| ; 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 |
| |
| ; Variables that are not lowered by this pass are left unchanged |
| ; CHECK-NOT: asm |
| ; CHECK-NOT: llvm.amdgcn.module.lds |
| ; CHECK-NOT: llvm.amdgcn.module.lds.t |
| |
| ; var1, var2 would be transformed were they used from a non-kernel function |
| ; CHECK: @var1 = addrspace(3) global i32 undef |
| ; CHECK: @var2 = addrspace(3) global float undef |
| @var1 = addrspace(3) global i32 undef |
| @var2 = addrspace(3) global float undef |
| |
| ; constant variables are left to the optimizer / error diagnostics |
| ; CHECK: @const_undef = addrspace(3) constant i32 undef |
| ; CHECK: @const_with_init = addrspace(3) constant i64 8 |
| @const_undef = addrspace(3) constant i32 undef |
| @const_with_init = addrspace(3) constant i64 8 |
| |
| ; External and constant are both left to the optimizer / error diagnostics |
| ; CHECK: @extern = external addrspace(3) global i32 |
| @extern = external addrspace(3) global i32 |
| |
| ; Use of an addrspace(3) variable with an initializer is skipped, |
| ; so as to preserve the unimplemented error from llc |
| ; CHECK: @with_init = addrspace(3) global i64 0 |
| @with_init = addrspace(3) global i64 0 |
| |
| ; Only local addrspace variables are transformed |
| ; CHECK: @addr4 = addrspace(4) global i64 undef |
| @addr4 = addrspace(4) global i64 undef |
| |
| ; Assign to self is treated as any other initializer, i.e. ignored by this pass |
| ; CHECK: @toself = addrspace(3) global float addrspace(3)* bitcast (float addrspace(3)* addrspace(3)* @toself to float addrspace(3)*), align 8 |
| @toself = addrspace(3) global float addrspace(3)* bitcast (float addrspace(3)* addrspace(3)* @toself to float addrspace(3)*), align 8 |
| |
| ; Use by .used lists doesn't trigger lowering |
| ; CHECK: @llvm.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(3)* bitcast (i32 addrspace(3)* @var1 to i8 addrspace(3)*) to i8*)], section "llvm.metadata" |
| @llvm.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(3)* bitcast (i32 addrspace(3)* @var1 to i8 addrspace(3)*) to i8*)], section "llvm.metadata" |
| |
| ; CHECK: @llvm.compiler.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(3)* bitcast (float addrspace(3)* @var2 to i8 addrspace(3)*) to i8*)], section "llvm.metadata" |
| @llvm.compiler.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(3)* bitcast (float addrspace(3)* @var2 to i8 addrspace(3)*) to i8*)], section "llvm.metadata" |
| |
| ; Access from a function would cause lowering for non-excluded cases |
| ; CHECK-LABEL: @use_variables() |
| ; CHECK: %c0 = load i32, i32 addrspace(3)* @const_undef, align 4 |
| ; CHECK: %c1 = load i64, i64 addrspace(3)* @const_with_init, align 4 |
| ; CHECK: %v0 = atomicrmw add i64 addrspace(3)* @with_init, i64 1 seq_cst |
| ; CHECK: %v1 = cmpxchg i32 addrspace(3)* @extern, i32 4, i32 %c0 acq_rel monotonic |
| ; CHECK: %v2 = atomicrmw add i64 addrspace(4)* @addr4, i64 %c1 monotonic |
| define void @use_variables() { |
| %c0 = load i32, i32 addrspace(3)* @const_undef, align 4 |
| %c1 = load i64, i64 addrspace(3)* @const_with_init, align 4 |
| %v0 = atomicrmw add i64 addrspace(3)* @with_init, i64 1 seq_cst |
| %v1 = cmpxchg i32 addrspace(3)* @extern, i32 4, i32 %c0 acq_rel monotonic |
| %v2 = atomicrmw add i64 addrspace(4)* @addr4, i64 %c1 monotonic |
| ret void |
| } |
| |
| ; Use by kernel doesn't trigger lowering |
| ; CHECK-LABEL: @kern_use() |
| ; CHECK: %inc = atomicrmw add i32 addrspace(3)* @var1, i32 1 monotonic |
| define amdgpu_kernel void @kern_use() { |
| %inc = atomicrmw add i32 addrspace(3)* @var1, i32 1 monotonic |
| call void @use_variables() |
| ret void |
| } |