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llvm/test/CodeGen/AMDGPU/flat-address-space.ll
Tom Stellard 1a633d108a AMDGPU/SI: Don't emit multi-dword flat memory ops when they might access scratch 
Summary:
A single flat memory operations that might access the scratch buffer
can only access MaxPrivateElementSize bytes.

Reviewers: arsenm

Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, tony-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D25788

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285198 91177308-0d34-0410-b5e6-96231b3b80d8
2016-10-26 14:38:47 +00:00

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6.3 KiB
LLVM
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; RUN: llc -O0 -mtriple=amdgcn-mesa-mesa3d -mcpu=bonaire < %s | FileCheck %s
; RUN: llc -O0 -mtriple=amdgcn-mesa-mesa3d -mcpu=tonga < %s | FileCheck %s
; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=fiji < %s | FileCheck -check-prefixes=CHECK,HSA %s
; Disable optimizations in case there are optimizations added that
; specialize away generic pointer accesses.
; These testcases might become useless when there are optimizations to
; remove generic pointers.
; CHECK-LABEL: {{^}}store_flat_i32:
; CHECK-DAG: s_load_dwordx2 s{{\[}}[[LO_SREG:[0-9]+]]:[[HI_SREG:[0-9]+]]],
; CHECK-DAG: s_load_dword s[[SDATA:[0-9]+]],
; CHECK: s_waitcnt lgkmcnt(0)
; CHECK-DAG: v_mov_b32_e32 v[[DATA:[0-9]+]], s[[SDATA]]
; CHECK-DAG: v_mov_b32_e32 v[[LO_VREG:[0-9]+]], s[[LO_SREG]]
; CHECK-DAG: v_mov_b32_e32 v[[HI_VREG:[0-9]+]], s[[HI_SREG]]
; CHECK: flat_store_dword v{{\[}}[[LO_VREG]]:[[HI_VREG]]{{\]}}, v[[DATA]]
define void @store_flat_i32(i32 addrspace(1)* %gptr, i32 %x) #0 {
%fptr = addrspacecast i32 addrspace(1)* %gptr to i32 addrspace(4)*
store i32 %x, i32 addrspace(4)* %fptr, align 4
ret void
}
; CHECK-LABEL: {{^}}store_flat_i64:
; CHECK: flat_store_dwordx2
define void @store_flat_i64(i64 addrspace(1)* %gptr, i64 %x) #0 {
%fptr = addrspacecast i64 addrspace(1)* %gptr to i64 addrspace(4)*
store i64 %x, i64 addrspace(4)* %fptr, align 8
ret void
}
; CHECK-LABEL: {{^}}store_flat_v4i32:
; CHECK: flat_store_dwordx4
define void @store_flat_v4i32(<4 x i32> addrspace(1)* %gptr, <4 x i32> %x) #0 {
%fptr = addrspacecast <4 x i32> addrspace(1)* %gptr to <4 x i32> addrspace(4)*
store <4 x i32> %x, <4 x i32> addrspace(4)* %fptr, align 16
ret void
}
; CHECK-LABEL: {{^}}store_flat_trunc_i16:
; CHECK: flat_store_short
define void @store_flat_trunc_i16(i16 addrspace(1)* %gptr, i32 %x) #0 {
%fptr = addrspacecast i16 addrspace(1)* %gptr to i16 addrspace(4)*
%y = trunc i32 %x to i16
store i16 %y, i16 addrspace(4)* %fptr, align 2
ret void
}
; CHECK-LABEL: {{^}}store_flat_trunc_i8:
; CHECK: flat_store_byte
define void @store_flat_trunc_i8(i8 addrspace(1)* %gptr, i32 %x) #0 {
%fptr = addrspacecast i8 addrspace(1)* %gptr to i8 addrspace(4)*
%y = trunc i32 %x to i8
store i8 %y, i8 addrspace(4)* %fptr, align 2
ret void
}
; CHECK-LABEL: load_flat_i32:
; CHECK: flat_load_dword
define void @load_flat_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i32 addrspace(1)* %gptr to i32 addrspace(4)*
%fload = load i32, i32 addrspace(4)* %fptr, align 4
store i32 %fload, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: load_flat_i64:
; CHECK: flat_load_dwordx2
define void @load_flat_i64(i64 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i64 addrspace(1)* %gptr to i64 addrspace(4)*
%fload = load i64, i64 addrspace(4)* %fptr, align 8
store i64 %fload, i64 addrspace(1)* %out, align 8
ret void
}
; CHECK-LABEL: load_flat_v4i32:
; CHECK: flat_load_dwordx4
define void @load_flat_v4i32(<4 x i32> addrspace(1)* noalias %out, <4 x i32> addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast <4 x i32> addrspace(1)* %gptr to <4 x i32> addrspace(4)*
%fload = load <4 x i32>, <4 x i32> addrspace(4)* %fptr, align 32
store <4 x i32> %fload, <4 x i32> addrspace(1)* %out, align 8
ret void
}
; CHECK-LABEL: sextload_flat_i8:
; CHECK: flat_load_sbyte
define void @sextload_flat_i8(i32 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i8 addrspace(1)* %gptr to i8 addrspace(4)*
%fload = load i8, i8 addrspace(4)* %fptr, align 4
%ext = sext i8 %fload to i32
store i32 %ext, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: zextload_flat_i8:
; CHECK: flat_load_ubyte
define void @zextload_flat_i8(i32 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i8 addrspace(1)* %gptr to i8 addrspace(4)*
%fload = load i8, i8 addrspace(4)* %fptr, align 4
%ext = zext i8 %fload to i32
store i32 %ext, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: sextload_flat_i16:
; CHECK: flat_load_sshort
define void @sextload_flat_i16(i32 addrspace(1)* noalias %out, i16 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i16 addrspace(1)* %gptr to i16 addrspace(4)*
%fload = load i16, i16 addrspace(4)* %fptr, align 4
%ext = sext i16 %fload to i32
store i32 %ext, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: zextload_flat_i16:
; CHECK: flat_load_ushort
define void @zextload_flat_i16(i32 addrspace(1)* noalias %out, i16 addrspace(1)* noalias %gptr) #0 {
%fptr = addrspacecast i16 addrspace(1)* %gptr to i16 addrspace(4)*
%fload = load i16, i16 addrspace(4)* %fptr, align 4
%ext = zext i16 %fload to i32
store i32 %ext, i32 addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: flat_scratch_unaligned_load:
; CHECK: flat_load_ubyte
; CHECK: flat_load_ubyte
; CHECK: flat_load_ubyte
; CHECK: flat_load_ubyte
define void @flat_scratch_unaligned_load() {
%scratch = alloca i32
%fptr = addrspacecast i32* %scratch to i32 addrspace(4)*
%ld = load volatile i32, i32 addrspace(4)* %fptr, align 1
ret void
}
; CHECK-LABEL: flat_scratch_unaligned_store:
; CHECK: flat_store_byte
; CHECK: flat_store_byte
; CHECK: flat_store_byte
; CHECK: flat_store_byte
define void @flat_scratch_unaligned_store() {
%scratch = alloca i32
%fptr = addrspacecast i32* %scratch to i32 addrspace(4)*
store volatile i32 0, i32 addrspace(4)* %fptr, align 1
ret void
}
; CHECK-LABEL: flat_scratch_multidword_load:
; HSA: flat_load_dword
; HSA: flat_load_dword
; FIXME: These tests are broken for os = mesa3d, becasue it doesn't initialize flat_scr
define void @flat_scratch_multidword_load() {
%scratch = alloca <2 x i32>
%fptr = addrspacecast <2 x i32>* %scratch to <2 x i32> addrspace(4)*
%ld = load volatile <2 x i32>, <2 x i32> addrspace(4)* %fptr
ret void
}
; CHECK-LABEL: flat_scratch_multidword_store:
; HSA: flat_store_dword
; HSA: flat_store_dword
; FIXME: These tests are broken for os = mesa3d, becasue it doesn't initialize flat_scr
define void @flat_scratch_multidword_store() {
%scratch = alloca <2 x i32>
%fptr = addrspacecast <2 x i32>* %scratch to <2 x i32> addrspace(4)*
store volatile <2 x i32> zeroinitializer, <2 x i32> addrspace(4)* %fptr
ret void
}
attributes #0 = { nounwind }
attributes #1 = { nounwind convergent }
attributes #3 = { nounwind readnone }
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