replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

AVX-512: Added more patterns for VMOVSS, VMOVSD, VMOVD, VMOVQ 

llvm-svn: 188786
This commit is contained in:
Elena Demikhovsky 2013-08-20 11:00:29 +00:00
parent b545c253d6
commit 540d582594
3 changed files with 98 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
llvm/lib/Target/X86/X86InstrAVX512.td
View File

@ -1305,28 +1305,51 @@ let isCodeGenOnly = 1 in {
}
let Predicates = [HasAVX512] in {
let AddedComplexity = 15 in {
// Move scalar to XMM zero-extended, zeroing a VR128X then do a
// MOVS{S,D} to the lower bits.
def : Pat<(v4f32 (X86vzmovl (v4f32 (scalar_to_vector FR32X:$src)))),
(VMOVSSZrr (v4f32 (V_SET0)), FR32X:$src)>;
def : Pat<(v4f32 (X86vzmovl (v4f32 VR128X:$src))),
(VMOVSSZrr (v4f32 (V_SET0)), (COPY_TO_REGCLASS VR128X:$src, FR32X))>;
def : Pat<(v4i32 (X86vzmovl (v4i32 VR128X:$src))),
(VMOVSSZrr (v4i32 (V_SET0)), (COPY_TO_REGCLASS VR128X:$src, FR32X))>;
def : Pat<(v2f64 (X86vzmovl (v2f64 (scalar_to_vector FR64X:$src)))),
(VMOVSDZrr (v2f64 (V_SET0)), FR64X:$src)>;
// Move low f32 and clear high bits.
def : Pat<(v8f32 (X86vzmovl (v8f32 VR256X:$src))),
(SUBREG_TO_REG (i32 0),
(VMOVSSZrr (v4f32 (V_SET0)),
(EXTRACT_SUBREG (v8f32 VR256X:$src), sub_xmm)), sub_xmm)>;
def : Pat<(v8i32 (X86vzmovl (v8i32 VR256X:$src))),
(SUBREG_TO_REG (i32 0),
(VMOVSSZrr (v4i32 (V_SET0)),
(EXTRACT_SUBREG (v8i32 VR256X:$src), sub_xmm)), sub_xmm)>;
}
let AddedComplexity = 20 in {
// MOVSSrm zeros the high parts of the register; represent this
// with SUBREG_TO_REG. The AVX versions also write: DST[255:128] <- 0
def : Pat<(v4f32 (X86vzmovl (v4f32 (scalar_to_vector (loadf32 addr:$src))))),
(COPY_TO_REGCLASS (VMOVSSrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSSZrm addr:$src), VR128X)>;
def : Pat<(v4f32 (scalar_to_vector (loadf32 addr:$src))),
(COPY_TO_REGCLASS (VMOVSSrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSSZrm addr:$src), VR128X)>;
def : Pat<(v4f32 (X86vzmovl (loadv4f32 addr:$src))),
(COPY_TO_REGCLASS (VMOVSSrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSSZrm addr:$src), VR128X)>;
// MOVSDrm zeros the high parts of the register; represent this
// with SUBREG_TO_REG. The AVX versions also write: DST[255:128] <- 0
def : Pat<(v2f64 (X86vzmovl (v2f64 (scalar_to_vector (loadf64 addr:$src))))),
(COPY_TO_REGCLASS (VMOVSDrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSDZrm addr:$src), VR128X)>;
def : Pat<(v2f64 (scalar_to_vector (loadf64 addr:$src))),
(COPY_TO_REGCLASS (VMOVSDrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSDZrm addr:$src), VR128X)>;
def : Pat<(v2f64 (X86vzmovl (loadv2f64 addr:$src))),
(COPY_TO_REGCLASS (VMOVSDrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSDZrm addr:$src), VR128X)>;
def : Pat<(v2f64 (X86vzmovl (bc_v2f64 (loadv4f32 addr:$src)))),
(COPY_TO_REGCLASS (VMOVSDrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSDZrm addr:$src), VR128X)>;
def : Pat<(v2f64 (X86vzload addr:$src)),
(COPY_TO_REGCLASS (VMOVSDrm addr:$src), VR128X)>;
(COPY_TO_REGCLASS (VMOVSDZrm addr:$src), VR128X)>;
// Represent the same patterns above but in the form they appear for
// 256-bit types
@ -1340,10 +1363,28 @@ let Predicates = [HasAVX512] in {
(v2f64 (scalar_to_vector (loadf64 addr:$src))), (iPTR 0)))),
(SUBREG_TO_REG (i32 0), (VMOVSDZrm addr:$src), sub_xmm)>;
}
def : Pat<(v8f32 (X86vzmovl (insert_subvector undef,
(v4f32 (scalar_to_vector FR32X:$src)), (iPTR 0)))),
(SUBREG_TO_REG (i32 0), (v4f32 (VMOVSSZrr (v4f32 (V_SET0)),
FR32X:$src)), sub_xmm)>;
def : Pat<(v4f64 (X86vzmovl (insert_subvector undef,
(v2f64 (scalar_to_vector FR64X:$src)), (iPTR 0)))),
(SUBREG_TO_REG (i64 0), (v2f64 (VMOVSDZrr (v2f64 (V_SET0)),
FR64X:$src)), sub_xmm)>;
def : Pat<(v4i64 (X86vzmovl (insert_subvector undef,
(v2i64 (scalar_to_vector (loadi64 addr:$src))), (iPTR 0)))),
(SUBREG_TO_REG (i64 0), (VMOVSDZrm addr:$src), sub_xmm)>;
// Move low f64 and clear high bits.
def : Pat<(v4f64 (X86vzmovl (v4f64 VR256X:$src))),
(SUBREG_TO_REG (i32 0),
(VMOVSDZrr (v2f64 (V_SET0)),
(EXTRACT_SUBREG (v4f64 VR256X:$src), sub_xmm)), sub_xmm)>;
def : Pat<(v4i64 (X86vzmovl (v4i64 VR256X:$src))),
(SUBREG_TO_REG (i32 0), (VMOVSDZrr (v2i64 (V_SET0)),
(EXTRACT_SUBREG (v4i64 VR256X:$src), sub_xmm)), sub_xmm)>;
// Extract and store.
def : Pat<(store (f32 (vector_extract (v4f32 VR128X:$src), (iPTR 0))),
addr:$dst),
@ -1420,11 +1461,29 @@ def VMOVZPQILo2PQIZrm : AVX512XSI<0x7E, MRMSrcMem, (outs VR128X:$dst),
(loadv2i64 addr:$src))))],
IIC_SSE_MOVDQ>, EVEX, VEX_W,
EVEX_CD8<8, CD8VT8>;
let AddedComplexity = 20 in {
def : Pat<(v2i64 (X86vzmovl (loadv2i64 addr:$src))),
let Predicates = [HasAVX512] in {
// AVX 128-bit movd/movq instruction write zeros in the high 128-bit part.
let AddedComplexity = 20 in {
def : Pat<(v4i32 (X86vzmovl (v4i32 (scalar_to_vector (loadi32 addr:$src))))),
(VMOVDI2PDIZrm addr:$src)>;
def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv4f32 addr:$src)))),
(VMOVDI2PDIZrm addr:$src)>;
def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv2i64 addr:$src)))),
(VMOVDI2PDIZrm addr:$src)>;
def : Pat<(v2i64 (X86vzmovl (loadv2i64 addr:$src))),
(VMOVZPQILo2PQIZrm addr:$src)>;
def : Pat<(v2f64 (X86vzmovl (v2f64 VR128X:$src))),
def : Pat<(v2f64 (X86vzmovl (v2f64 VR128X:$src))),
(VMOVZPQILo2PQIZrr VR128X:$src)>;
}
// Use regular 128-bit instructions to match 256-bit scalar_to_vec+zext.
def : Pat<(v8i32 (X86vzmovl (insert_subvector undef,
(v4i32 (scalar_to_vector GR32:$src)),(iPTR 0)))),
(SUBREG_TO_REG (i32 0), (VMOVDI2PDIZrr GR32:$src), sub_xmm)>;
def : Pat<(v4i64 (X86vzmovl (insert_subvector undef,
(v2i64 (scalar_to_vector GR64:$src)),(iPTR 0)))),
(SUBREG_TO_REG (i64 0), (VMOV64toPQIZrr GR64:$src), sub_xmm)>;
}
//===----------------------------------------------------------------------===//

2
llvm/lib/Target/X86/X86InstrSSE.td
View File

@ -526,7 +526,7 @@ let canFoldAsLoad = 1, isReMaterializable = 1 in {
}
// Patterns
let Predicates = [HasAVX] in {
let Predicates = [UseAVX] in {
let AddedComplexity = 15 in {
// Move scalar to XMM zero-extended, zeroing a VR128 then do a
// MOVS{S,D} to the lower bits.

27
llvm/test/CodeGen/X86/avx512-mov.ll
View File

@ -73,3 +73,30 @@ define i64 @test9(<2 x i64> %x) {
%res = extractelement <2 x i64> %x, i32 0
ret i64 %res
}
; CHECK-LABEL: @test10
; CHECK: vmovdz (%rdi)
; CHECK: ret
define <4 x i32> @test10(i32* %x) {
%y = load i32* %x, align 4
%res = insertelement <4 x i32>zeroinitializer, i32 %y, i32 0
ret <4 x i32>%res
}
; CHECK-LABEL: @test11
; CHECK: vmovssz (%rdi)
; CHECK: ret
define <4 x float> @test11(float* %x) {
%y = load float* %x, align 4
%res = insertelement <4 x float>zeroinitializer, float %y, i32 0
ret <4 x float>%res
}
; CHECK-LABEL: @test12
; CHECK: vmovsdz (%rdi)
; CHECK: ret
define <2 x double> @test12(double* %x) {
%y = load double* %x, align 8
%res = insertelement <2 x double>zeroinitializer, double %y, i32 0
ret <2 x double>%res
}