llvm/test/CodeGen/AMDGPU/lower-module-lds-all-indirect-accesses.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds --amdgpu-lower-module-lds-strategy=hybrid < %s | FileCheck %s

;; Reduced from a larger test case. Checks that functions and kernels that use only dynamic lds
;; are lowered successfully. Previously they only worked if the kernel happened to also use static lds
;; variables. Artefact of implementing dynamic variables by adapting existing code for static.

@A = external addrspace(3) global [8 x ptr]
@B = external addrspace(3) global [0 x i32]

define amdgpu_kernel void @kernel_0() {
; CHECK-LABEL: define amdgpu_kernel void @kernel_0() #0 !llvm.amdgcn.lds.kernel.id !1 {
; CHECK-NEXT:    call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.kernel.kernel_0.lds) ]
; CHECK-NEXT:    call void @call_store_A()
; CHECK-NEXT:    ret void
;
  call void @call_store_A()
  ret void
}

define amdgpu_kernel void @kernel_1() {
; CHECK-LABEL: define amdgpu_kernel void @kernel_1() !llvm.amdgcn.lds.kernel.id !2 {
; CHECK-NEXT:    call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.kernel_1.dynlds) ]
; CHECK-NEXT:    [[PTR:%.*]] = call ptr @get_B_ptr()
; CHECK-NEXT:    ret void
;
  %ptr = call ptr @get_B_ptr()
  ret void
}

define amdgpu_kernel void @kernel_2() {
; CHECK-LABEL: define amdgpu_kernel void @kernel_2() #0 !llvm.amdgcn.lds.kernel.id !3 {
; CHECK-NEXT:    call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.kernel.kernel_2.lds) ]
; CHECK-NEXT:    call void @store_A()
; CHECK-NEXT:    ret void
;
  call void @store_A()
  ret void
}

define amdgpu_kernel void @kernel_3() {
; CHECK-LABEL: define amdgpu_kernel void @kernel_3() !llvm.amdgcn.lds.kernel.id !4 {
; CHECK-NEXT:    call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.kernel_3.dynlds) ]
; CHECK-NEXT:    [[PTR:%.*]] = call ptr @get_B_ptr()
; CHECK-NEXT:    ret void
;
  %ptr = call ptr @get_B_ptr()
  ret void
}

define private void @call_store_A() {
; CHECK-LABEL: define private void @call_store_A() {
; CHECK-NEXT:    call void @store_A()
; CHECK-NEXT:    ret void
;
  call void @store_A()
  ret void
}

define private void @store_A() {
; CHECK-LABEL: define private void @store_A() {
; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @llvm.amdgcn.lds.kernel.id()
; CHECK-NEXT:    [[A:%.*]] = getelementptr inbounds [4 x [1 x i32]], ptr addrspace(4) @llvm.amdgcn.lds.offset.table, i32 0, i32 [[TMP1]], i32 0
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr addrspace(4) [[A]], align 4
; CHECK-NEXT:    [[A1:%.*]] = inttoptr i32 [[TMP2]] to ptr addrspace(3)
; CHECK-NEXT:    [[TMP3:%.*]] = addrspacecast ptr addrspace(3) [[A1]] to ptr
; CHECK-NEXT:    store ptr [[TMP3]], ptr null, align 8
; CHECK-NEXT:    ret void
;
  store ptr addrspacecast (ptr addrspace(3) @A to ptr), ptr null
  ret void
}

define private ptr @get_B_ptr() {
; CHECK-LABEL: define private ptr @get_B_ptr() {
; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @llvm.amdgcn.lds.kernel.id()
; CHECK-NEXT:    [[B:%.*]] = getelementptr inbounds [4 x i32], ptr addrspace(4) @llvm.amdgcn.dynlds.offset.table, i32 0, i32 [[TMP1]]
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr addrspace(4) [[B]], align 4
; CHECK-NEXT:    [[B1:%.*]] = inttoptr i32 [[TMP2]] to ptr addrspace(3)
; CHECK-NEXT:    [[TMP3:%.*]] = addrspacecast ptr addrspace(3) [[B1]] to ptr
; CHECK-NEXT:    ret ptr [[TMP3]]
;
  ret ptr addrspacecast (ptr addrspace(3) @B to ptr)
}

; CHECK: attributes #0 = { "amdgpu-lds-size"="64" }