llvm/test/CodeGen/AMDGPU/combine-vload-extract.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgpu9.0a < %s | FileCheck -check-prefix=GCN %s

define amdgpu_kernel void @vectorLoadCombine(ptr %in, ptr %out) {
; GCN-LABEL: vectorLoadCombine:
; GCN:       ; %bb.0: ; %entry
; GCN-NEXT:    s_load_dwordx4 s[0:3], s[4:5], 0x24
; GCN-NEXT:    s_waitcnt lgkmcnt(0)
; GCN-NEXT:    v_mov_b32_e32 v0, s0
; GCN-NEXT:    v_mov_b32_e32 v1, s1
; GCN-NEXT:    flat_load_dword v2, v[0:1]
; GCN-NEXT:    v_mov_b32_e32 v0, s2
; GCN-NEXT:    v_mov_b32_e32 v1, s3
; GCN-NEXT:    s_waitcnt vmcnt(0) lgkmcnt(0)
; GCN-NEXT:    flat_store_dword v[0:1], v2
; GCN-NEXT:    s_endpgm
entry:
  %0 = load <4 x i8>, ptr %in, align 4
  %1 = extractelement <4 x i8> %0, i32 0
  %2 = extractelement <4 x i8> %0, i32 1
  %3 = extractelement <4 x i8> %0, i32 2
  %4 = extractelement <4 x i8> %0, i32 3
  %zext0 = zext i8 %1 to i32
  %zext1 = zext i8 %2 to i32
  %shift1 = shl nuw nsw i32 %zext1, 8
  %insert1 = or i32 %shift1, %zext0
  %zext2 = zext i8 %3 to i32
  %shift2 = shl nuw nsw i32 %zext2, 16
  %insert2 = or i32 %insert1, %shift2
  %zext3 = zext i8 %4 to i32
  %shift3 = shl nuw i32 %zext3, 24
  %insert3 = or i32 %insert2, %shift3
  store i32 %insert3, ptr %out
  ret void
}

define amdgpu_kernel void @vectorLoadShuffle(ptr %in, ptr %out) {
; GCN-LABEL: vectorLoadShuffle:
; GCN:       ; %bb.0: ; %entry
; GCN-NEXT:    s_load_dwordx4 s[0:3], s[4:5], 0x24
; GCN-NEXT:    s_waitcnt lgkmcnt(0)
; GCN-NEXT:    v_mov_b32_e32 v0, s0
; GCN-NEXT:    v_mov_b32_e32 v1, s1
; GCN-NEXT:    flat_load_dword v2, v[0:1]
; GCN-NEXT:    s_mov_b32 s0, 0x7050604
; GCN-NEXT:    v_mov_b32_e32 v0, s2
; GCN-NEXT:    v_mov_b32_e32 v1, s3
; GCN-NEXT:    s_waitcnt vmcnt(0) lgkmcnt(0)
; GCN-NEXT:    v_perm_b32 v2, v2, v2, s0
; GCN-NEXT:    flat_store_dword v[0:1], v2
; GCN-NEXT:    s_endpgm
entry:
  %0 = load <4 x i8>, ptr %in, align 4
  %1 = extractelement <4 x i8> %0, i32 0
  %2 = extractelement <4 x i8> %0, i32 1
  %3 = extractelement <4 x i8> %0, i32 2
  %4 = extractelement <4 x i8> %0, i32 3
  %zext0 = zext i8 %1 to i32
  %zext1 = zext i8 %3 to i32
  %shift1 = shl nuw nsw i32 %zext1, 8
  %insert1 = or i32 %shift1, %zext0
  %zext2 = zext i8 %2 to i32
  %shift2 = shl nuw nsw i32 %zext2, 16
  %insert2 = or i32 %insert1, %shift2
  %zext3 = zext i8 %4 to i32
  %shift3 = shl nuw i32 %zext3, 24
  %insert3 = or i32 %insert2, %shift3
  store i32 %insert3, ptr %out
  ret void
}
define i32 @load_2xi16_combine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_2xi16_combine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dword v0, v[0:1], off
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 1
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %zext.0 = zext i16 %p.0 to i32
  %zext.1 = zext i16 %p.1 to i32
  %shl.1 = shl i32 %zext.1, 16
  %or = or i32 %zext.0, %shl.1
  ret i32 %or
}

define i32 @load_2xi16_noncombine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_2xi16_noncombine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_ushort v2, v[0:1], off
; GCN-NEXT:    global_load_ushort v3, v[0:1], off offset:4
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    v_lshl_or_b32 v0, v3, 16, v2
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 2
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %zext.0 = zext i16 %p.0 to i32
  %zext.1 = zext i16 %p.1 to i32
  %shl.1 = shl i32 %zext.1, 16
  %or = or i32 %zext.0, %shl.1
  ret i32 %or
}

define i64 @load_2xi32_combine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_2xi32_combine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dwordx2 v[0:1], v[0:1], off
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i32, ptr addrspace(1) %p, i32 1
  %p.0 = load i32, ptr addrspace(1) %p, align 4
  %p.1 = load i32, ptr addrspace(1) %gep.p, align 4
  %zext.0 = zext i32 %p.0 to i64
  %zext.1 = zext i32 %p.1 to i64
  %shl.1 = shl i64 %zext.1, 32
  %or = or i64 %zext.0, %shl.1
  ret i64 %or
}

define i64 @load_2xi32_noncombine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_2xi32_noncombine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dword v2, v[0:1], off
; GCN-NEXT:    global_load_dword v3, v[0:1], off offset:8
; GCN-NEXT:    s_waitcnt vmcnt(1)
; GCN-NEXT:    v_mov_b32_e32 v0, v2
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    v_mov_b32_e32 v1, v3
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i32, ptr addrspace(1) %p, i32 2
  %p.0 = load i32, ptr addrspace(1) %p, align 4
  %p.1 = load i32, ptr addrspace(1) %gep.p, align 4
  %zext.0 = zext i32 %p.0 to i64
  %zext.1 = zext i32 %p.1 to i64
  %shl.1 = shl i64 %zext.1, 32
  %or = or i64 %zext.0, %shl.1
  ret i64 %or
}

define i64 @load_4xi16_combine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_4xi16_combine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dwordx2 v[0:1], v[0:1], off
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 1
  %gep.2p = getelementptr i16, ptr addrspace(1) %p, i32 2
  %gep.3p = getelementptr i16, ptr addrspace(1) %p, i32 3
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %p.2 = load i16, ptr addrspace(1) %gep.2p, align 4
  %p.3 = load i16, ptr addrspace(1) %gep.3p, align 4
  %zext.0 = zext i16 %p.0 to i64
  %zext.1 = zext i16 %p.1 to i64
  %zext.2 = zext i16 %p.2 to i64
  %zext.3 = zext i16 %p.3 to i64
  %shl.1 = shl i64 %zext.1, 16
  %or.1 = or i64 %zext.0, %shl.1
  %shl.2 = shl i64 %zext.2, 32
  %or.2 = or i64 %or.1, %shl.2
  %shl.3 = shl i64 %zext.3, 48
  %or.3 = or i64 %or.2, %shl.3
  ret i64 %or.3
}


define i64 @load_4xi16_noncombine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_4xi16_noncombine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dwordx2 v[2:3], v[0:1], off
; GCN-NEXT:    s_mov_b32 s4, 0xffff
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    v_and_b32_e32 v1, 0xffff0000, v2
; GCN-NEXT:    v_bfi_b32 v0, s4, v2, v3
; GCN-NEXT:    v_or_b32_sdwa v1, v3, v1 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_0 src1_sel:DWORD
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 3
  %gep.2p = getelementptr i16, ptr addrspace(1) %p, i32 2
  %gep.3p = getelementptr i16, ptr addrspace(1) %p, i32 1
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %p.2 = load i16, ptr addrspace(1) %gep.2p, align 4
  %p.3 = load i16, ptr addrspace(1) %gep.3p, align 4
  %zext.0 = zext i16 %p.0 to i64
  %zext.1 = zext i16 %p.1 to i64
  %zext.2 = zext i16 %p.2 to i64
  %zext.3 = zext i16 %p.3 to i64
  %shl.1 = shl i64 %zext.1, 16
  %or.1 = or i64 %zext.0, %shl.1
  %shl.2 = shl i64 %zext.2, 32
  %or.2 = or i64 %or.1, %shl.2
  %shl.3 = shl i64 %zext.3, 48
  %or.3 = or i64 %or.2, %shl.3
  ret i64 %or.3
}

define i64 @load_3xi16_combine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_3xi16_combine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_dword v2, v[0:1], off
; GCN-NEXT:    global_load_ushort v3, v[0:1], off offset:4
; GCN-NEXT:    s_waitcnt vmcnt(1)
; GCN-NEXT:    v_mov_b32_e32 v0, v2
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    v_mov_b32_e32 v1, v3
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 1
  %gep.2p = getelementptr i16, ptr addrspace(1) %p, i32 2
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %p.2 = load i16, ptr addrspace(1) %gep.2p, align 4
  %zext.0 = zext i16 %p.0 to i64
  %zext.1 = zext i16 %p.1 to i64
  %zext.2 = zext i16 %p.2 to i64
  %shl.1 = shl i64 %zext.1, 16
  %or.1 = or i64 %zext.0, %shl.1
  %shl.2 = shl i64 %zext.2, 32
  %or.2 = or i64 %or.1, %shl.2
  ret i64 %or.2
}

define i64 @load_3xi16_noncombine(ptr addrspace(1) %p) #0 {
; GCN-LABEL: load_3xi16_noncombine:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    global_load_ushort v2, v[0:1], off
; GCN-NEXT:    global_load_dword v3, v[0:1], off offset:4
; GCN-NEXT:    s_mov_b32 s4, 0x3020504
; GCN-NEXT:    s_waitcnt vmcnt(0)
; GCN-NEXT:    v_perm_b32 v0, v2, v3, s4
; GCN-NEXT:    v_and_b32_e32 v1, 0xffff, v3
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %gep.p = getelementptr i16, ptr addrspace(1) %p, i32 3
  %gep.2p = getelementptr i16, ptr addrspace(1) %p, i32 2
  %p.0 = load i16, ptr addrspace(1) %p, align 4
  %p.1 = load i16, ptr addrspace(1) %gep.p, align 4
  %p.2 = load i16, ptr addrspace(1) %gep.2p, align 4
  %zext.0 = zext i16 %p.0 to i64
  %zext.1 = zext i16 %p.1 to i64
  %zext.2 = zext i16 %p.2 to i64
  %shl.1 = shl i64 %zext.1, 16
  %or.1 = or i64 %zext.0, %shl.1
  %shl.2 = shl i64 %zext.2, 32
  %or.2 = or i64 %or.1, %shl.2
  ret i64 %or.2
}