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llvm-6502/test/CodeGen/ARM64/dup.ll
Tim Northover 70b63374f2 ARM64: implement cunning optimisation from AArch64 
A vector extract followed by a dup can become a single instruction even if the
types don't match. AArch64 handled this in ISelLowering, but a few reasonably
simple patterns can take care of it in TableGen, so that's where I've put it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206573 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-18 09:31:20 +00:00

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; RUN: llc < %s -march=arm64 -arm64-neon-syntax=apple -asm-verbose=false | FileCheck %s
define <8 x i8> @v_dup8(i8 %A) nounwind {
;CHECK-LABEL: v_dup8:
;CHECK: dup.8b
%tmp1 = insertelement <8 x i8> zeroinitializer, i8 %A, i32 0
%tmp2 = insertelement <8 x i8> %tmp1, i8 %A, i32 1
%tmp3 = insertelement <8 x i8> %tmp2, i8 %A, i32 2
%tmp4 = insertelement <8 x i8> %tmp3, i8 %A, i32 3
%tmp5 = insertelement <8 x i8> %tmp4, i8 %A, i32 4
%tmp6 = insertelement <8 x i8> %tmp5, i8 %A, i32 5
%tmp7 = insertelement <8 x i8> %tmp6, i8 %A, i32 6
%tmp8 = insertelement <8 x i8> %tmp7, i8 %A, i32 7
ret <8 x i8> %tmp8
}
define <4 x i16> @v_dup16(i16 %A) nounwind {
;CHECK-LABEL: v_dup16:
;CHECK: dup.4h
%tmp1 = insertelement <4 x i16> zeroinitializer, i16 %A, i32 0
%tmp2 = insertelement <4 x i16> %tmp1, i16 %A, i32 1
%tmp3 = insertelement <4 x i16> %tmp2, i16 %A, i32 2
%tmp4 = insertelement <4 x i16> %tmp3, i16 %A, i32 3
ret <4 x i16> %tmp4
}
define <2 x i32> @v_dup32(i32 %A) nounwind {
;CHECK-LABEL: v_dup32:
;CHECK: dup.2s
%tmp1 = insertelement <2 x i32> zeroinitializer, i32 %A, i32 0
%tmp2 = insertelement <2 x i32> %tmp1, i32 %A, i32 1
ret <2 x i32> %tmp2
}
define <2 x float> @v_dupfloat(float %A) nounwind {
;CHECK-LABEL: v_dupfloat:
;CHECK: dup.2s
%tmp1 = insertelement <2 x float> zeroinitializer, float %A, i32 0
%tmp2 = insertelement <2 x float> %tmp1, float %A, i32 1
ret <2 x float> %tmp2
}
define <16 x i8> @v_dupQ8(i8 %A) nounwind {
;CHECK-LABEL: v_dupQ8:
;CHECK: dup.16b
%tmp1 = insertelement <16 x i8> zeroinitializer, i8 %A, i32 0
%tmp2 = insertelement <16 x i8> %tmp1, i8 %A, i32 1
%tmp3 = insertelement <16 x i8> %tmp2, i8 %A, i32 2
%tmp4 = insertelement <16 x i8> %tmp3, i8 %A, i32 3
%tmp5 = insertelement <16 x i8> %tmp4, i8 %A, i32 4
%tmp6 = insertelement <16 x i8> %tmp5, i8 %A, i32 5
%tmp7 = insertelement <16 x i8> %tmp6, i8 %A, i32 6
%tmp8 = insertelement <16 x i8> %tmp7, i8 %A, i32 7
%tmp9 = insertelement <16 x i8> %tmp8, i8 %A, i32 8
%tmp10 = insertelement <16 x i8> %tmp9, i8 %A, i32 9
%tmp11 = insertelement <16 x i8> %tmp10, i8 %A, i32 10
%tmp12 = insertelement <16 x i8> %tmp11, i8 %A, i32 11
%tmp13 = insertelement <16 x i8> %tmp12, i8 %A, i32 12
%tmp14 = insertelement <16 x i8> %tmp13, i8 %A, i32 13
%tmp15 = insertelement <16 x i8> %tmp14, i8 %A, i32 14
%tmp16 = insertelement <16 x i8> %tmp15, i8 %A, i32 15
ret <16 x i8> %tmp16
}
define <8 x i16> @v_dupQ16(i16 %A) nounwind {
;CHECK-LABEL: v_dupQ16:
;CHECK: dup.8h
%tmp1 = insertelement <8 x i16> zeroinitializer, i16 %A, i32 0
%tmp2 = insertelement <8 x i16> %tmp1, i16 %A, i32 1
%tmp3 = insertelement <8 x i16> %tmp2, i16 %A, i32 2
%tmp4 = insertelement <8 x i16> %tmp3, i16 %A, i32 3
%tmp5 = insertelement <8 x i16> %tmp4, i16 %A, i32 4
%tmp6 = insertelement <8 x i16> %tmp5, i16 %A, i32 5
%tmp7 = insertelement <8 x i16> %tmp6, i16 %A, i32 6
%tmp8 = insertelement <8 x i16> %tmp7, i16 %A, i32 7
ret <8 x i16> %tmp8
}
define <4 x i32> @v_dupQ32(i32 %A) nounwind {
;CHECK-LABEL: v_dupQ32:
;CHECK: dup.4s
%tmp1 = insertelement <4 x i32> zeroinitializer, i32 %A, i32 0
%tmp2 = insertelement <4 x i32> %tmp1, i32 %A, i32 1
%tmp3 = insertelement <4 x i32> %tmp2, i32 %A, i32 2
%tmp4 = insertelement <4 x i32> %tmp3, i32 %A, i32 3
ret <4 x i32> %tmp4
}
define <4 x float> @v_dupQfloat(float %A) nounwind {
;CHECK-LABEL: v_dupQfloat:
;CHECK: dup.4s
%tmp1 = insertelement <4 x float> zeroinitializer, float %A, i32 0
%tmp2 = insertelement <4 x float> %tmp1, float %A, i32 1
%tmp3 = insertelement <4 x float> %tmp2, float %A, i32 2
%tmp4 = insertelement <4 x float> %tmp3, float %A, i32 3
ret <4 x float> %tmp4
}
; Check to make sure it works with shuffles, too.
define <8 x i8> @v_shuffledup8(i8 %A) nounwind {
;CHECK-LABEL: v_shuffledup8:
;CHECK: dup.8b
%tmp1 = insertelement <8 x i8> undef, i8 %A, i32 0
%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> zeroinitializer
ret <8 x i8> %tmp2
}
define <4 x i16> @v_shuffledup16(i16 %A) nounwind {
;CHECK-LABEL: v_shuffledup16:
;CHECK: dup.4h
%tmp1 = insertelement <4 x i16> undef, i16 %A, i32 0
%tmp2 = shufflevector <4 x i16> %tmp1, <4 x i16> undef, <4 x i32> zeroinitializer
ret <4 x i16> %tmp2
}
define <2 x i32> @v_shuffledup32(i32 %A) nounwind {
;CHECK-LABEL: v_shuffledup32:
;CHECK: dup.2s
%tmp1 = insertelement <2 x i32> undef, i32 %A, i32 0
%tmp2 = shufflevector <2 x i32> %tmp1, <2 x i32> undef, <2 x i32> zeroinitializer
ret <2 x i32> %tmp2
}
define <2 x float> @v_shuffledupfloat(float %A) nounwind {
;CHECK-LABEL: v_shuffledupfloat:
;CHECK: dup.2s
%tmp1 = insertelement <2 x float> undef, float %A, i32 0
%tmp2 = shufflevector <2 x float> %tmp1, <2 x float> undef, <2 x i32> zeroinitializer
ret <2 x float> %tmp2
}
define <16 x i8> @v_shuffledupQ8(i8 %A) nounwind {
;CHECK-LABEL: v_shuffledupQ8:
;CHECK: dup.16b
%tmp1 = insertelement <16 x i8> undef, i8 %A, i32 0
%tmp2 = shufflevector <16 x i8> %tmp1, <16 x i8> undef, <16 x i32> zeroinitializer
ret <16 x i8> %tmp2
}
define <8 x i16> @v_shuffledupQ16(i16 %A) nounwind {
;CHECK-LABEL: v_shuffledupQ16:
;CHECK: dup.8h
%tmp1 = insertelement <8 x i16> undef, i16 %A, i32 0
%tmp2 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <8 x i32> zeroinitializer
ret <8 x i16> %tmp2
}
define <4 x i32> @v_shuffledupQ32(i32 %A) nounwind {
;CHECK-LABEL: v_shuffledupQ32:
;CHECK: dup.4s
%tmp1 = insertelement <4 x i32> undef, i32 %A, i32 0
%tmp2 = shufflevector <4 x i32> %tmp1, <4 x i32> undef, <4 x i32> zeroinitializer
ret <4 x i32> %tmp2
}
define <4 x float> @v_shuffledupQfloat(float %A) nounwind {
;CHECK-LABEL: v_shuffledupQfloat:
;CHECK: dup.4s
%tmp1 = insertelement <4 x float> undef, float %A, i32 0
%tmp2 = shufflevector <4 x float> %tmp1, <4 x float> undef, <4 x i32> zeroinitializer
ret <4 x float> %tmp2
}
define <8 x i8> @vduplane8(<8 x i8>* %A) nounwind {
;CHECK-LABEL: vduplane8:
;CHECK: dup.8b
%tmp1 = load <8 x i8>* %A
%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> < i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1 >
ret <8 x i8> %tmp2
}
define <4 x i16> @vduplane16(<4 x i16>* %A) nounwind {
;CHECK-LABEL: vduplane16:
;CHECK: dup.4h
%tmp1 = load <4 x i16>* %A
%tmp2 = shufflevector <4 x i16> %tmp1, <4 x i16> undef, <4 x i32> < i32 1, i32 1, i32 1, i32 1 >
ret <4 x i16> %tmp2
}
define <2 x i32> @vduplane32(<2 x i32>* %A) nounwind {
;CHECK-LABEL: vduplane32:
;CHECK: dup.2s
%tmp1 = load <2 x i32>* %A
%tmp2 = shufflevector <2 x i32> %tmp1, <2 x i32> undef, <2 x i32> < i32 1, i32 1 >
ret <2 x i32> %tmp2
}
define <2 x float> @vduplanefloat(<2 x float>* %A) nounwind {
;CHECK-LABEL: vduplanefloat:
;CHECK: dup.2s
%tmp1 = load <2 x float>* %A
%tmp2 = shufflevector <2 x float> %tmp1, <2 x float> undef, <2 x i32> < i32 1, i32 1 >
ret <2 x float> %tmp2
}
define <16 x i8> @vduplaneQ8(<8 x i8>* %A) nounwind {
;CHECK-LABEL: vduplaneQ8:
;CHECK: dup.16b
%tmp1 = load <8 x i8>* %A
%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <16 x i32> < i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1 >
ret <16 x i8> %tmp2
}
define <8 x i16> @vduplaneQ16(<4 x i16>* %A) nounwind {
;CHECK-LABEL: vduplaneQ16:
;CHECK: dup.8h
%tmp1 = load <4 x i16>* %A
%tmp2 = shufflevector <4 x i16> %tmp1, <4 x i16> undef, <8 x i32> < i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1 >
ret <8 x i16> %tmp2
}
define <4 x i32> @vduplaneQ32(<2 x i32>* %A) nounwind {
;CHECK-LABEL: vduplaneQ32:
;CHECK: dup.4s
%tmp1 = load <2 x i32>* %A
%tmp2 = shufflevector <2 x i32> %tmp1, <2 x i32> undef, <4 x i32> < i32 1, i32 1, i32 1, i32 1 >
ret <4 x i32> %tmp2
}
define <4 x float> @vduplaneQfloat(<2 x float>* %A) nounwind {
;CHECK-LABEL: vduplaneQfloat:
;CHECK: dup.4s
%tmp1 = load <2 x float>* %A
%tmp2 = shufflevector <2 x float> %tmp1, <2 x float> undef, <4 x i32> < i32 1, i32 1, i32 1, i32 1 >
ret <4 x float> %tmp2
}
define <2 x i64> @foo(<2 x i64> %arg0_int64x1_t) nounwind readnone {
;CHECK-LABEL: foo:
;CHECK: dup.2d
entry:
%0 = shufflevector <2 x i64> %arg0_int64x1_t, <2 x i64> undef, <2 x i32> <i32 1, i32 1>
ret <2 x i64> %0
}
define <2 x i64> @bar(<2 x i64> %arg0_int64x1_t) nounwind readnone {
;CHECK-LABEL: bar:
;CHECK: dup.2d
entry:
%0 = shufflevector <2 x i64> %arg0_int64x1_t, <2 x i64> undef, <2 x i32> <i32 0, i32 0>
ret <2 x i64> %0
}
define <2 x double> @baz(<2 x double> %arg0_int64x1_t) nounwind readnone {
;CHECK-LABEL: baz:
;CHECK: dup.2d
entry:
%0 = shufflevector <2 x double> %arg0_int64x1_t, <2 x double> undef, <2 x i32> <i32 1, i32 1>
ret <2 x double> %0
}
define <2 x double> @qux(<2 x double> %arg0_int64x1_t) nounwind readnone {
;CHECK-LABEL: qux:
;CHECK: dup.2d
entry:
%0 = shufflevector <2 x double> %arg0_int64x1_t, <2 x double> undef, <2 x i32> <i32 0, i32 0>
ret <2 x double> %0
}
define <2 x i32> @f(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: f:
; CHECK-NEXT: fmov s0, w0
; CHECK-NEXT: ins.s v0[1], w1
; CHECK-NEXT: ret
%vecinit = insertelement <2 x i32> undef, i32 %a, i32 0
%vecinit1 = insertelement <2 x i32> %vecinit, i32 %b, i32 1
ret <2 x i32> %vecinit1
}
define <4 x i32> @g(i32 %a, i32 %b) nounwind readnone {
; CHECK-LABEL: g:
; CHECK-NEXT: fmov s0, w0
; CHECK-NEXT: ins.s v0[1], w1
; CHECK-NEXT: ins.s v0[2], w1
; CHECK-NEXT: ins.s v0[3], w0
; CHECK-NEXT: ret
%vecinit = insertelement <4 x i32> undef, i32 %a, i32 0
%vecinit1 = insertelement <4 x i32> %vecinit, i32 %b, i32 1
%vecinit2 = insertelement <4 x i32> %vecinit1, i32 %b, i32 2
%vecinit3 = insertelement <4 x i32> %vecinit2, i32 %a, i32 3
ret <4 x i32> %vecinit3
}
define <2 x i64> @h(i64 %a, i64 %b) nounwind readnone {
; CHECK-LABEL: h:
; CHECK-NEXT: fmov d0, x0
; CHECK-NEXT: ins.d v0[1], x1
; CHECK-NEXT: ret
%vecinit = insertelement <2 x i64> undef, i64 %a, i32 0
%vecinit1 = insertelement <2 x i64> %vecinit, i64 %b, i32 1
ret <2 x i64> %vecinit1
}
; We used to spot this as a BUILD_VECTOR implementable by dup, but assume that
; the single value needed was of the same type as the vector. This is false if
; the scalar corresponding to the vector type is illegal (e.g. a <4 x i16>
; BUILD_VECTOR will have an i32 as its source). In that case, the operation is
; not a simple "dup vD.4h, vN.h[idx]" after all, and we crashed.
;
; *However*, it is a dup vD.4h, vN.h[2*idx].
define <4 x i16> @test_build_illegal(<4 x i32> %in) {
; CHECK-LABEL: test_build_illegal:
; CHECK: dup.4h v0, v0[6]
%val = extractelement <4 x i32> %in, i32 3
%smallval = trunc i32 %val to i16
%vec = insertelement <4x i16> undef, i16 %smallval, i32 3
ret <4 x i16> %vec
}
; We used to inherit an already extract_subvectored v4i16 from
; SelectionDAGBuilder here. We then added a DUPLANE on top of that, preventing
; the formation of an indexed-by-7 MLS.
define <4 x i16> @test_high_splat(<4 x i16> %a, <4 x i16> %b, <8 x i16> %v) #0 {
; CHECK-LABEL: test_high_splat:
; CHECK: mls.4h v0, v1, v2[7]
entry:
%shuffle = shufflevector <8 x i16> %v, <8 x i16> undef, <4 x i32> <i32 7, i32 7, i32 7, i32 7>
%mul = mul <4 x i16> %shuffle, %b
%sub = sub <4 x i16> %a, %mul
ret <4 x i16> %sub
}
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