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clang-p2996/llvm/test/CodeGen/AMDGPU/ctlz_zero_undef.ll
Matt Arsenault 5d8eb25e78 AMDGPU: Use unsigned compare for eq/ne 
For some reason there are both of these available, except
for scalar 64-bit compares which only has u64. I'm not sure
why there are both (I'm guessing it's for the one bit inputs we
don't use), but for consistency always using the
unsigned one.

llvm-svn: 282832
2016-09-30 01:50:20 +00:00

269 lines
11 KiB
LLVM
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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
declare i8 @llvm.ctlz.i8(i8, i1) nounwind readnone
declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
declare <2 x i32> @llvm.ctlz.v2i32(<2 x i32>, i1) nounwind readnone
declare <4 x i32> @llvm.ctlz.v4i32(<4 x i32>, i1) nounwind readnone
declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
declare <2 x i64> @llvm.ctlz.v2i64(<2 x i64>, i1) nounwind readnone
declare <4 x i64> @llvm.ctlz.v4i64(<4 x i64>, i1) nounwind readnone
declare i32 @llvm.r600.read.tidig.x() nounwind readnone
; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i32:
; SI: s_load_dword [[VAL:s[0-9]+]],
; SI: s_flbit_i32_b32 [[SRESULT:s[0-9]+]], [[VAL]]
; SI: v_mov_b32_e32 [[VRESULT:v[0-9]+]], [[SRESULT]]
; SI: buffer_store_dword [[VRESULT]],
; SI: s_endpgm
; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+\.[XYZW]]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
define void @s_ctlz_zero_undef_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind {
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
store i32 %ctlz, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32:
; SI: buffer_load_dword [[VAL:v[0-9]+]],
; SI: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]]
; SI: buffer_store_dword [[RESULT]],
; SI: s_endpgm
; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+\.[XYZW]]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
define void @v_ctlz_zero_undef_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr, align 4
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
store i32 %ctlz, i32 addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_v2i32:
; SI: buffer_load_dwordx2
; SI: v_ffbh_u32_e32
; SI: v_ffbh_u32_e32
; SI: buffer_store_dwordx2
; SI: s_endpgm
; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+]]{{\.[XYZW]}}
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
define void @v_ctlz_zero_undef_v2i32(<2 x i32> addrspace(1)* noalias %out, <2 x i32> addrspace(1)* noalias %valptr) nounwind {
%val = load <2 x i32>, <2 x i32> addrspace(1)* %valptr, align 8
%ctlz = call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %val, i1 true) nounwind readnone
store <2 x i32> %ctlz, <2 x i32> addrspace(1)* %out, align 8
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_v4i32:
; SI: buffer_load_dwordx4
; SI: v_ffbh_u32_e32
; SI: v_ffbh_u32_e32
; SI: v_ffbh_u32_e32
; SI: v_ffbh_u32_e32
; SI: buffer_store_dwordx4
; SI: s_endpgm
; EG: MEM_RAT_CACHELESS STORE_RAW [[RESULT:T[0-9]+]]{{\.[XYZW]}}
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
; EG: FFBH_UINT {{\*? *}}[[RESULT]]
define void @v_ctlz_zero_undef_v4i32(<4 x i32> addrspace(1)* noalias %out, <4 x i32> addrspace(1)* noalias %valptr) nounwind {
%val = load <4 x i32>, <4 x i32> addrspace(1)* %valptr, align 16
%ctlz = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %val, i1 true) nounwind readnone
store <4 x i32> %ctlz, <4 x i32> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i8:
; SI: buffer_load_ubyte [[VAL:v[0-9]+]],
; SI: v_ffbh_u32_e32 [[FFBH:v[0-9]+]], [[VAL]]
; SI: v_add_i32_e32 [[RESULT:v[0-9]+]], vcc, 0xffffffe8, [[FFBH]]
; SI: buffer_store_byte [[RESULT]],
define void @v_ctlz_zero_undef_i8(i8 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %valptr) nounwind {
%val = load i8, i8 addrspace(1)* %valptr
%ctlz = call i8 @llvm.ctlz.i8(i8 %val, i1 true) nounwind readnone
store i8 %ctlz, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64:
; SI: s_load_dwordx2 s{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}, s{{\[[0-9]+:[0-9]+\]}}, {{0xb|0x2c}}
; SI-DAG: v_cmp_eq_u32_e64 vcc, s[[HI]], 0{{$}}
; SI-DAG: s_flbit_i32_b32 [[FFBH_LO:s[0-9]+]], s[[LO]]
; SI-DAG: s_add_i32 [[ADD:s[0-9]+]], [[FFBH_LO]], 32
; SI-DAG: s_flbit_i32_b32 [[FFBH_HI:s[0-9]+]], s[[HI]]
; SI-DAG: v_mov_b32_e32 [[VFFBH_LO:v[0-9]+]], [[FFBH_LO]]
; SI-DAG: v_mov_b32_e32 [[VFFBH_HI:v[0-9]+]], [[FFBH_HI]]
; SI-DAG: v_cndmask_b32_e32 v[[CTLZ:[0-9]+]], [[VFFBH_HI]], [[VFFBH_LO]]
; SI-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}}
; SI: {{buffer|flat}}_store_dwordx2 v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}}
define void @s_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 %val) nounwind {
%ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
store i64 %ctlz, i64 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64_trunc:
define void @s_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 %val) nounwind {
%ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
%trunc = trunc i64 %ctlz to i32
store i32 %trunc, i32 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64:
; SI-DAG: {{buffer|flat}}_load_dwordx2 v{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}
; SI-DAG: v_cmp_eq_u32_e64 [[CMPHI:s\[[0-9]+:[0-9]+\]]], 0, v[[HI]]
; SI-DAG: v_ffbh_u32_e32 [[FFBH_LO:v[0-9]+]], v[[LO]]
; SI-DAG: v_add_i32_e32 [[ADD:v[0-9]+]], vcc, 32, [[FFBH_LO]]
; SI-DAG: v_ffbh_u32_e32 [[FFBH_HI:v[0-9]+]], v[[HI]]
; SI-DAG: v_cndmask_b32_e64 v[[CTLZ:[0-9]+]], [[FFBH_HI]], [[FFBH_LO]]
; SI-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}}
; SI: {{buffer|flat}}_store_dwordx2 {{.*}}v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}}
define void @v_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x()
%in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid
%out.gep = getelementptr i64, i64 addrspace(1)* %out, i32 %tid
%val = load i64, i64 addrspace(1)* %in.gep
%ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
store i64 %ctlz, i64 addrspace(1)* %out.gep
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64_trunc:
define void @v_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x()
%in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid
%out.gep = getelementptr i32, i32 addrspace(1)* %out, i32 %tid
%val = load i64, i64 addrspace(1)* %in.gep
%ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
%trunc = trunc i64 %ctlz to i32
store i32 %trunc, i32 addrspace(1)* %out.gep
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_neg1:
; SI: buffer_load_dword [[VAL:v[0-9]+]],
; SI: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]]
; SI: buffer_store_dword [[RESULT]],
define void @v_ctlz_zero_undef_i32_sel_eq_neg1(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp eq i32 %val, 0
%sel = select i1 %cmp, i32 -1, i32 %ctlz
store i32 %sel, i32 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_neg1:
; SI: buffer_load_dword [[VAL:v[0-9]+]],
; SI: v_ffbh_u32_e32 [[RESULT:v[0-9]+]], [[VAL]]
; SI: buffer_store_dword [[RESULT]],
define void @v_ctlz_zero_undef_i32_sel_ne_neg1(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp ne i32 %val, 0
%sel = select i1 %cmp, i32 %ctlz, i32 -1
store i32 %sel, i32 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i8_sel_eq_neg1:
; SI: buffer_load_ubyte [[VAL:v[0-9]+]],
; SI: v_ffbh_u32_e32 [[FFBH:v[0-9]+]], [[VAL]]
; SI: buffer_store_byte [[FFBH]],
define void @v_ctlz_zero_undef_i8_sel_eq_neg1(i8 addrspace(1)* noalias %out, i8 addrspace(1)* noalias %valptr) nounwind {
%val = load i8, i8 addrspace(1)* %valptr
%ctlz = call i8 @llvm.ctlz.i8(i8 %val, i1 true) nounwind readnone
%cmp = icmp eq i8 %val, 0
%sel = select i1 %cmp, i8 -1, i8 %ctlz
store i8 %sel, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_neg1_two_use:
; SI: buffer_load_dword [[VAL:v[0-9]+]],
; SI-DAG: v_ffbh_u32_e32 [[RESULT0:v[0-9]+]], [[VAL]]
; SI-DAG: v_cmp_eq_u32_e32 vcc, 0, [[VAL]]
; SI-DAG: v_cndmask_b32_e64 [[RESULT1:v[0-9]+]], 0, 1, vcc
; SI-DAG: buffer_store_dword [[RESULT0]]
; SI-DAG: buffer_store_byte [[RESULT1]]
; SI: s_endpgm
define void @v_ctlz_zero_undef_i32_sel_eq_neg1_two_use(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp eq i32 %val, 0
%sel = select i1 %cmp, i32 -1, i32 %ctlz
store volatile i32 %sel, i32 addrspace(1)* %out
store volatile i1 %cmp, i1 addrspace(1)* undef
ret void
}
; Selected on wrong constant
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_0:
; SI: buffer_load_dword
; SI: v_ffbh_u32_e32
; SI: v_cmp
; SI: v_cndmask
; SI: buffer_store_dword
define void @v_ctlz_zero_undef_i32_sel_eq_0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp eq i32 %val, 0
%sel = select i1 %cmp, i32 0, i32 %ctlz
store i32 %sel, i32 addrspace(1)* %out
ret void
}
; Selected on wrong constant
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_0:
; SI: buffer_load_dword
; SI: v_ffbh_u32_e32
; SI: v_cmp
; SI: v_cndmask
; SI: buffer_store_dword
define void @v_ctlz_zero_undef_i32_sel_ne_0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp ne i32 %val, 0
%sel = select i1 %cmp, i32 %ctlz, i32 0
store i32 %sel, i32 addrspace(1)* %out
ret void
}
; Compare on wrong constant
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_eq_cmp_non0:
; SI: buffer_load_dword
; SI: v_ffbh_u32_e32
; SI: v_cmp
; SI: v_cndmask
; SI: buffer_store_dword
define void @v_ctlz_zero_undef_i32_sel_eq_cmp_non0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp eq i32 %val, 1
%sel = select i1 %cmp, i32 0, i32 %ctlz
store i32 %sel, i32 addrspace(1)* %out
ret void
}
; Selected on wrong constant
; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i32_sel_ne_cmp_non0:
; SI: buffer_load_dword
; SI: v_ffbh_u32_e32
; SI: v_cmp
; SI: v_cndmask
; SI: buffer_store_dword
define void @v_ctlz_zero_undef_i32_sel_ne_cmp_non0(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
%val = load i32, i32 addrspace(1)* %valptr
%ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 true) nounwind readnone
%cmp = icmp ne i32 %val, 1
%sel = select i1 %cmp, i32 %ctlz, i32 0
store i32 %sel, i32 addrspace(1)* %out
ret void
}
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