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llvm-mirror/test/CodeGen/X86/avx2-arith.ll
Craig Topper b991b9ac11 [X86] Attempt to improve v32i8/v64i8 multiply lowering by applying the v16i8 non-avx2 algorithm to each 128-bit lane. 
Previously we split the vectors in half to allow the two halves to be any extended then concatenated the results back together.

This patch instead instead extends the v16i8 sse algorithm to extend half of each 128-bit lane using punpcklbw/punpckhbw. Multiplies all the low half lanes and high half lanes together in separate operations. Then merges the half lane results back together using packuswb.

Unfortunately, some of the cases in vector-reduce-mul.ll regress because we aren't narrowing the vector width of the multiplies as we reduce. The splitting was somewhat making up for that before by causing halves to be discarded after the split.

Differential Revision: https://reviews.llvm.org/D54668

llvm-svn: 347240
2018-11-19 18:32:53 +00:00

398 lines
14 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefix=X32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefix=X64
define <4 x i64> @test_vpaddq(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
; X32-LABEL: test_vpaddq:
; X32: # %bb.0:
; X32-NEXT: vpaddq %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpaddq:
; X64: # %bb.0:
; X64-NEXT: vpaddq %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = add <4 x i64> %i, %j
ret <4 x i64> %x
}
define <8 x i32> @test_vpaddd(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
; X32-LABEL: test_vpaddd:
; X32: # %bb.0:
; X32-NEXT: vpaddd %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpaddd:
; X64: # %bb.0:
; X64-NEXT: vpaddd %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = add <8 x i32> %i, %j
ret <8 x i32> %x
}
define <16 x i16> @test_vpaddw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
; X32-LABEL: test_vpaddw:
; X32: # %bb.0:
; X32-NEXT: vpaddw %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpaddw:
; X64: # %bb.0:
; X64-NEXT: vpaddw %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = add <16 x i16> %i, %j
ret <16 x i16> %x
}
define <32 x i8> @test_vpaddb(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
; X32-LABEL: test_vpaddb:
; X32: # %bb.0:
; X32-NEXT: vpaddb %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpaddb:
; X64: # %bb.0:
; X64-NEXT: vpaddb %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = add <32 x i8> %i, %j
ret <32 x i8> %x
}
define <4 x i64> @test_vpsubq(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
; X32-LABEL: test_vpsubq:
; X32: # %bb.0:
; X32-NEXT: vpsubq %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpsubq:
; X64: # %bb.0:
; X64-NEXT: vpsubq %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = sub <4 x i64> %i, %j
ret <4 x i64> %x
}
define <8 x i32> @test_vpsubd(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
; X32-LABEL: test_vpsubd:
; X32: # %bb.0:
; X32-NEXT: vpsubd %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpsubd:
; X64: # %bb.0:
; X64-NEXT: vpsubd %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = sub <8 x i32> %i, %j
ret <8 x i32> %x
}
define <16 x i16> @test_vpsubw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
; X32-LABEL: test_vpsubw:
; X32: # %bb.0:
; X32-NEXT: vpsubw %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpsubw:
; X64: # %bb.0:
; X64-NEXT: vpsubw %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = sub <16 x i16> %i, %j
ret <16 x i16> %x
}
define <32 x i8> @test_vpsubb(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
; X32-LABEL: test_vpsubb:
; X32: # %bb.0:
; X32-NEXT: vpsubb %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpsubb:
; X64: # %bb.0:
; X64-NEXT: vpsubb %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = sub <32 x i8> %i, %j
ret <32 x i8> %x
}
define <8 x i32> @test_vpmulld(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
; X32-LABEL: test_vpmulld:
; X32: # %bb.0:
; X32-NEXT: vpmulld %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpmulld:
; X64: # %bb.0:
; X64-NEXT: vpmulld %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = mul <8 x i32> %i, %j
ret <8 x i32> %x
}
define <16 x i16> @test_vpmullw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
; X32-LABEL: test_vpmullw:
; X32: # %bb.0:
; X32-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: test_vpmullw:
; X64: # %bb.0:
; X64-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%x = mul <16 x i16> %i, %j
ret <16 x i16> %x
}
define <16 x i8> @mul_v16i8(<16 x i8> %i, <16 x i8> %j) nounwind readnone {
; X32-LABEL: mul_v16i8:
; X32: # %bb.0:
; X32-NEXT: vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
; X32-NEXT: vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
; X32-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X32-NEXT: vpand {{\.LCPI.*}}, %ymm0, %ymm0
; X32-NEXT: vextracti128 $1, %ymm0, %xmm1
; X32-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; X32-NEXT: vzeroupper
; X32-NEXT: retl
;
; X64-LABEL: mul_v16i8:
; X64: # %bb.0:
; X64-NEXT: vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
; X64-NEXT: vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
; X64-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X64-NEXT: vpand {{.*}}(%rip), %ymm0, %ymm0
; X64-NEXT: vextracti128 $1, %ymm0, %xmm1
; X64-NEXT: vpackuswb %xmm1, %xmm0, %xmm0
; X64-NEXT: vzeroupper
; X64-NEXT: retq
%x = mul <16 x i8> %i, %j
ret <16 x i8> %x
}
define <32 x i8> @mul_v32i8(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
; X32-LABEL: mul_v32i8:
; X32: # %bb.0:
; X32-NEXT: vpunpckhbw {{.*#+}} ymm2 = ymm1[8],ymm0[8],ymm1[9],ymm0[9],ymm1[10],ymm0[10],ymm1[11],ymm0[11],ymm1[12],ymm0[12],ymm1[13],ymm0[13],ymm1[14],ymm0[14],ymm1[15],ymm0[15],ymm1[24],ymm0[24],ymm1[25],ymm0[25],ymm1[26],ymm0[26],ymm1[27],ymm0[27],ymm1[28],ymm0[28],ymm1[29],ymm0[29],ymm1[30],ymm0[30],ymm1[31],ymm0[31]
; X32-NEXT: vpunpckhbw {{.*#+}} ymm3 = ymm0[8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,24,24,25,25,26,26,27,27,28,28,29,29,30,30,31,31]
; X32-NEXT: vpmullw %ymm2, %ymm3, %ymm2
; X32-NEXT: vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
; X32-NEXT: vpand %ymm3, %ymm2, %ymm2
; X32-NEXT: vpunpcklbw {{.*#+}} ymm1 = ymm1[0],ymm0[0],ymm1[1],ymm0[1],ymm1[2],ymm0[2],ymm1[3],ymm0[3],ymm1[4],ymm0[4],ymm1[5],ymm0[5],ymm1[6],ymm0[6],ymm1[7],ymm0[7],ymm1[16],ymm0[16],ymm1[17],ymm0[17],ymm1[18],ymm0[18],ymm1[19],ymm0[19],ymm1[20],ymm0[20],ymm1[21],ymm0[21],ymm1[22],ymm0[22],ymm1[23],ymm0[23]
; X32-NEXT: vpunpcklbw {{.*#+}} ymm0 = ymm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23]
; X32-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X32-NEXT: vpand %ymm3, %ymm0, %ymm0
; X32-NEXT: vpackuswb %ymm2, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_v32i8:
; X64: # %bb.0:
; X64-NEXT: vpunpckhbw {{.*#+}} ymm2 = ymm1[8],ymm0[8],ymm1[9],ymm0[9],ymm1[10],ymm0[10],ymm1[11],ymm0[11],ymm1[12],ymm0[12],ymm1[13],ymm0[13],ymm1[14],ymm0[14],ymm1[15],ymm0[15],ymm1[24],ymm0[24],ymm1[25],ymm0[25],ymm1[26],ymm0[26],ymm1[27],ymm0[27],ymm1[28],ymm0[28],ymm1[29],ymm0[29],ymm1[30],ymm0[30],ymm1[31],ymm0[31]
; X64-NEXT: vpunpckhbw {{.*#+}} ymm3 = ymm0[8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,24,24,25,25,26,26,27,27,28,28,29,29,30,30,31,31]
; X64-NEXT: vpmullw %ymm2, %ymm3, %ymm2
; X64-NEXT: vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
; X64-NEXT: vpand %ymm3, %ymm2, %ymm2
; X64-NEXT: vpunpcklbw {{.*#+}} ymm1 = ymm1[0],ymm0[0],ymm1[1],ymm0[1],ymm1[2],ymm0[2],ymm1[3],ymm0[3],ymm1[4],ymm0[4],ymm1[5],ymm0[5],ymm1[6],ymm0[6],ymm1[7],ymm0[7],ymm1[16],ymm0[16],ymm1[17],ymm0[17],ymm1[18],ymm0[18],ymm1[19],ymm0[19],ymm1[20],ymm0[20],ymm1[21],ymm0[21],ymm1[22],ymm0[22],ymm1[23],ymm0[23]
; X64-NEXT: vpunpcklbw {{.*#+}} ymm0 = ymm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23]
; X64-NEXT: vpmullw %ymm1, %ymm0, %ymm0
; X64-NEXT: vpand %ymm3, %ymm0, %ymm0
; X64-NEXT: vpackuswb %ymm2, %ymm0, %ymm0
; X64-NEXT: retq
%x = mul <32 x i8> %i, %j
ret <32 x i8> %x
}
define <4 x i64> @mul_v4i64(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
; X32-LABEL: mul_v4i64:
; X32: # %bb.0:
; X32-NEXT: vpsrlq $32, %ymm0, %ymm2
; X32-NEXT: vpmuludq %ymm1, %ymm2, %ymm2
; X32-NEXT: vpsrlq $32, %ymm1, %ymm3
; X32-NEXT: vpmuludq %ymm3, %ymm0, %ymm3
; X32-NEXT: vpaddq %ymm2, %ymm3, %ymm2
; X32-NEXT: vpsllq $32, %ymm2, %ymm2
; X32-NEXT: vpmuludq %ymm1, %ymm0, %ymm0
; X32-NEXT: vpaddq %ymm2, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_v4i64:
; X64: # %bb.0:
; X64-NEXT: vpsrlq $32, %ymm0, %ymm2
; X64-NEXT: vpmuludq %ymm1, %ymm2, %ymm2
; X64-NEXT: vpsrlq $32, %ymm1, %ymm3
; X64-NEXT: vpmuludq %ymm3, %ymm0, %ymm3
; X64-NEXT: vpaddq %ymm2, %ymm3, %ymm2
; X64-NEXT: vpsllq $32, %ymm2, %ymm2
; X64-NEXT: vpmuludq %ymm1, %ymm0, %ymm0
; X64-NEXT: vpaddq %ymm2, %ymm0, %ymm0
; X64-NEXT: retq
%x = mul <4 x i64> %i, %j
ret <4 x i64> %x
}
define <8 x i32> @mul_const1(<8 x i32> %x) {
; X32-LABEL: mul_const1:
; X32: # %bb.0:
; X32-NEXT: vpaddd %ymm0, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const1:
; X64: # %bb.0:
; X64-NEXT: vpaddd %ymm0, %ymm0, %ymm0
; X64-NEXT: retq
%y = mul <8 x i32> %x, <i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2>
ret <8 x i32> %y
}
define <4 x i64> @mul_const2(<4 x i64> %x) {
; X32-LABEL: mul_const2:
; X32: # %bb.0:
; X32-NEXT: vpsllq $2, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const2:
; X64: # %bb.0:
; X64-NEXT: vpsllq $2, %ymm0, %ymm0
; X64-NEXT: retq
%y = mul <4 x i64> %x, <i64 4, i64 4, i64 4, i64 4>
ret <4 x i64> %y
}
define <16 x i16> @mul_const3(<16 x i16> %x) {
; X32-LABEL: mul_const3:
; X32: # %bb.0:
; X32-NEXT: vpsllw $3, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const3:
; X64: # %bb.0:
; X64-NEXT: vpsllw $3, %ymm0, %ymm0
; X64-NEXT: retq
%y = mul <16 x i16> %x, <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
ret <16 x i16> %y
}
define <4 x i64> @mul_const4(<4 x i64> %x) {
; X32-LABEL: mul_const4:
; X32: # %bb.0:
; X32-NEXT: vpxor %xmm1, %xmm1, %xmm1
; X32-NEXT: vpsubq %ymm0, %ymm1, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const4:
; X64: # %bb.0:
; X64-NEXT: vpxor %xmm1, %xmm1, %xmm1
; X64-NEXT: vpsubq %ymm0, %ymm1, %ymm0
; X64-NEXT: retq
%y = mul <4 x i64> %x, <i64 -1, i64 -1, i64 -1, i64 -1>
ret <4 x i64> %y
}
define <8 x i32> @mul_const5(<8 x i32> %x) {
; X32-LABEL: mul_const5:
; X32: # %bb.0:
; X32-NEXT: vxorps %xmm0, %xmm0, %xmm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const5:
; X64: # %bb.0:
; X64-NEXT: vxorps %xmm0, %xmm0, %xmm0
; X64-NEXT: retq
%y = mul <8 x i32> %x, <i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>
ret <8 x i32> %y
}
define <8 x i32> @mul_const6(<8 x i32> %x) {
; X32-LABEL: mul_const6:
; X32: # %bb.0:
; X32-NEXT: vpmulld {{\.LCPI.*}}, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const6:
; X64: # %bb.0:
; X64-NEXT: vpmulld {{.*}}(%rip), %ymm0, %ymm0
; X64-NEXT: retq
%y = mul <8 x i32> %x, <i32 0, i32 0, i32 0, i32 2, i32 0, i32 2, i32 0, i32 0>
ret <8 x i32> %y
}
define <8 x i64> @mul_const7(<8 x i64> %x) {
; X32-LABEL: mul_const7:
; X32: # %bb.0:
; X32-NEXT: vpaddq %ymm0, %ymm0, %ymm0
; X32-NEXT: vpaddq %ymm1, %ymm1, %ymm1
; X32-NEXT: retl
;
; X64-LABEL: mul_const7:
; X64: # %bb.0:
; X64-NEXT: vpaddq %ymm0, %ymm0, %ymm0
; X64-NEXT: vpaddq %ymm1, %ymm1, %ymm1
; X64-NEXT: retq
%y = mul <8 x i64> %x, <i64 2, i64 2, i64 2, i64 2, i64 2, i64 2, i64 2, i64 2>
ret <8 x i64> %y
}
define <8 x i16> @mul_const8(<8 x i16> %x) {
; X32-LABEL: mul_const8:
; X32: # %bb.0:
; X32-NEXT: vpsllw $3, %xmm0, %xmm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const8:
; X64: # %bb.0:
; X64-NEXT: vpsllw $3, %xmm0, %xmm0
; X64-NEXT: retq
%y = mul <8 x i16> %x, <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
ret <8 x i16> %y
}
define <8 x i32> @mul_const9(<8 x i32> %x) {
; X32-LABEL: mul_const9:
; X32: # %bb.0:
; X32-NEXT: movl $2, %eax
; X32-NEXT: vmovd %eax, %xmm1
; X32-NEXT: vpmulld %ymm1, %ymm0, %ymm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const9:
; X64: # %bb.0:
; X64-NEXT: movl $2, %eax
; X64-NEXT: vmovd %eax, %xmm1
; X64-NEXT: vpmulld %ymm1, %ymm0, %ymm0
; X64-NEXT: retq
%y = mul <8 x i32> %x, <i32 2, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>
ret <8 x i32> %y
}
; %x * 0x01010101
define <4 x i32> @mul_const10(<4 x i32> %x) {
; X32-LABEL: mul_const10:
; X32: # %bb.0:
; X32-NEXT: vpbroadcastd {{.*#+}} xmm1 = [16843009,16843009,16843009,16843009]
; X32-NEXT: vpmulld %xmm1, %xmm0, %xmm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const10:
; X64: # %bb.0:
; X64-NEXT: vpbroadcastd {{.*#+}} xmm1 = [16843009,16843009,16843009,16843009]
; X64-NEXT: vpmulld %xmm1, %xmm0, %xmm0
; X64-NEXT: retq
%m = mul <4 x i32> %x, <i32 16843009, i32 16843009, i32 16843009, i32 16843009>
ret <4 x i32> %m
}
; %x * 0x80808080
define <4 x i32> @mul_const11(<4 x i32> %x) {
; X32-LABEL: mul_const11:
; X32: # %bb.0:
; X32-NEXT: vpbroadcastd {{.*#+}} xmm1 = [2155905152,2155905152,2155905152,2155905152]
; X32-NEXT: vpmulld %xmm1, %xmm0, %xmm0
; X32-NEXT: retl
;
; X64-LABEL: mul_const11:
; X64: # %bb.0:
; X64-NEXT: vpbroadcastd {{.*#+}} xmm1 = [2155905152,2155905152,2155905152,2155905152]
; X64-NEXT: vpmulld %xmm1, %xmm0, %xmm0
; X64-NEXT: retq
%m = mul <4 x i32> %x, <i32 2155905152, i32 2155905152, i32 2155905152, i32 2155905152>
ret <4 x i32> %m
}
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