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llvm-mirror/test/CodeGen/R600/setcc-opt.ll
Matt Arsenault c20cbf651a R600/SI: Allow commuting compares 
This enables very common cases to switch to the
smaller encoding.

All of the standard LLVM canonicalizations of comparisons
are the opposite of what we want. Compares with constants
are moved to the RHS, but the first operand can be an inline
immediate, literal constant, or SGPR using the 32-bit VOPC
encoding.

There are additional bad canonicalizations that should
also be fixed, such as canonicalizing ge x, k to gt x, (k + 1)
if this makes k no longer an inline immediate value.

llvm-svn: 232988
2015-03-23 18:45:30 +00:00

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; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
; FUNC-LABEL: {{^}}sext_bool_icmp_eq_0:
; GCN-NOT: v_cmp
; GCN: v_cmp_ne_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT:buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
; EG: SETNE_INT * [[CMP:T[0-9]+]].[[CMPCHAN:[XYZW]]], KC0[2].Z, KC0[2].W
; EG: AND_INT T{{[0-9]+.[XYZW]}}, PS, 1
define void @sext_bool_icmp_eq_0(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp eq i32 %a, %b
%ext = sext i1 %icmp0 to i32
%icmp1 = icmp eq i32 %ext, 0
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}sext_bool_icmp_ne_0:
; GCN-NOT: v_cmp
; GCN: v_cmp_ne_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
; EG: SETNE_INT * [[CMP:T[0-9]+]].[[CMPCHAN:[XYZW]]], KC0[2].Z, KC0[2].W
; EG: AND_INT T{{[0-9]+.[XYZW]}}, PS, 1
define void @sext_bool_icmp_ne_0(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = sext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 0
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; This really folds away to false
; FUNC-LABEL: {{^}}sext_bool_icmp_eq_1:
; GCN: v_cmp_eq_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[TMP:v[0-9]+]], 0, -1, vcc
; GCN-NEXT: v_cmp_eq_i32_e32 vcc, 1, [[TMP]]{{$}}
; GCN-NEXT: v_cndmask_b32_e64 [[TMP:v[0-9]+]], 0, 1,
; GCN-NEXT: buffer_store_byte [[TMP]]
; GCN-NEXT: s_endpgm
define void @sext_bool_icmp_eq_1(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp eq i32 %a, %b
%ext = sext i1 %icmp0 to i32
%icmp1 = icmp eq i32 %ext, 1
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; This really folds away to true
; FUNC-LABEL: {{^}}sext_bool_icmp_ne_1:
; GCN: v_cmp_ne_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[TMP:v[0-9]+]], 0, -1, vcc
; GCN-NEXT: v_cmp_ne_i32_e32 vcc, 1, [[TMP]]{{$}}
; GCN-NEXT: v_cndmask_b32_e64 [[TMP:v[0-9]+]], 0, 1,
; GCN-NEXT: buffer_store_byte [[TMP]]
; GCN-NEXT: s_endpgm
define void @sext_bool_icmp_ne_1(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = sext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 1
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_eq_0:
; GCN-NOT: v_cmp
; GCN: v_cmp_ne_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
define void @zext_bool_icmp_eq_0(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp eq i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp eq i32 %ext, 0
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_ne_0:
; GCN-NOT: v_cmp
; GCN: v_cmp_ne_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
define void @zext_bool_icmp_ne_0(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 0
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_eq_1:
; GCN-NOT: v_cmp
; GCN: v_cmp_eq_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
define void @zext_bool_icmp_eq_1(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp eq i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp eq i32 %ext, 1
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_ne_1:
; GCN-NOT: v_cmp
; GCN: v_cmp_eq_i32_e32 vcc,
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
define void @zext_bool_icmp_ne_1(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 1
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}sext_bool_icmp_ne_k:
; SI-DAG: s_load_dword [[A:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xb
; SI-DAG: s_load_dword [[B:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xc
; VI-DAG: s_load_dword [[A:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0x2c
; VI-DAG: s_load_dword [[B:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0x30
; GCN: v_mov_b32_e32 [[VB:v[0-9]+]], [[B]]
; GCN: v_cmp_ne_i32_e32 vcc, 2, [[VB]]{{$}}
; GCN: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN: buffer_store_byte
; GCN: s_endpgm
define void @sext_bool_icmp_ne_k(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = sext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 2
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}cmp_zext_k_i8max:
; GCN: buffer_load_ubyte [[B:v[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0 offset:44
; GCN: v_mov_b32_e32 [[K255:v[0-9]+]], 0xff{{$}}
; GCN: v_cmp_ne_i32_e32 vcc, [[K255]], [[B]]
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN: s_endpgm
define void @cmp_zext_k_i8max(i1 addrspace(1)* %out, i8 %b) nounwind {
%b.ext = zext i8 %b to i32
%icmp0 = icmp ne i32 %b.ext, 255
store i1 %icmp0, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}cmp_sext_k_neg1:
; GCN: buffer_load_sbyte [[B:v[0-9]+]]
; GCN: v_cmp_ne_i32_e32 vcc, -1, [[B]]{{$}}
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN: s_endpgm
define void @cmp_sext_k_neg1(i1 addrspace(1)* %out, i8 addrspace(1)* %b.ptr) nounwind {
%b = load i8, i8 addrspace(1)* %b.ptr
%b.ext = sext i8 %b to i32
%icmp0 = icmp ne i32 %b.ext, -1
store i1 %icmp0, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}cmp_sext_k_neg1_i8_sext_arg:
; GCN: s_load_dword [[B:s[0-9]+]]
; GCN: v_cmp_ne_i32_e64 [[CMP:s\[[0-9]+:[0-9]+\]]], -1, [[B]]
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, [[CMP]]
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN: s_endpgm
define void @cmp_sext_k_neg1_i8_sext_arg(i1 addrspace(1)* %out, i8 signext %b) nounwind {
%b.ext = sext i8 %b to i32
%icmp0 = icmp ne i32 %b.ext, -1
store i1 %icmp0, i1 addrspace(1)* %out
ret void
}
; FIXME: This ends up doing a buffer_load_ubyte, and and compare to
; 255. Seems to be because of ordering problems when not allowing load widths to be reduced.
; Should do a buffer_load_sbyte and compare with -1
; FUNC-LABEL: {{^}}cmp_sext_k_neg1_i8_arg:
; GCN-DAG: buffer_load_ubyte [[B:v[0-9]+]]
; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0xff{{$}}
; GCN: v_cmp_ne_i32_e32 vcc, [[K]], [[B]]{{$}}
; GCN-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, 1, vcc
; GCN-NEXT: buffer_store_byte [[RESULT]]
; GCN: s_endpgm
define void @cmp_sext_k_neg1_i8_arg(i1 addrspace(1)* %out, i8 %b) nounwind {
%b.ext = sext i8 %b to i32
%icmp0 = icmp ne i32 %b.ext, -1
store i1 %icmp0, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}cmp_zext_k_neg1:
; GCN: v_mov_b32_e32 [[RESULT:v[0-9]+]], 1{{$}}
; GCN: buffer_store_byte [[RESULT]]
; GCN: s_endpgm
define void @cmp_zext_k_neg1(i1 addrspace(1)* %out, i8 %b) nounwind {
%b.ext = zext i8 %b to i32
%icmp0 = icmp ne i32 %b.ext, -1
store i1 %icmp0, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_ne_k:
; GCN: v_mov_b32_e32 [[RESULT:v[0-9]+]], 1{{$}}
; GCN: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
define void @zext_bool_icmp_ne_k(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp ne i32 %ext, 2
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}zext_bool_icmp_eq_k:
; GCN: v_mov_b32_e32 [[RESULT:v[0-9]+]], 0{{$}}
; GCN: buffer_store_byte [[RESULT]]
; GCN-NEXT: s_endpgm
define void @zext_bool_icmp_eq_k(i1 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%icmp0 = icmp ne i32 %a, %b
%ext = zext i1 %icmp0 to i32
%icmp1 = icmp eq i32 %ext, 2
store i1 %icmp1, i1 addrspace(1)* %out
ret void
}
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