diff --git a/llvm/test/CodeGen/AMDGPU/invariant-image-load.ll b/llvm/test/CodeGen/AMDGPU/invariant-image-load.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/invariant-image-load.ll @@ -0,0 +1,29 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc -march=amdgcn -mcpu=gfx900 < %s | FileCheck %s -check-prefix=GFX9 +; RUN: llc -global-isel -march=amdgcn -mcpu=gfx900 < %s | FileCheck %s -check-prefix=GFX9 + +; Marking the image loads as invariant should allow both loads to be hoisted +; above both stores. +define amdgpu_ps void @test(<8 x i32> inreg %load, <8 x i32> inreg %store) { +; GFX9-LABEL: test: +; GFX9: ; %bb.0: +; GFX9-NEXT: v_mov_b32_e32 v0, 0 +; GFX9-NEXT: image_load v1, v0, s[0:7] dmask:0x1 unorm +; GFX9-NEXT: s_waitcnt vmcnt(0) +; GFX9-NEXT: image_store v1, v0, s[8:15] dmask:0x1 unorm +; GFX9-NEXT: v_mov_b32_e32 v0, 1 +; GFX9-NEXT: image_load v1, v0, s[0:7] dmask:0x1 unorm +; GFX9-NEXT: s_waitcnt vmcnt(0) +; GFX9-NEXT: image_store v1, v0, s[8:15] dmask:0x1 unorm +; GFX9-NEXT: s_endpgm + %data0 = call float @llvm.amdgcn.image.load.1d.f32.i32(i32 1, i32 0, <8 x i32> %load, i32 0, i32 0), !invariant.load !0 + call void @llvm.amdgcn.image.store.1d.f32.i32(float %data0, i32 1, i32 0, <8 x i32> %store, i32 0, i32 0) + %data1 = call float @llvm.amdgcn.image.load.1d.f32.i32(i32 1, i32 1, <8 x i32> %load, i32 0, i32 0), !invariant.load !0 + call void @llvm.amdgcn.image.store.1d.f32.i32(float %data1, i32 1, i32 1, <8 x i32> %store, i32 0, i32 0) + ret void +} + +declare float @llvm.amdgcn.image.load.1d.f32.i32(i32 immarg, i32, <8 x i32>, i32 immarg, i32 immarg) +declare void @llvm.amdgcn.image.store.1d.f32.i32(float, i32 immarg, i32, <8 x i32>, i32 immarg, i32 immarg) + +!0 = !{}