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AMDGPU: Add definitions for ds_{read|write}_b{96|128} 

It's not clear to me if this is always better than
doing ds_write2_b64 This adds the constraint of
a 128-bit register input instead of a pair of
64-bit.

llvm-svn: 296512
This commit is contained in:
Matt Arsenault 2017-02-28 20:15:43 +00:00
parent 73d29ab3a7
commit dedc544ac7
2 changed files with 28 additions and 4 deletions
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23
llvm/lib/Target/AMDGPU/DSInstructions.td
View File

@ -444,17 +444,24 @@ def DS_ORDERED_COUNT : DS_1A_RET_GDS<"ds_ordered_count">;
// DS_GWS_SEMA_RELEASE_ALL
// DS_WRAP_RTN_B32
// DS_CNDXCHG32_RTN_B64
// DS_WRITE_B96
// DS_WRITE_B128
// DS_CONDXCHG32_RTN_B128
// DS_READ_B96
// DS_READ_B128
let SubtargetPredicate = isCIVI in {
def DS_WRAP_RTN_F32 : DS_1A1D_RET <"ds_wrap_rtn_f32">,
AtomicNoRet<"ds_wrap_f32", 1>;
let mayStore = 0 in {
def DS_READ_B96 : DS_1A_RET<"ds_read_b96", VReg_96>;
def DS_READ_B128: DS_1A_RET<"ds_read_b128", VReg_128>;
} // End mayStore = 0
let mayLoad = 0 in {
def DS_WRITE_B96 : DS_1A1D_NORET<"ds_write_b96", VReg_96>;
def DS_WRITE_B128 : DS_1A1D_NORET<"ds_write_b128", VReg_128>;
} // End mayLoad = 0
} // let SubtargetPredicate = isCIVI
//===----------------------------------------------------------------------===//
@ -745,6 +752,10 @@ def DS_WRITE_SRC2_B64_si : DS_Real_si<0xcd, DS_WRITE_SRC2_B64>;
def DS_MIN_SRC2_F64_si : DS_Real_si<0xd2, DS_MIN_SRC2_F64>;
def DS_MAX_SRC2_F64_si : DS_Real_si<0xd3, DS_MAX_SRC2_F64>;
def DS_WRITE_B96_si : DS_Real_si<0xde, DS_WRITE_B96>;
def DS_WRITE_B128_si : DS_Real_si<0xdf, DS_WRITE_B128>;
def DS_READ_B96_si : DS_Real_si<0xfe, DS_READ_B96>;
def DS_READ_B128_si : DS_Real_si<0xff, DS_READ_B128>;
//===----------------------------------------------------------------------===//
// VIInstructions.td
@ -905,3 +916,7 @@ def DS_XOR_SRC2_B64_vi : DS_Real_vi<0xcb, DS_XOR_SRC2_B64>;
def DS_WRITE_SRC2_B64_vi : DS_Real_vi<0xcd, DS_WRITE_SRC2_B64>;
def DS_MIN_SRC2_F64_vi : DS_Real_vi<0xd2, DS_MIN_SRC2_F64>;
def DS_MAX_SRC2_F64_vi : DS_Real_vi<0xd3, DS_MAX_SRC2_F64>;
def DS_WRITE_B96_vi : DS_Real_vi<0xde, DS_WRITE_B96>;
def DS_WRITE_B128_vi : DS_Real_vi<0xdf, DS_WRITE_B128>;
def DS_READ_B96_vi : DS_Real_vi<0xfe, DS_READ_B96>;
def DS_READ_B128_vi : DS_Real_vi<0xff, DS_READ_B128>;

9
llvm/test/MC/AMDGPU/ds.s
View File

@ -468,3 +468,12 @@ ds_read2st64_b64 v[8:11], v2
// SICI: ds_read2st64_b64 v[8:11], v2 ; encoding: [0x00,0x00,0xe0,0xd9,0x02,0x00,0x00,0x08]
// VI: ds_read2st64_b64 v[8:11], v2 ; encoding: [0x00,0x00,0xf0,0xd8,0x02,0x00,0x00,0x08]
ds_read_b128 v[8:11], v2
// NOSI: error: instruction not supported on this GPU
// CI: ds_read_b128 v[8:11], v2 ; encoding: [0x00,0x00,0xfc,0xdb,0x02,0x00,0x00,0x08]
// VI: ds_read_b128 v[8:11], v2 ; encoding: [0x00,0x00,0xfe,0xd9,0x02,0x00,0x00,0x08]
ds_write_b128 v2, v[4:7]
// NOSI: error: instruction not supported on this GPU
// CI: ds_write_b128 v2, v[4:7] ; encoding: [0x00,0x00,0x7c,0xdb,0x02,0x04,0x00,0x00]
// VI: ds_write_b128 v2, v[4:7] ; encoding: [0x00,0x00,0xbe,0xd9,0x02,0x04,0x00,0x00]