llvm/test/CodeGen/AMDGPU/lower-kernel-lds-constexpr.ll

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

@lds.1 = internal unnamed_addr addrspace(3) global [2 x i8] undef, align 1

; CHECK: %llvm.amdgcn.kernel.k0.lds.t = type { [2 x i8] }
; CHECK: %llvm.amdgcn.kernel.k1.lds.t = type { [2 x i8] }
; CHECK: %llvm.amdgcn.kernel.k2.lds.t = type { i32 }
; CHECK: %llvm.amdgcn.kernel.k3.lds.t = type { [32 x i8] }
; CHECK: %llvm.amdgcn.kernel.k4.lds.t = type { [2 x i8] }
; CHECK: %llvm.amdgcn.kernel.k5.lds.t = type { [505 x i32] }
; CHECK: %llvm.amdgcn.kernel.k6.lds.t = type { [4 x i32] }

; Use constant from different kernels
;.
; CHECK: @llvm.amdgcn.kernel.k0.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k0.lds.t undef, align 2
; CHECK: @llvm.amdgcn.kernel.k1.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k1.lds.t undef, align 2
; CHECK: @llvm.amdgcn.kernel.k2.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k2.lds.t undef, align 4
; CHECK: @llvm.amdgcn.kernel.k3.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k3.lds.t undef, align 16
; CHECK: @llvm.amdgcn.kernel.k4.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k4.lds.t undef, align 2
; CHECK: @llvm.amdgcn.kernel.k5.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k5.lds.t undef, align 16
; CHECK: @llvm.amdgcn.kernel.k6.lds = internal addrspace(3) global %llvm.amdgcn.kernel.k6.lds.t undef, align 16
;.
define amdgpu_kernel void @k0(i64 %x) {
; CHECK-LABEL: @k0(
; CHECK-NEXT:    %1 = getelementptr inbounds [2 x i8], [2 x i8] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k0.lds.t, %llvm.amdgcn.kernel.k0.lds.t addrspace(3)* @llvm.amdgcn.kernel.k0.lds, i32 0, i32 0), i32 0, i32 0
; CHECK-NEXT:    %2 = addrspacecast i8 addrspace(3)* %1 to i8*
; CHECK-NEXT:    %ptr = getelementptr inbounds i8, i8* %2, i64 %x
; CHECK-NEXT:    store i8 1, i8* %ptr, align 1
; CHECK-NEXT:    ret void
;
  %ptr = getelementptr inbounds i8, i8* addrspacecast ([2 x i8] addrspace(3)* @lds.1 to i8*), i64 %x
  store i8 1, i8 addrspace(0)* %ptr, align 1
  ret void
}

define amdgpu_kernel void @k1(i64 %x) {
; CHECK-LABEL: @k1(
; CHECK-NEXT:    %1 = getelementptr inbounds [2 x i8], [2 x i8] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k1.lds.t, %llvm.amdgcn.kernel.k1.lds.t addrspace(3)* @llvm.amdgcn.kernel.k1.lds, i32 0, i32 0), i32 0, i32 0
; CHECK-NEXT:    %2 = addrspacecast i8 addrspace(3)* %1 to i8*
; CHECK-NEXT:    %ptr = getelementptr inbounds i8, i8* %2, i64 %x
; CHECK-NEXT:    store i8 1, i8* %ptr, align 1
; CHECK-NEXT:    ret void
;
  %ptr = getelementptr inbounds i8, i8* addrspacecast ([2 x i8] addrspace(3)* @lds.1 to i8*), i64 %x
  store i8 1, i8 addrspace(0)* %ptr, align 1
  ret void
}

@lds.2 = internal unnamed_addr addrspace(3) global i32 undef, align 4

; Use constant twice from the same kernel
define amdgpu_kernel void @k2(i64 %x) {
; CHECK-LABEL: @k2(
; CHECK-NEXT:    %ptr1 = bitcast i32 addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k2.lds.t, %llvm.amdgcn.kernel.k2.lds.t addrspace(3)* @llvm.amdgcn.kernel.k2.lds, i32 0, i32 0) to i8 addrspace(3)*
; CHECK-NEXT:    store i8 1, i8 addrspace(3)* %ptr1, align 4
; CHECK-NEXT:    %ptr2 = bitcast i32 addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k2.lds.t, %llvm.amdgcn.kernel.k2.lds.t addrspace(3)* @llvm.amdgcn.kernel.k2.lds, i32 0, i32 0) to i8 addrspace(3)*
; CHECK-NEXT:    store i8 2, i8 addrspace(3)* %ptr2, align 4
; CHECK-NEXT:    ret void
;
  %ptr1 = bitcast i32 addrspace(3)* @lds.2 to i8 addrspace(3)*
  store i8 1, i8 addrspace(3)* %ptr1, align 4
  %ptr2 = bitcast i32 addrspace(3)* @lds.2 to i8 addrspace(3)*
  store i8 2, i8 addrspace(3)* %ptr2, align 4
  ret void
}

@lds.3 = internal unnamed_addr addrspace(3) global [32 x i8] undef, align 1

; Use constant twice from the same kernel but a different other constant.
define amdgpu_kernel void @k3(i64 %x) {
; CHECK-LABEL: @k3(
; CHECK-NEXT:    %1 = getelementptr inbounds [32 x i8], [32 x i8] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k3.lds.t, %llvm.amdgcn.kernel.k3.lds.t addrspace(3)* @llvm.amdgcn.kernel.k3.lds, i32 0, i32 0), i32 0, i32 16
; CHECK-NEXT:    %2 = bitcast i8 addrspace(3)* %1 to i64 addrspace(3)*
; CHECK-NEXT:    %ptr1 = addrspacecast i64 addrspace(3)* %2 to i64*
; CHECK-NEXT:    store i64 1, i64* %ptr1, align 1
; CHECK-NEXT:    %3 = getelementptr inbounds [32 x i8], [32 x i8] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k3.lds.t, %llvm.amdgcn.kernel.k3.lds.t addrspace(3)* @llvm.amdgcn.kernel.k3.lds, i32 0, i32 0), i32 0, i32 24
; CHECK-NEXT:    %4 = bitcast i8 addrspace(3)* %3 to i64 addrspace(3)*
; CHECK-NEXT:    %ptr2 = addrspacecast i64 addrspace(3)* %4 to i64*
; CHECK-NEXT:    store i64 2, i64* %ptr2, align 8
; CHECK-NEXT:    ret void
;
  %ptr1 = addrspacecast i64 addrspace(3)* bitcast (i8 addrspace(3)* getelementptr inbounds ([32 x i8], [32 x i8] addrspace(3)* @lds.3, i32 0, i32 16) to i64 addrspace(3)*) to i64*
  store i64 1, i64* %ptr1, align 1
  %ptr2 = addrspacecast i64 addrspace(3)* bitcast (i8 addrspace(3)* getelementptr inbounds ([32 x i8], [32 x i8] addrspace(3)* @lds.3, i32 0, i32 24) to i64 addrspace(3)*) to i64*
  store i64 2, i64* %ptr2, align 1
  ret void
}

; @lds.1 is used from constant expressions in different kernels.
define amdgpu_kernel void @k4(i64 %x) {
; CHECK-LABEL: @k4(
; CHECK-NEXT:    %1 = getelementptr inbounds [2 x i8], [2 x i8] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k4.lds.t, %llvm.amdgcn.kernel.k4.lds.t addrspace(3)* @llvm.amdgcn.kernel.k4.lds, i32 0, i32 0), i32 0, i32 0
; CHECK-NEXT:    %2 = addrspacecast i8 addrspace(3)* %1 to i8*
; CHECK-NEXT:    %ptr = getelementptr inbounds i8, i8* %2, i64 %x
; CHECK-NEXT:    store i8 1, i8* %ptr, align 1
; CHECK-NEXT:    ret void
;
  %ptr = getelementptr inbounds i8, i8* addrspacecast ([2 x i8] addrspace(3)* @lds.1 to i8*), i64 %x
  store i8 1, i8 addrspace(0)* %ptr, align 1
  ret void
}

@lds.4 = internal unnamed_addr addrspace(3) global [505 x i32] undef, align 4

; Multiple constexpr use in a same instruction.
define amdgpu_kernel void @k5() {
; CHECK-LABEL: @k5(
; CHECK-NEXT: %1 = addrspacecast [505 x i32] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k5.lds.t, %llvm.amdgcn.kernel.k5.lds.t addrspace(3)* @llvm.amdgcn.kernel.k5.lds, i32 0, i32 0) to [505 x i32]*
; CHECK-NEXT: %2 = getelementptr inbounds [505 x i32], [505 x i32]* %1, i64 0, i64 0
; CHECK-NEXT: call void undef(i32* %2, i32* %2)
;
  call void undef(i32* getelementptr inbounds ([505 x i32], [505 x i32]* addrspacecast ([505 x i32] addrspace(3)* @lds.4 to [505 x i32]*), i64 0, i64 0), i32* getelementptr inbounds ([505 x i32], [505 x i32]* addrspacecast ([505 x i32] addrspace(3)* @lds.4 to [505 x i32]*), i64 0, i64 0))
  ret void
}

@lds.5 = internal addrspace(3) global [4 x i32] undef, align 4

; Both the *value* and *pointer* operands of store instruction are constant expressions, and
; both of these constant expression paths use same lds - @lds.5. Hence both of these constant
; expression operands of store should be replaced by corresponding instruction sequence.
define amdgpu_kernel void @k6() {
; CHECK-LABEL: @k6(
; CHECK-NEXT: %1 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* getelementptr inbounds (%llvm.amdgcn.kernel.k6.lds.t, %llvm.amdgcn.kernel.k6.lds.t addrspace(3)* @llvm.amdgcn.kernel.k6.lds, i32 0, i32 0), i32 0, i32 2
; CHECK-NEXT: %2 = ptrtoint i32 addrspace(3)* %1 to i32
; CHECK-NEXT: store i32 %2, i32 addrspace(3)* %1, align 8
; CHECK-NEXT: ret void
;
  store i32 ptrtoint (i32 addrspace(3)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(3)* @lds.5, i32 0, i32 2) to i32), i32 addrspace(3)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(3)* @lds.5, i32 0, i32 2)
  ret void
}