1; RUN: opt -S -mtriple=amdgcn-- -amdgpu-replace-lds-use-with-pointer -amdgpu-enable-lds-replace-with-pointer=true < %s | FileCheck %s 2 3; DESCRIPTION: 4; 5; There is one lds global defined here, and this lds is used within a single non-kernel 6; function, as an operand of nested constant expression, and this non-kernel function is 7; reachable from kernel. Hence nested constant expression should to be converted into a 8; series of instructons and pointer replacement should take place. 9; 10 11; Original LDS should exist. 12; CHECK: @used_only_within_func = addrspace(3) global [4 x i32] undef, align 4 13@used_only_within_func = addrspace(3) global [4 x i32] undef, align 4 14 15; Pointers should be created. 16; CHECK: @used_only_within_func.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2 17 18; Pointer replacement code should be added. 19define void @f0(i32 %x) { 20; CHECK-LABEL: entry: 21; CHECK: %0 = load i16, i16 addrspace(3)* @used_only_within_func.ptr, align 2 22; CHECK: %1 = getelementptr i8, i8 addrspace(3)* null, i16 %0 23; CHECK: %2 = bitcast i8 addrspace(3)* %1 to [4 x i32] addrspace(3)* 24; CHECK: %3 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* %2, i32 0, i32 0 25; CHECK: %4 = addrspacecast i32 addrspace(3)* %3 to i32* 26; CHECK: %5 = ptrtoint i32* %4 to i64 27; CHECK: %6 = add i64 %5, %5 28; CHECK: %7 = inttoptr i64 %6 to i32* 29; CHECK: store i32 %x, i32* %7, align 4 30; CHECK: ret void 31entry: 32 store i32 %x, i32* inttoptr (i64 add (i64 ptrtoint (i32* addrspacecast (i32 addrspace(3)* bitcast ([4 x i32] addrspace(3)* @used_only_within_func to i32 addrspace(3)*) to i32*) to i64), i64 ptrtoint (i32* addrspacecast (i32 addrspace(3)* bitcast ([4 x i32] addrspace(3)* @used_only_within_func to i32 addrspace(3)*) to i32*) to i64)) to i32*), align 4 33 ret void 34} 35 36; Pointer initialization code shoud be added 37define amdgpu_kernel void @k0() { 38; CHECK-LABEL: entry: 39; CHECK: %0 = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) 40; CHECK: %1 = icmp eq i32 %0, 0 41; CHECK: br i1 %1, label %2, label %3 42; 43; CHECK-LABEL: 2: 44; CHECK: store i16 ptrtoint ([4 x i32] addrspace(3)* @used_only_within_func to i16), i16 addrspace(3)* @used_only_within_func.ptr, align 2 45; CHECK: br label %3 46; 47; CHECK-LABEL: 3: 48; CHECK: call void @llvm.amdgcn.wave.barrier() 49; CHECK: call void @f0(i32 0) 50; CHECK: ret void 51entry: 52 call void @f0(i32 0) 53 ret void 54} 55