62 lines · plain
1; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds < %s | FileCheck %s2; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds < %s | FileCheck %s3 4; Variables that are not lowered by this pass are left unchanged5; CHECK-NOT: asm6; CHECK-NOT: llvm.amdgcn.module.lds7; CHECK-NOT: llvm.amdgcn.module.lds.t8 9; var1 is removed, var2 stays because it's in compiler.used10; CHECK-NOT: @var111; CHECK: @var2 = addrspace(3) global float poison12@var1 = addrspace(3) global i32 poison13@var2 = addrspace(3) global float poison14 15; constant variables are left to the optimizer / error diagnostics16; CHECK: @const_undef = addrspace(3) constant i32 undef17; CHECK: @const_with_init = addrspace(3) constant i64 818@const_undef = addrspace(3) constant i32 undef19@const_with_init = addrspace(3) constant i64 820 21; Use of an addrspace(3) variable with an initializer is skipped,22; so as to preserve the unimplemented error from llc23; CHECK: @with_init = addrspace(3) global i64 024@with_init = addrspace(3) global i64 025 26; Only local addrspace variables are transformed27; CHECK: @addr4 = addrspace(4) global i64 poison28@addr4 = addrspace(4) global i64 poison29 30; Assign to self is treated as any other initializer, i.e. ignored by this pass31; CHECK: @toself = addrspace(3) global ptr addrspace(3) @toself, align 832@toself = addrspace(3) global ptr addrspace(3) @toself, align 833 34; Use by .used lists doesn't trigger lowering35; CHECK-NOT: @llvm.used =36@llvm.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(3) @var1 to ptr)], section "llvm.metadata"37 38; CHECK: @llvm.compiler.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(3) @var2 to ptr)], section "llvm.metadata"39@llvm.compiler.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(3) @var2 to ptr)], section "llvm.metadata"40 41; Access from a function would cause lowering for non-excluded cases42; CHECK-LABEL: @use_variables()43; CHECK: %c0 = load i32, ptr addrspace(3) @const_undef, align 444; CHECK: %c1 = load i64, ptr addrspace(3) @const_with_init, align 445; CHECK: %v0 = atomicrmw add ptr addrspace(3) @with_init, i64 1 seq_cst46; CHECK: %v1 = atomicrmw add ptr addrspace(4) @addr4, i64 %c1 monotonic47define void @use_variables() {48 %c0 = load i32, ptr addrspace(3) @const_undef, align 449 %c1 = load i64, ptr addrspace(3) @const_with_init, align 450 %v0 = atomicrmw add ptr addrspace(3) @with_init, i64 1 seq_cst51 %v1 = atomicrmw add ptr addrspace(4) @addr4, i64 %c1 monotonic52 ret void53}54 55; CHECK-LABEL: @kern_use()56; CHECK: %inc = atomicrmw add ptr addrspace(3) @llvm.amdgcn.kernel.kern_use.lds, i32 1 monotonic, align 457define amdgpu_kernel void @kern_use() {58 %inc = atomicrmw add ptr addrspace(3) @var1, i32 1 monotonic59 call void @use_variables()60 ret void61}62