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GPGPU: add scop parameters to kernel arguments 

llvm-svn: 275955
This commit is contained in:
Tobias Grosser 2016-07-19 07:33:06 +00:00
parent f6044bd0ef
commit c84a1995fe
2 changed files with 57 additions and 1 deletions
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15
polly/lib/CodeGen/PPCGCodeGeneration.cpp
View File

@ -141,7 +141,7 @@ private:
///
/// - One i8 pointer for each external array reference used in the kernel.
/// - Host iterators
/// - Parameters (TODO)
/// - Parameters
/// - Other LLVM Value references (TODO)
///
/// @param Kernel The kernel to generate the function declaration for.
@ -228,6 +228,11 @@ Function *GPUNodeBuilder::createKernelFunctionDecl(ppcg_kernel *Kernel) {
for (long i = 0; i < NumHostIters; i++)
Args.push_back(Builder.getInt64Ty());
int NumVars = isl_space_dim(Kernel->space, isl_dim_param);
for (long i = 0; i < NumVars; i++)
Args.push_back(Builder.getInt64Ty());
auto *FT = FunctionType::get(Builder.getVoidTy(), Args, false);
auto *FN = Function::Create(FT, Function::ExternalLinkage, Identifier,
GPUModule.get());
@ -250,6 +255,14 @@ Function *GPUNodeBuilder::createKernelFunctionDecl(ppcg_kernel *Kernel) {
Arg++;
}
for (long i = 0; i < NumVars; i++) {
isl_id *Id = isl_space_get_dim_id(Kernel->space, isl_dim_param, i);
Arg->setName(isl_id_get_name(Id));
IDToValue[Id] = &*Arg;
KernelIDs.insert(std::unique_ptr<isl_id, IslIdDeleter>(Id));
Arg++;
}
return FN;
}

43
polly/test/GPGPU/kernel-params-scop-parameter.ll Normal file
View File

@ -0,0 +1,43 @@
; RUN: opt %loadPolly -polly-codegen-ppcg -polly-acc-dump-kernel-ir \
; RUN: -disable-output < %s | \
; RUN: FileCheck -check-prefix=KERNEL-IR %s
; void kernel_params_scop_parameter(float A[], long n) {
; for (long i = 0; i < n; i++)
; A[i] += 42;
; }
; KERNEL-IR: define ptx_kernel void @kernel_0(i8* %MemRef_A, i64 %n) {
; KERNEL-IR-NEXT: entry:
; KERNEL-IR-NEXT: %0 = call i32 @llvm.nvvm.read.ptx.sreg.ctaid.x()
; KERNEL-IR-NEXT: %b0 = zext i32 %0 to i64
; KERNEL-IR-NEXT: %1 = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
; KERNEL-IR-NEXT: %t0 = zext i32 %1 to i64
; KERNEL-IR-NEXT: ret void
; KERNEL-IR-NEXT: }
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @kernel_params_scop_parameter(float* %A, i64 %n) {
bb:
br label %bb1
bb1: ; preds = %bb6, %bb
%i.0 = phi i64 [ 0, %bb ], [ %tmp7, %bb6 ]
%tmp = icmp slt i64 %i.0, %n
br i1 %tmp, label %bb2, label %bb8
bb2: ; preds = %bb1
%tmp3 = getelementptr inbounds float, float* %A, i64 %i.0
%tmp4 = load float, float* %tmp3, align 4
%tmp5 = fadd float %tmp4, 4.200000e+01
store float %tmp5, float* %tmp3, align 4
br label %bb6
bb6: ; preds = %bb2
%tmp7 = add nuw nsw i64 %i.0, 1
br label %bb1
bb8: ; preds = %bb1
ret void
}