xref: /llvm-project/llvm/test/CodeGen/AMDGPU/lower-module-lds-used-list.ll (revision e39f6c1844fab59c638d8059a6cf139adb42279a)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
2; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds --amdgpu-lower-module-lds-strategy=module < %s | FileCheck %s
3; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds --amdgpu-lower-module-lds-strategy=module < %s | FileCheck %s
4
5; Check new struct is added to compiler.used and that the replaced variable is removed
6
7; CHECK: %llvm.amdgcn.module.lds.t = type { float }
8; CHECK: @ignored = addrspace(1) global i64 0
9
10; @ignored still in list, @tolower removed, llvm.amdgcn.module.lds appended
11; Start with one value to replace and one to ignore in the .use list
12
13; @ignored still in list, @tolower removed
14; CHECK: @llvm.used = appending global [1 x ptr] [ptr addrspacecast (ptr addrspace(1) @ignored to ptr)], section "llvm.metadata"
15
16; CHECK: @llvm.amdgcn.module.lds = internal addrspace(3) global %llvm.amdgcn.module.lds.t poison, align 8
17
18; CHECK-NOT: @tolower
19
20@tolower = addrspace(3) global float poison, align 8
21
22; A variable that is unchanged by pass
23@ignored = addrspace(1) global i64 0
24
25
26@llvm.used = appending global [2 x ptr] [ptr addrspacecast (ptr addrspace(3) @tolower to ptr), ptr addrspacecast (ptr addrspace(1) @ignored to ptr)], section "llvm.metadata"
27
28; @ignored still in list, @tolower removed, llvm.amdgcn.module.lds appended
29; CHECK: @llvm.compiler.used = appending addrspace(1) global [2 x ptr] [ptr addrspacecast (ptr addrspace(1) @ignored to ptr), ptr addrspacecast (ptr addrspace(3) @llvm.amdgcn.module.lds to ptr)], section "llvm.metadata"
30
31@llvm.compiler.used = appending global [2 x ptr] [ptr addrspacecast (ptr addrspace(3) @tolower to ptr), ptr addrspacecast (ptr addrspace(1) @ignored to ptr)], section "llvm.metadata"
32
33
34; Functions that are not called are ignored by the lowering
35define amdgpu_kernel void @call_func() {
36; CHECK-LABEL: define amdgpu_kernel void @call_func(
37; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
38; CHECK-NEXT:    call void @llvm.donothing() [ "ExplicitUse"(ptr addrspace(3) @llvm.amdgcn.module.lds) ]
39; CHECK-NEXT:    call void @func()
40; CHECK-NEXT:    ret void
41;
42  call void @func()
43  ret void
44}
45
46define void @func() {
47; CHECK-LABEL: define void @func() {
48; CHECK-NEXT:    [[DEC:%.*]] = atomicrmw fsub ptr addrspace(3) @llvm.amdgcn.module.lds, float 1.000000e+00 monotonic, align 8
49; CHECK-NEXT:    [[UNUSED0:%.*]] = atomicrmw add ptr addrspace(1) @ignored, i64 1 monotonic, align 8
50; CHECK-NEXT:    ret void
51;
52  %dec = atomicrmw fsub ptr addrspace(3) @tolower, float 1.0 monotonic
53  %unused0 = atomicrmw add ptr addrspace(1) @ignored, i64 1 monotonic
54  ret void
55}
56