[llvm] [AMDGPU] CodeGen for GFX12 VBUFFER instructions (PR #75492)

[Jay Foad via llvm-commits]

================
@@ -1,10 +1,105 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -global-isel -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
+; RUN: llc -global-isel -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX9 %s
+; RUN: llc -global-isel -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx1200 -verify-machineinstrs < %s | FileCheck -check-prefixes=GFX12 %s
 
 ; Check lowering of some large extractelement that use the stack
 ; instead of register indexing.
 
 define i32 @v_extract_v64i32_varidx(ptr addrspace(1) %ptr, i32 %idx) {
+; GFX9-LABEL: v_extract_v64i32_varidx:
+; GFX9:       ; %bb.0:
+; GFX9-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GFX9-NEXT:    v_and_b32_e32 v2, 63, v2
+; GFX9-NEXT:    v_lshlrev_b32_e32 v2, 2, v2
+; GFX9-NEXT:    v_ashrrev_i32_e32 v3, 31, v2
+; GFX9-NEXT:    v_add_co_u32_e32 v0, vcc, v0, v2
+; GFX9-NEXT:    v_addc_co_u32_e32 v1, vcc, v1, v3, vcc
+; GFX9-NEXT:    global_load_dword v0, v[0:1], off
+; GFX9-NEXT:    s_waitcnt vmcnt(0)
+; GFX9-NEXT:    s_setpc_b64 s[30:31]
+;
+; GFX12-LABEL: v_extract_v64i32_varidx:
+; GFX12:       ; %bb.0:
+; GFX12-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GFX12-NEXT:    v_and_b32_e32 v2, 63, v2
+; GFX12-NEXT:    s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_1)
+; GFX12-NEXT:    v_lshlrev_b32_e32 v2, 2, v2
+; GFX12-NEXT:    v_ashrrev_i32_e32 v3, 31, v2
+; GFX12-NEXT:    v_add_co_u32 v0, vcc_lo, v0, v2
+; GFX12-NEXT:    s_delay_alu instid0(VALU_DEP_2)
+; GFX12-NEXT:    v_add_co_ci_u32_e32 v1, vcc_lo, v1, v3, vcc_lo
+; GFX12-NEXT:    global_load_b32 v0, v[0:1], off
+; GFX12-NEXT:    s_waitcnt vmcnt(0)
+; GFX12-NEXT:    s_setpc_b64 s[30:31]
+; GCN-GFX12-LABEL: v_extract_v64i32_varidx:
----------------
jayfoad wrote:

These prefixes look wrong. I removed them in 26ff659c39a6.

https://github.com/llvm/llvm-project/pull/75492