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Add patterns for converting stores of subvector_extracts of lower 128-bits of a 256-bit vector to VMOVAPSmr/VMOVUPSmr.

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llvm-svn: 163292
This commit is contained in:
Craig Topper 2012-09-06 05:15:01 +00:00
parent 855092deca
commit b2bad42f00
2 changed files with 91 additions and 9 deletions
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40
lib/Target/X86/X86InstrSSE.td
View File

@ -1019,6 +1019,46 @@ let Predicates = [HasAVX] in {
(VMOVUPSYmr addr:$dst, VR256:$src)>;
def : Pat<(store (v32i8 VR256:$src), addr:$dst),
(VMOVUPSYmr addr:$dst, VR256:$src)>;
// Special patterns for storing subvector extracts of lower 128-bits
// Its cheaper to just use VMOVAPS/VMOVUPS instead of VEXTRACTF128mr
def : Pat<(alignedstore (v2f64 (extract_subvector
(v4f64 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPDmr addr:$dst, (v2f64 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(alignedstore (v4f32 (extract_subvector
(v8f32 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPSmr addr:$dst, (v4f32 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(alignedstore (v2i64 (extract_subvector
(v4i64 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPDmr addr:$dst, (v2i64 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(alignedstore (v4i32 (extract_subvector
(v8i32 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPSmr addr:$dst, (v4i32 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(alignedstore (v8i16 (extract_subvector
(v16i16 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPSmr addr:$dst, (v8i16 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(alignedstore (v16i8 (extract_subvector
(v32i8 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPSmr addr:$dst, (v16i8 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v2f64 (extract_subvector
(v4f64 VR256:$src), (i32 0))), addr:$dst),
(VMOVUPDmr addr:$dst, (v2f64 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v4f32 (extract_subvector
(v8f32 VR256:$src), (i32 0))), addr:$dst),
(VMOVUPSmr addr:$dst, (v4f32 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v2i64 (extract_subvector
(v4i64 VR256:$src), (i32 0))), addr:$dst),
(VMOVUPDmr addr:$dst, (v2i64 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v4i32 (extract_subvector
(v8i32 VR256:$src), (i32 0))), addr:$dst),
(VMOVUPSmr addr:$dst, (v4i32 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v8i16 (extract_subvector
(v16i16 VR256:$src), (i32 0))), addr:$dst),
(VMOVAPSmr addr:$dst, (v8i16 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
def : Pat<(store (v16i8 (extract_subvector
(v32i8 VR256:$src), (i32 0))), addr:$dst),
(VMOVUPSmr addr:$dst, (v16i8 (EXTRACT_SUBREG VR256:$src,sub_xmm)))>;
}
// Use movaps / movups for SSE integer load / store (one byte shorter).

60
test/CodeGen/X86/avx-vextractf128.ll
View File

@ -19,12 +19,12 @@ entry:
}
; CHECK: @t0
; CHECK-NOT: vextractf128 $0, %ymm0, %xmm0
; CHECK-NOT: vextractf128 $1, %ymm0, %xmm0
; CHECK-NOT: vmovaps %xmm0, (%rdi)
; CHECK: vextractf128 $0, %ymm0, (%rdi)
; CHECK: vextractf128 $1, %ymm0, (%rdi)
define void @t0(float* nocapture %addr, <8 x float> %a) nounwind uwtable ssp {
entry:
%0 = tail call <4 x float> @llvm.x86.avx.vextractf128.ps.256(<8 x float> %a, i8 0)
%0 = tail call <4 x float> @llvm.x86.avx.vextractf128.ps.256(<8 x float> %a, i8 1)
%1 = bitcast float* %addr to <4 x float>*
store <4 x float> %0, <4 x float>* %1, align 16
ret void
@ -33,12 +33,12 @@ entry:
declare <4 x float> @llvm.x86.avx.vextractf128.ps.256(<8 x float>, i8) nounwind readnone
; CHECK: @t2
; CHECK-NOT: vextractf128 $0, %ymm0, %xmm0
; CHECK-NOT: vextractf128 $1, %ymm0, %xmm0
; CHECK-NOT: vmovaps %xmm0, (%rdi)
; CHECK: vextractf128 $0, %ymm0, (%rdi)
; CHECK: vextractf128 $1, %ymm0, (%rdi)
define void @t2(double* nocapture %addr, <4 x double> %a) nounwind uwtable ssp {
entry:
%0 = tail call <2 x double> @llvm.x86.avx.vextractf128.pd.256(<4 x double> %a, i8 0)
%0 = tail call <2 x double> @llvm.x86.avx.vextractf128.pd.256(<4 x double> %a, i8 1)
%1 = bitcast double* %addr to <2 x double>*
store <2 x double> %0, <2 x double>* %1, align 16
ret void
@ -47,10 +47,43 @@ entry:
declare <2 x double> @llvm.x86.avx.vextractf128.pd.256(<4 x double>, i8) nounwind readnone
; CHECK: @t4
; CHECK-NOT: vextractf128 $0, %ymm0, %xmm0
; CHECK-NOT: vextractf128 $1, %ymm0, %xmm0
; CHECK-NOT: vmovaps %xmm0, (%rdi)
; CHECK: vextractf128 $0, %ymm0, (%rdi)
; CHECK: vextractf128 $1, %ymm0, (%rdi)
define void @t4(<2 x i64>* nocapture %addr, <4 x i64> %a) nounwind uwtable ssp {
entry:
%0 = bitcast <4 x i64> %a to <8 x i32>
%1 = tail call <4 x i32> @llvm.x86.avx.vextractf128.si.256(<8 x i32> %0, i8 1)
%2 = bitcast <4 x i32> %1 to <2 x i64>
store <2 x i64> %2, <2 x i64>* %addr, align 16
ret void
}
declare <4 x i32> @llvm.x86.avx.vextractf128.si.256(<8 x i32>, i8) nounwind readnone
; CHECK: @t5
; CHECK: vmovaps %xmm0, (%rdi)
define void @t5(float* nocapture %addr, <8 x float> %a) nounwind uwtable ssp {
entry:
%0 = tail call <4 x float> @llvm.x86.avx.vextractf128.ps.256(<8 x float> %a, i8 0)
%1 = bitcast float* %addr to <4 x float>*
store <4 x float> %0, <4 x float>* %1, align 16
ret void
}
; CHECK: @t6
; CHECK: vmovaps %xmm0, (%rdi)
define void @t6(double* nocapture %addr, <4 x double> %a) nounwind uwtable ssp {
entry:
%0 = tail call <2 x double> @llvm.x86.avx.vextractf128.pd.256(<4 x double> %a, i8 0)
%1 = bitcast double* %addr to <2 x double>*
store <2 x double> %0, <2 x double>* %1, align 16
ret void
}
; CHECK: @t7
; CHECK: vmovaps %xmm0, (%rdi)
define void @t7(<2 x i64>* nocapture %addr, <4 x i64> %a) nounwind uwtable ssp {
entry:
%0 = bitcast <4 x i64> %a to <8 x i32>
%1 = tail call <4 x i32> @llvm.x86.avx.vextractf128.si.256(<8 x i32> %0, i8 0)
@ -59,4 +92,13 @@ entry:
ret void
}
declare <4 x i32> @llvm.x86.avx.vextractf128.si.256(<8 x i32>, i8) nounwind readnone
; CHECK: @t8
; CHECK: vmovups %xmm0, (%rdi)
define void @t8(<2 x i64>* nocapture %addr, <4 x i64> %a) nounwind uwtable ssp {
entry:
%0 = bitcast <4 x i64> %a to <8 x i32>
%1 = tail call <4 x i32> @llvm.x86.avx.vextractf128.si.256(<8 x i32> %0, i8 0)
%2 = bitcast <4 x i32> %1 to <2 x i64>
store <2 x i64> %2, <2 x i64>* %addr, align 1
ret void
}