| ; RUN: opt -S -mtriple=amdgcn-- -amdgpu-replace-lds-use-with-pointer -amdgpu-enable-lds-replace-with-pointer=true < %s | FileCheck %s |
| |
| ; DESCRIPTION: |
| ; |
| ; There are three lds globals defined here, and these three lds are used within a single |
| ; non-kernel function, and this non-kernel function is reachable from kernel. Hence pointer |
| ; replacement is required for all three lds globals. |
| ; |
| |
| ; Original LDS should exist. |
| ; CHECK: @lds1 = internal addrspace(3) global [1 x i32] undef, align 4 |
| ; CHECK: @lds2 = internal addrspace(3) global [2 x i32] undef, align 4 |
| ; CHECK: @lds3 = internal addrspace(3) global [3 x i32] undef, align 4 |
| @lds1 = internal addrspace(3) global [1 x i32] undef, align 4 |
| @lds2 = internal addrspace(3) global [2 x i32] undef, align 4 |
| @lds3 = internal addrspace(3) global [3 x i32] undef, align 4 |
| |
| ; Pointers should be created. |
| ; CHECK: @lds1.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2 |
| ; CHECK: @lds2.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2 |
| ; CHECK: @lds3.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2 |
| |
| ; Pointer replacement code should be added. |
| define internal void @function() { |
| ; CHECK-LABEL: entry: |
| ; CHECK: %0 = load i16, i16 addrspace(3)* @lds3.ptr, align 2 |
| ; CHECK: %1 = getelementptr i8, i8 addrspace(3)* null, i16 %0 |
| ; CHECK: %2 = bitcast i8 addrspace(3)* %1 to [3 x i32] addrspace(3)* |
| ; CHECK: %3 = load i16, i16 addrspace(3)* @lds2.ptr, align 2 |
| ; CHECK: %4 = getelementptr i8, i8 addrspace(3)* null, i16 %3 |
| ; CHECK: %5 = bitcast i8 addrspace(3)* %4 to [2 x i32] addrspace(3)* |
| ; CHECK: %6 = load i16, i16 addrspace(3)* @lds1.ptr, align 2 |
| ; CHECK: %7 = getelementptr i8, i8 addrspace(3)* null, i16 %6 |
| ; CHECK: %8 = bitcast i8 addrspace(3)* %7 to [1 x i32] addrspace(3)* |
| ; CHECK: %gep1 = getelementptr inbounds [1 x i32], [1 x i32] addrspace(3)* %8, i32 0, i32 0 |
| ; CHECK: %gep2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(3)* %5, i32 0, i32 0 |
| ; CHECK: %gep3 = getelementptr inbounds [3 x i32], [3 x i32] addrspace(3)* %2, i32 0, i32 0 |
| ; CHECK: ret void |
| entry: |
| %gep1 = getelementptr inbounds [1 x i32], [1 x i32] addrspace(3)* @lds1, i32 0, i32 0 |
| %gep2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(3)* @lds2, i32 0, i32 0 |
| %gep3 = getelementptr inbounds [3 x i32], [3 x i32] addrspace(3)* @lds3, i32 0, i32 0 |
| ret void |
| } |
| |
| ; Pointer initialization code shoud be added; |
| define protected amdgpu_kernel void @kernel() { |
| ; CHECK-LABEL: entry: |
| ; CHECK: %0 = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) |
| ; CHECK: %1 = icmp eq i32 %0, 0 |
| ; CHECK: br i1 %1, label %2, label %3 |
| ; |
| ; CHECK-LABEL: 2: |
| ; CHECK: store i16 ptrtoint ([3 x i32] addrspace(3)* @lds3 to i16), i16 addrspace(3)* @lds3.ptr, align 2 |
| ; CHECK: store i16 ptrtoint ([2 x i32] addrspace(3)* @lds2 to i16), i16 addrspace(3)* @lds2.ptr, align 2 |
| ; CHECK: store i16 ptrtoint ([1 x i32] addrspace(3)* @lds1 to i16), i16 addrspace(3)* @lds1.ptr, align 2 |
| ; CHECK: br label %3 |
| ; |
| ; CHECK-LABEL: 3: |
| ; CHECK: call void @llvm.amdgcn.wave.barrier() |
| ; CHECK: call void @function() |
| ; CHECK: ret void |
| entry: |
| call void @function() |
| ret void |
| } |