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llvm-mirror/test/CodeGen/AMDGPU/sub.ll
Matt Arsenault d7e3e9c393 AMDGPU: Select VOP3 form of sub
The VOP3 form should always be the preferred selection form to be
shrunk later.

The r600 sub test needs to be split out because it asserts on the
arguments in the new test during the calling convention lowering.

llvm-svn: 359899
2019-05-03 15:37:07 +00:00

242 lines
9.4 KiB
LLVM

; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,SI %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,VI,GFX89 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9,GFX89 %s
declare i32 @llvm.amdgcn.workitem.id.x() nounwind readnone speculatable
; GCN-LABEL: {{^}}s_sub_i32:
; GCN: s_load_dwordx2
; GCN: s_load_dwordx2 s{{\[}}[[A:[0-9]+]]:[[B:[0-9]+]]{{\]}}
; GCN: s_sub_i32 s{{[0-9]+}}, s[[A]], s[[B]]
define amdgpu_kernel void @s_sub_i32(i32 addrspace(1)* %out, i32 %a, i32 %b) {
%result = sub i32 %a, %b
store i32 %result, i32 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}s_sub_imm_i32:
; GCN: s_load_dword [[A:s[0-9]+]]
; GCN: s_sub_i32 s{{[0-9]+}}, 0x4d2, [[A]]
define amdgpu_kernel void @s_sub_imm_i32(i32 addrspace(1)* %out, i32 %a) {
%result = sub i32 1234, %a
store i32 %result, i32 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_i32:
; SI: v_subrev_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
define amdgpu_kernel void @test_sub_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%b_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1
%a = load i32, i32 addrspace(1)* %in
%b = load i32, i32 addrspace(1)* %b_ptr
%result = sub i32 %a, %b
store i32 %result, i32 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_imm_i32:
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc, 0x7b, v{{[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+}}, 0x7b, v{{[0-9]+}}
define amdgpu_kernel void @test_sub_imm_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%a = load i32, i32 addrspace(1)* %in
%result = sub i32 123, %a
store i32 %result, i32 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_v2i32:
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
define amdgpu_kernel void @test_sub_v2i32(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) {
%b_ptr = getelementptr <2 x i32>, <2 x i32> addrspace(1)* %in, i32 1
%a = load <2 x i32>, <2 x i32> addrspace(1) * %in
%b = load <2 x i32>, <2 x i32> addrspace(1) * %b_ptr
%result = sub <2 x i32> %a, %b
store <2 x i32> %result, <2 x i32> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_v4i32:
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; SI: v_sub_i32_e32 v{{[0-9]+, vcc, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_sub_u32_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
define amdgpu_kernel void @test_sub_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {
%b_ptr = getelementptr <4 x i32>, <4 x i32> addrspace(1)* %in, i32 1
%a = load <4 x i32>, <4 x i32> addrspace(1) * %in
%b = load <4 x i32>, <4 x i32> addrspace(1) * %b_ptr
%result = sub <4 x i32> %a, %b
store <4 x i32> %result, <4 x i32> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_i16:
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; GFX89: v_sub_u16_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
define amdgpu_kernel void @test_sub_i16(i16 addrspace(1)* %out, i16 addrspace(1)* %in) {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%gep = getelementptr i16, i16 addrspace(1)* %in, i32 %tid
%b_ptr = getelementptr i16, i16 addrspace(1)* %gep, i32 1
%a = load volatile i16, i16 addrspace(1)* %gep
%b = load volatile i16, i16 addrspace(1)* %b_ptr
%result = sub i16 %a, %b
store i16 %result, i16 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_v2i16:
; VI: v_sub_u16_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; VI: v_sub_u16_sdwa v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_pk_sub_i16
define amdgpu_kernel void @test_sub_v2i16(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%gep = getelementptr <2 x i16>, <2 x i16> addrspace(1)* %in, i32 %tid
%b_ptr = getelementptr <2 x i16>, <2 x i16> addrspace(1)* %gep, i16 1
%a = load <2 x i16>, <2 x i16> addrspace(1)* %gep
%b = load <2 x i16>, <2 x i16> addrspace(1)* %b_ptr
%result = sub <2 x i16> %a, %b
store <2 x i16> %result, <2 x i16> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}test_sub_v4i16:
; VI: v_sub_u16_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; VI: v_sub_u16_sdwa v{{[0-9]+, v[0-9]+, v[0-9]+}}
; VI: v_sub_u16_e32 v{{[0-9]+, v[0-9]+, v[0-9]+}}
; VI: v_sub_u16_sdwa v{{[0-9]+, v[0-9]+, v[0-9]+}}
; GFX9: v_pk_sub_i16
; GFX9: v_pk_sub_i16
define amdgpu_kernel void @test_sub_v4i16(<4 x i16> addrspace(1)* %out, <4 x i16> addrspace(1)* %in) {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%gep = getelementptr <4 x i16>, <4 x i16> addrspace(1)* %in, i32 %tid
%b_ptr = getelementptr <4 x i16>, <4 x i16> addrspace(1)* %gep, i16 1
%a = load <4 x i16>, <4 x i16> addrspace(1) * %gep
%b = load <4 x i16>, <4 x i16> addrspace(1) * %b_ptr
%result = sub <4 x i16> %a, %b
store <4 x i16> %result, <4 x i16> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}s_sub_i64:
; GCN: s_sub_u32
; GCN: s_subb_u32
define amdgpu_kernel void @s_sub_i64(i64 addrspace(1)* noalias %out, i64 %a, i64 %b) nounwind {
%result = sub i64 %a, %b
store i64 %result, i64 addrspace(1)* %out, align 8
ret void
}
; GCN-LABEL: {{^}}v_sub_i64:
; SI: v_sub_i32_e32
; SI: v_subb_u32_e32
; VI: v_sub_u32_e32
; VI: v_subb_u32_e32
; GFX9: v_sub_co_u32_e32
; GFX9: v_subb_co_u32_e32
define amdgpu_kernel void @v_sub_i64(i64 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %inA, i64 addrspace(1)* noalias %inB) nounwind {
%tid = call i32 @llvm.amdgcn.workitem.id.x() readnone
%a_ptr = getelementptr i64, i64 addrspace(1)* %inA, i32 %tid
%b_ptr = getelementptr i64, i64 addrspace(1)* %inB, i32 %tid
%a = load i64, i64 addrspace(1)* %a_ptr
%b = load i64, i64 addrspace(1)* %b_ptr
%result = sub i64 %a, %b
store i64 %result, i64 addrspace(1)* %out, align 8
ret void
}
; GCN-LABEL: {{^}}v_test_sub_v2i64:
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
define amdgpu_kernel void @v_test_sub_v2i64(<2 x i64> addrspace(1)* %out, <2 x i64> addrspace(1)* noalias %inA, <2 x i64> addrspace(1)* noalias %inB) {
%tid = call i32 @llvm.amdgcn.workitem.id.x() readnone
%a_ptr = getelementptr <2 x i64>, <2 x i64> addrspace(1)* %inA, i32 %tid
%b_ptr = getelementptr <2 x i64>, <2 x i64> addrspace(1)* %inB, i32 %tid
%a = load <2 x i64>, <2 x i64> addrspace(1)* %a_ptr
%b = load <2 x i64>, <2 x i64> addrspace(1)* %b_ptr
%result = sub <2 x i64> %a, %b
store <2 x i64> %result, <2 x i64> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}v_test_sub_v4i64:
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; SI: v_sub_i32_e32 v{{[0-9]+}}, vcc,
; SI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_sub_u32_e32 v{{[0-9]+}}, vcc,
; VI: v_subb_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_sub_co_u32_e32 v{{[0-9]+}}, vcc,
; GFX9: v_subb_co_u32_e32 v{{[0-9]+}}, vcc,
define amdgpu_kernel void @v_test_sub_v4i64(<4 x i64> addrspace(1)* %out, <4 x i64> addrspace(1)* noalias %inA, <4 x i64> addrspace(1)* noalias %inB) {
%tid = call i32 @llvm.amdgcn.workitem.id.x() readnone
%a_ptr = getelementptr <4 x i64>, <4 x i64> addrspace(1)* %inA, i32 %tid
%b_ptr = getelementptr <4 x i64>, <4 x i64> addrspace(1)* %inB, i32 %tid
%a = load <4 x i64>, <4 x i64> addrspace(1)* %a_ptr
%b = load <4 x i64>, <4 x i64> addrspace(1)* %b_ptr
%result = sub <4 x i64> %a, %b
store <4 x i64> %result, <4 x i64> addrspace(1)* %out
ret void
}
; Make sure the VOP3 form of sub is initially selected. Otherwise pair
; of opies from/to VCC would be necessary
; GCN-LABEL: {{^}}sub_select_vop3:
; SI: v_subrev_i32_e64 v0, s[0:1], s0, v0
; VI: v_subrev_u32_e64 v0, s[0:1], s0, v0
; GFX9: v_subrev_u32_e32 v0, s0, v0
; GCN: ; def vcc
; GCN: ds_write_b32
; GCN: ; use vcc
define amdgpu_ps void @sub_select_vop3(i32 inreg %s, i32 %v) {
%vcc = call i64 asm sideeffect "; def vcc", "={vcc}"()
%sub = sub i32 %v, %s
store i32 %sub, i32 addrspace(3)* undef
call void asm sideeffect "; use vcc", "{vcc}"(i64 %vcc)
ret void
}