function calls for.
/// @param SizeTypeIs64Bit Whether size_t of the openCl device is 64bit.
void insertKernelCallsSPIR(ppcg_kernel *Kernel, bool SizeTypeIs64bit);
/// Setup the creation of functions referenced by the GPU kernel.
///
@@ -2097,7 +2098,8 @@ void GPUNodeBuilder::insertKernelIntrinsics(ppcg_kernel *Kernel) {
}
}
void GPUNodeBuilder::insertKernelCallsSPIR(ppcg_kernel *Kernel) {
void GPUNodeBuilder::insertKernelCallsSPIR(ppcg_kernel *Kernel,
bool SizeTypeIs64bit) {
const char *GroupName[3] = {"__gen_ocl_get_group_id0",
"__gen_ocl_get_group_id1",
"__gen_ocl_get_group_id2"};
@@ -2105,8 +2107,11 @@ void GPUNodeBuilder::insertKernelCallsSPIR(ppcg_kernel *Kernel) {
const char *LocalName[3] = {"__gen_ocl_get_local_id0",
"__gen_ocl_get_local_id1",
"__gen_ocl_get_local_id2"};
IntegerType *SizeT =
SizeTypeIs64bit ? Builder.getInt64Ty() : Builder.getInt32Ty();
auto createFunc = [this](const char *Name, __isl_take isl_id *Id) mutable {
auto createFunc = [this](const char *Name, __isl_take isl_id *Id,
IntegerType *SizeT) mutable {
Module *M = Builder.GetInsertBlock()->getParent()->getParent();
Function *FN = M->getFunction(Name);
@@ -2114,22 +2119,23 @@ void GPUNodeBuilder::insertKernelCallsSPIR(ppcg_kernel *Kernel) {
if (!FN) {
GlobalValue::LinkageTypes Linkage = Function::ExternalLinkage;
std::vector<Type *> Args;
FunctionType *Ty = FunctionType::get(Builder.getInt32Ty(), Args, false);
FunctionType *Ty = FunctionType::get(SizeT, Args, false);
FN = Function::Create(Ty, Linkage, Name, M);
FN->setCallingConv(CallingConv::SPIR_FUNC);
}
Value *Val = Builder.CreateCall(FN, {});
Val = Builder.CreateIntCast(Val, Builder.getInt64Ty(), false, Name);
if (SizeT == Builder.getInt32Ty())
Val = Builder.CreateIntCast(Val, Builder.getInt64Ty(), false, Name);
IDToValue[Id] = Val;
KernelIDs.insert(std::unique_ptr<isl_id, IslIdDeleter>(Id));
};
for (int i = 0; i < Kernel->n_grid; ++i)
createFunc(GroupName[i], isl_id_list_get_id(Kernel->block_ids, i));
createFunc(GroupName[i], isl_id_list_get_id(Kernel->block_ids, i), SizeT);
for (int i = 0; i < Kernel->n_block; ++i)
createFunc(LocalName[i], isl_id_list_get_id(Kernel->thread_ids, i));
createFunc(LocalName[i], isl_id_list_get_id(Kernel->thread_ids, i), SizeT);
}
void GPUNodeBuilder::prepareKernelArguments(ppcg_kernel *Kernel, Function *FN) {
@@ -2307,8 +2313,10 @@ void GPUNodeBuilder::createKernelFunction(
insertKernelIntrinsics(Kernel);
break;
case GPUArch::SPIR32:
insertKernelCallsSPIR(Kernel, false);
break;
case GPUArch::SPIR64:
insertKernelCallsSPIR(Kernel);
insertKernelCallsSPIR(Kernel, true);
break;
}
}

90
polly/test/GPGPU/spir-typesize.ll Normal file
View File

@@ -0,0 +1,90 @@
; RUN: opt %loadPolly -O3 -polly -polly-target=gpu \
; RUN: -polly-gpu-arch=spir64 \
; RUN: -polly-acc-dump-kernel-ir -polly-process-unprofitable -disable-output < %s | \
; RUN: FileCheck -check-prefix=I64 %s
; RUN: opt %loadPolly -O3 -polly -polly-target=gpu \
; RUN: -polly-gpu-arch=spir32 \
; RUN: -polly-acc-dump-kernel-ir -polly-process-unprofitable -disable-output < %s | \
; RUN: FileCheck -check-prefix=I32 %s
; REQUIRES pollyacc
; This test case checks whether the openCl runtime functions (get_local_id/get_group_id) return the right types for 32 and 64bit devices.
; I32: target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128-f32:32:32-f64:64:64-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024"
; I32-NEXT: target triple = "spir-unknown-unknown"
; I32-LABEL: define spir_kernel void @FUNC_double_parallel_loop_SCOP_0_KERNEL_0(i8 addrspace(1)* %MemRef_A) #0 !kernel_arg_addr_space !0 !kernel_arg_name !1 !kernel_arg_access_qual !1 !kernel_arg_type !1 !kernel_arg_type_qual !1 !kernel_arg_base_type !1 {
; I32-NEXT: entry:
; I32-NEXT: %0 = call i32 @__gen_ocl_get_group_id0()
; I32-NEXT: %__gen_ocl_get_group_id0 = zext i32 %0 to i64
; I32-NEXT: %1 = call i32 @__gen_ocl_get_group_id1()
; I32-NEXT: %__gen_ocl_get_group_id1 = zext i32 %1 to i64
; I32-NEXT: %2 = call i32 @__gen_ocl_get_local_id0()
; I32-NEXT: %__gen_ocl_get_local_id0 = zext i32 %2 to i64
; I32-NEXT: %3 = call i32 @__gen_ocl_get_local_id1()
; I32-NEXT: %__gen_ocl_get_local_id1 = zext i32 %3 to i64
; I32-NEXT: br label %polly.loop_preheader
; I64: target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128-f32:32:32-f64:64:64-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024"
; I64-next: target triple = "spir64-unknown-unknown"
; I64-LABEL: define spir_kernel void @FUNC_double_parallel_loop_SCOP_0_KERNEL_0(i8 addrspace(1)* %MemRef_A) #0 !kernel_arg_addr_space !0 !kernel_arg_name !1 !kernel_arg_access_qual !1 !kernel_arg_type !1 !kernel_arg_type_qual !1 !kernel_arg_base_type !1 {
; I64-NEXT: entry:
; I64-NEXT: %0 = call i64 @__gen_ocl_get_group_id0()
; I64-NEXT: %1 = call i64 @__gen_ocl_get_group_id1()
; I64-NEXT: %2 = call i64 @__gen_ocl_get_local_id0()
; I64-NEXT: %3 = call i64 @__gen_ocl_get_local_id1()
; I64-NEXT: br label %polly.loop_preheader
; void double_parallel_loop(float A[][1024]) {
; for (long i = 0; i < 1024; i++)
; for (long j = 0; j < 1024; j++)
; A[i][j] += i * j;
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @double_parallel_loop([1024 x float]* %A) {
bb:
br label %bb2
bb2: ; preds = %bb13, %bb
%i.0 = phi i64 [ 0, %bb ], [ %tmp14, %bb13 ]
%exitcond1 = icmp ne i64 %i.0, 1024
br i1 %exitcond1, label %bb3, label %bb15
bb3: ; preds = %bb2
br label %bb4
bb4: ; preds = %bb10, %bb3
%j.0 = phi i64 [ 0, %bb3 ], [ %tmp11, %bb10 ]
%exitcond = icmp ne i64 %j.0, 1024
br i1 %exitcond, label %bb5, label %bb12
bb5: ; preds = %bb4
%tmp = mul nuw nsw i64 %i.0, %j.0
%tmp6 = sitofp i64 %tmp to float
%tmp7 = getelementptr inbounds [1024 x float], [1024 x float]* %A, i64 %i.0, i64 %j.0
%tmp8 = load float, float* %tmp7, align 4
%tmp9 = fadd float %tmp8, %tmp6
store float %tmp9, float* %tmp7, align 4
br label %bb10
bb10: ; preds = %bb5
%tmp11 = add nuw nsw i64 %j.0, 1
br label %bb4
bb12: ; preds = %bb4
br label %bb13
bb13: ; preds = %bb12
%tmp14 = add nuw nsw i64 %i.0, 1
br label %bb2
bb15: ; preds = %bb2
ret void
}