[llvm] [NFC][AMDGPU] Pre-commit tests for workgroup to wavefront demotion (PR #224064)

[Zach Goldthorpe via llvm-commits]

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@@ -0,0 +1,67 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: llc -mtriple=amdgpu12.50 -O0 < %s | FileCheck %s --check-prefixes=GFX1250
+
+declare void @llvm.amdgcn.global.load.async.to.lds.b32(ptr addrspace(1) nocapture, ptr addrspace(3) nocapture, i32, i32)
+
+define amdgpu_kernel void @lds_wg_fence_release_single32(ptr addrspace(3) %lds) #0 {
+; GFX1250-LABEL: lds_wg_fence_release_single32:
+; GFX1250:       ; %bb.0:
+; GFX1250-NEXT:    s_setreg_imm32_b32 hwreg(HW_REG_WAVE_MODE, 25, 1), 1 ; msbs: dst=0 src0=0 src1=0 src2=0
+; GFX1250-NEXT:    s_mov_b64 s[64:65], 0
+; GFX1250-NEXT:    v_nop
+; GFX1250-NEXT:    global_prefetch_b8 v0, s[64:65] scope:SCOPE_SE
+; GFX1250-NEXT:    s_load_b32 s0, s[4:5], 0x24 nv
+; GFX1250-NEXT:    s_wait_kmcnt 0x0
+; GFX1250-NEXT:    s_load_b32 s0, s[4:5], 0x24 nv
+; GFX1250-NEXT:    v_mov_b32_e32 v1, 1
+; GFX1250-NEXT:    s_wait_kmcnt 0x0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    ds_store_b32 v0, v1
+; GFX1250-NEXT:    s_wait_storecnt 0x0
+; GFX1250-NEXT:    s_wait_loadcnt_dscnt 0x0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    ds_load_b32 v1, v0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    s_wait_dscnt 0x0
+; GFX1250-NEXT:    ds_store_b32 v0, v1
+; GFX1250-NEXT:    s_endpgm
+  store i32 1, ptr addrspace(3) %lds, align 4
+  fence syncscope("workgroup") release
+  %v = load i32, ptr addrspace(3) %lds, align 4
+  store i32 %v, ptr addrspace(3) %lds, align 4
+  ret void
+}
+
+define amdgpu_kernel void @lds_async_dma_wg_fence_release_single32(ptr addrspace(1) %g, ptr addrspace(3) %lds) #0 {
+; GFX1250-LABEL: lds_async_dma_wg_fence_release_single32:
+; GFX1250:       ; %bb.0:
+; GFX1250-NEXT:    s_setreg_imm32_b32 hwreg(HW_REG_WAVE_MODE, 25, 1), 1 ; msbs: dst=0 src0=0 src1=0 src2=0
+; GFX1250-NEXT:    s_mov_b64 s[64:65], 0
+; GFX1250-NEXT:    v_nop
+; GFX1250-NEXT:    global_prefetch_b8 v0, s[64:65] scope:SCOPE_SE
+; GFX1250-NEXT:    s_load_b64 s[0:1], s[4:5], 0x24 nv
+; GFX1250-NEXT:    s_wait_kmcnt 0x0
+; GFX1250-NEXT:    s_load_b32 s0, s[4:5], 0x2c nv
+; GFX1250-NEXT:    v_mov_b32_e32 v1, 0
+; GFX1250-NEXT:    s_load_b64 s[2:3], s[4:5], 0x24 nv
+; GFX1250-NEXT:    s_wait_kmcnt 0x0
+; GFX1250-NEXT:    s_load_b32 s0, s[4:5], 0x2c nv
+; GFX1250-NEXT:    s_wait_kmcnt 0x0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    global_load_async_to_lds_b32 v0, v1, s[2:3]
+; GFX1250-NEXT:    s_wait_storecnt 0x0
+; GFX1250-NEXT:    s_wait_loadcnt_dscnt 0x0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    ds_load_b32 v1, v0
+; GFX1250-NEXT:    v_mov_b32_e32 v0, s0
+; GFX1250-NEXT:    s_wait_dscnt 0x0
+; GFX1250-NEXT:    ds_store_b32 v0, v1
+; GFX1250-NEXT:    s_endpgm
+  call void @llvm.amdgcn.global.load.async.to.lds.b32(ptr addrspace(1) %g, ptr addrspace(3) %lds, i32 0, i32 0)
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zGoldthorpe wrote:

Sorry, I'm not really sure what you're trying to say here...

https://github.com/llvm/llvm-project/pull/224064