1 ; RUN: opt -S -mtriple=amdgcn-- -amdgpu-replace-lds-use-with-pointer -amdgpu-enable-lds-replace-with-pointer=true < %s | FileCheck %s
4 ; There is one lds global defined here, and this lds is used within a single non-kernel
5 ; function, as an operand of nested constant expression, and this non-kernel function is
6 ; reachable from kernel. Hence nested constant expression should to be converted into a
7 ; series of instructons and pointer replacement should take place. But, important note
8 ; is - only constant expression operands which uses lds should be converted into
9 ; instructions, other constant expression operands which do not use lds should be left
13 ; Original LDS should exist.
14 ; CHECK: @lds_used_within_function = internal addrspace(3) global [4 x i32] undef, align 4
15 @lds_used_within_function = internal addrspace(3) global [4 x i32] undef, align 4
17 ; Non-LDS global should exist as it is.
18 ; CHECK: @global_var = internal addrspace(1) global [4 x i32] undef, align 4
19 @global_var = internal addrspace(1) global [4 x i32] undef, align 4
21 ; Pointer should be created.
22 ; CHECK: @lds_used_within_function.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2
24 ; Pointer replacement code should be added.
25 define internal void @function() {
27 ; CHECK: %0 = load i16, i16 addrspace(3)* @lds_used_within_function.ptr, align 2
28 ; CHECK: %1 = getelementptr i8, i8 addrspace(3)* null, i16 %0
29 ; CHECK: %2 = bitcast i8 addrspace(3)* %1 to [4 x i32] addrspace(3)*
30 ; CHECK: %3 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* %2, i32 0, i32 2
31 ; CHECK: %4 = addrspacecast i32 addrspace(3)* %3 to i32*
32 ; CHECK: %5 = ptrtoint i32* %4 to i32
33 ; CHECK: %6 = add i32 %5, ptrtoint (i32 addrspace(1)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(1)* @global_var, i32 0, i32 2) to i32)
36 %0 = add i32 ptrtoint (i32* addrspacecast (i32 addrspace(3)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(3)* @lds_used_within_function, i32 0, i32 2) to i32*) to i32), ptrtoint (i32 addrspace(1)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(1)* @global_var, i32 0, i32 2) to i32)
40 ; Pointer initialization code shoud be added
41 define protected amdgpu_kernel void @kernel() {
43 ; CHECK: %0 = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
44 ; CHECK: %1 = icmp eq i32 %0, 0
45 ; CHECK: br i1 %1, label %2, label %3
48 ; CHECK: store i16 ptrtoint ([4 x i32] addrspace(3)* @lds_used_within_function to i16), i16 addrspace(3)* @lds_used_within_function.ptr, align 2
52 ; CHECK: call void @llvm.amdgcn.wave.barrier()
53 ; CHECK: call void @function()