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llvm/test/CodeGen/X86/sse3.ll
Simon Pilgrim f5d0848f55 [X86][SSE] Added support for combining target shuffles to (V)PSHUFD/VPERMILPD/VPERMILPS immediate permutes 
This patch allows target shuffles to be combined to single input immediate permute instructions - (V)PSHUFD/VPERMILPD/VPERMILPS - allowing more general pattern matching than what we current do and improves the likelihood of memory folding compared to existing patterns which tend to reuse the input in multiple arguments.

Further permute instructions (V)PSHUFLW/(V)PSHUFHW/(V)PERMQ/(V)PERMPD may be added in the future but its proven tricky to create tests cases for them so far. (V)PSHUFLW/(V)PSHUFHW is already handled quite well in combineTargetShuffle so it may be that removing some of that code may allow us to perform more of the combining in one place without duplication.

Differential Revision: http://reviews.llvm.org/D21148

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273999 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-28 08:08:15 +00:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; These are tests for SSE3 codegen.
; RUN: llc < %s -mtriple=x86_64-apple-darwin9 --mattr=+sse3 | FileCheck %s --check-prefix=X64
; Test for v8xi16 lowering where we extract the first element of the vector and
; placed it in the second element of the result.
define void @t0(<8 x i16>* %dest, <8 x i16>* %old) nounwind {
; X64-LABEL: t0:
; X64: ## BB#0: ## %entry
; X64-NEXT: movl $1, %eax
; X64-NEXT: movd %eax, %xmm0
; X64-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],mem[0],xmm0[1],mem[1],xmm0[2],mem[2],xmm0[3],mem[3]
; X64-NEXT: movdqa %xmm0, (%rdi)
; X64-NEXT: retq
entry:
%tmp3 = load <8 x i16>, <8 x i16>* %old
%tmp6 = shufflevector <8 x i16> %tmp3,
<8 x i16> < i16 1, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef >,
<8 x i32> < i32 8, i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef >
store <8 x i16> %tmp6, <8 x i16>* %dest
ret void
}
define <8 x i16> @t1(<8 x i16>* %A, <8 x i16>* %B) nounwind {
; X64-LABEL: t1:
; X64: ## BB#0:
; X64-NEXT: movaps {{.*#+}} xmm0 = [0,65535,65535,65535,65535,65535,65535,65535]
; X64-NEXT: movaps %xmm0, %xmm1
; X64-NEXT: andnps (%rsi), %xmm1
; X64-NEXT: andps (%rdi), %xmm0
; X64-NEXT: orps %xmm1, %xmm0
; X64-NEXT: retq
%tmp1 = load <8 x i16>, <8 x i16>* %A
%tmp2 = load <8 x i16>, <8 x i16>* %B
%tmp3 = shufflevector <8 x i16> %tmp1, <8 x i16> %tmp2, <8 x i32> < i32 8, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7 >
ret <8 x i16> %tmp3
}
define <8 x i16> @t2(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t2:
; X64: ## BB#0:
; X64-NEXT: movdqa {{.*#+}} xmm2 = [0,65535,65535,0,65535,65535,65535,65535]
; X64-NEXT: pand %xmm2, %xmm0
; X64-NEXT: pshuflw {{.*#+}} xmm1 = xmm1[1,1,2,1,4,5,6,7]
; X64-NEXT: pandn %xmm1, %xmm2
; X64-NEXT: por %xmm2, %xmm0
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 9, i32 1, i32 2, i32 9, i32 4, i32 5, i32 6, i32 7 >
ret <8 x i16> %tmp
}
define <8 x i16> @t3(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t3:
; X64: ## BB#0:
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[3,1,2,0]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,5,6,5]
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[3,1,2,0]
; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,3,2,1,4,5,6,7]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,7,6,5,4]
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %A, <8 x i32> < i32 8, i32 3, i32 2, i32 13, i32 7, i32 6, i32 5, i32 4 >
ret <8 x i16> %tmp
}
define <8 x i16> @t4(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t4:
; X64: ## BB#0:
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,1,0,3]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,6,5,4,7]
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[3,1,2,0]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,5,7,4,7]
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 0, i32 7, i32 2, i32 3, i32 1, i32 5, i32 6, i32 5 >
ret <8 x i16> %tmp
}
define <8 x i16> @t5(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t5:
; X64: ## BB#0:
; X64-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1]
; X64-NEXT: movdqa %xmm1, %xmm0
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 8, i32 9, i32 0, i32 1, i32 10, i32 11, i32 2, i32 3 >
ret <8 x i16> %tmp
}
define <8 x i16> @t6(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t6:
; X64: ## BB#0:
; X64-NEXT: movss {{.*#+}} xmm0 = xmm1[0],xmm0[1,2,3]
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 8, i32 9, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7 >
ret <8 x i16> %tmp
}
define <8 x i16> @t7(<8 x i16> %A, <8 x i16> %B) nounwind {
; X64-LABEL: t7:
; X64: ## BB#0:
; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,0,3,2,4,5,6,7]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,4,7]
; X64-NEXT: retq
%tmp = shufflevector <8 x i16> %A, <8 x i16> %B, <8 x i32> < i32 0, i32 0, i32 3, i32 2, i32 4, i32 6, i32 4, i32 7 >
ret <8 x i16> %tmp
}
define void @t8(<2 x i64>* %res, <2 x i64>* %A) nounwind {
; X64-LABEL: t8:
; X64: ## BB#0:
; X64-NEXT: pshuflw {{.*#+}} xmm0 = mem[2,1,0,3,4,5,6,7]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,6,5,4,7]
; X64-NEXT: movdqa %xmm0, (%rdi)
; X64-NEXT: retq
%tmp = load <2 x i64>, <2 x i64>* %A
%tmp.upgrd.1 = bitcast <2 x i64> %tmp to <8 x i16>
%tmp0 = extractelement <8 x i16> %tmp.upgrd.1, i32 0
%tmp1 = extractelement <8 x i16> %tmp.upgrd.1, i32 1
%tmp2 = extractelement <8 x i16> %tmp.upgrd.1, i32 2
%tmp3 = extractelement <8 x i16> %tmp.upgrd.1, i32 3
%tmp4 = extractelement <8 x i16> %tmp.upgrd.1, i32 4
%tmp5 = extractelement <8 x i16> %tmp.upgrd.1, i32 5
%tmp6 = extractelement <8 x i16> %tmp.upgrd.1, i32 6
%tmp7 = extractelement <8 x i16> %tmp.upgrd.1, i32 7
%tmp8 = insertelement <8 x i16> undef, i16 %tmp2, i32 0
%tmp9 = insertelement <8 x i16> %tmp8, i16 %tmp1, i32 1
%tmp10 = insertelement <8 x i16> %tmp9, i16 %tmp0, i32 2
%tmp11 = insertelement <8 x i16> %tmp10, i16 %tmp3, i32 3
%tmp12 = insertelement <8 x i16> %tmp11, i16 %tmp6, i32 4
%tmp13 = insertelement <8 x i16> %tmp12, i16 %tmp5, i32 5
%tmp14 = insertelement <8 x i16> %tmp13, i16 %tmp4, i32 6
%tmp15 = insertelement <8 x i16> %tmp14, i16 %tmp7, i32 7
%tmp15.upgrd.2 = bitcast <8 x i16> %tmp15 to <2 x i64>
store <2 x i64> %tmp15.upgrd.2, <2 x i64>* %res
ret void
}
define void @t9(<4 x float>* %r, <2 x i32>* %A) nounwind {
; X64-LABEL: t9:
; X64: ## BB#0:
; X64-NEXT: movapd (%rdi), %xmm0
; X64-NEXT: movhpd {{.*#+}} xmm0 = xmm0[0],mem[0]
; X64-NEXT: movapd %xmm0, (%rdi)
; X64-NEXT: retq
%tmp = load <4 x float>, <4 x float>* %r
%tmp.upgrd.3 = bitcast <2 x i32>* %A to double*
%tmp.upgrd.4 = load double, double* %tmp.upgrd.3
%tmp.upgrd.5 = insertelement <2 x double> undef, double %tmp.upgrd.4, i32 0
%tmp5 = insertelement <2 x double> %tmp.upgrd.5, double undef, i32 1
%tmp6 = bitcast <2 x double> %tmp5 to <4 x float>
%tmp.upgrd.6 = extractelement <4 x float> %tmp, i32 0
%tmp7 = extractelement <4 x float> %tmp, i32 1
%tmp8 = extractelement <4 x float> %tmp6, i32 0
%tmp9 = extractelement <4 x float> %tmp6, i32 1
%tmp10 = insertelement <4 x float> undef, float %tmp.upgrd.6, i32 0
%tmp11 = insertelement <4 x float> %tmp10, float %tmp7, i32 1
%tmp12 = insertelement <4 x float> %tmp11, float %tmp8, i32 2
%tmp13 = insertelement <4 x float> %tmp12, float %tmp9, i32 3
store <4 x float> %tmp13, <4 x float>* %r
ret void
}
; FIXME: This testcase produces icky code. It can be made much better!
; PR2585
@g1 = external constant <4 x i32>
@g2 = external constant <4 x i16>
define void @t10() nounwind {
; X64-LABEL: t10:
; X64: ## BB#0:
; X64-NEXT: movq _g1@{{.*}}(%rip), %rax
; X64-NEXT: pshuflw {{.*#+}} xmm0 = mem[0,2,2,3,4,5,6,7]
; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; X64-NEXT: movq _g2@{{.*}}(%rip), %rax
; X64-NEXT: movq %xmm0, (%rax)
; X64-NEXT: retq
load <4 x i32>, <4 x i32>* @g1, align 16
bitcast <4 x i32> %1 to <8 x i16>
shufflevector <8 x i16> %2, <8 x i16> undef, <8 x i32> < i32 0, i32 2, i32 4, i32 6, i32 undef, i32 undef, i32 undef, i32 undef >
bitcast <8 x i16> %3 to <2 x i64>
extractelement <2 x i64> %4, i32 0
bitcast i64 %5 to <4 x i16>
store <4 x i16> %6, <4 x i16>* @g2, align 8
ret void
}
; Pack various elements via shuffles.
define <8 x i16> @t11(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
; X64-LABEL: t11:
; X64: ## BB#0: ## %entry
; X64-NEXT: psrld $16, %xmm0
; X64-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
; X64-NEXT: retq
entry:
%tmp7 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 1, i32 8, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef , i32 undef >
ret <8 x i16> %tmp7
}
define <8 x i16> @t12(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
; X64-LABEL: t12:
; X64: ## BB#0: ## %entry
; X64-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,3,3]
; X64-NEXT: retq
entry:
%tmp9 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 0, i32 1, i32 undef, i32 undef, i32 3, i32 11, i32 undef , i32 undef >
ret <8 x i16> %tmp9
}
define <8 x i16> @t13(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
; X64-LABEL: t13:
; X64: ## BB#0: ## %entry
; X64-NEXT: punpcklwd {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1],xmm1[2],xmm0[2],xmm1[3],xmm0[3]
; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm1[0,2,2,3,4,5,6,7]
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,3,3]
; X64-NEXT: retq
entry:
%tmp9 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 8, i32 9, i32 undef, i32 undef, i32 11, i32 3, i32 undef , i32 undef >
ret <8 x i16> %tmp9
}
define <8 x i16> @t14(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
; X64-LABEL: t14:
; X64: ## BB#0: ## %entry
; X64-NEXT: psrlq $16, %xmm0
; X64-NEXT: punpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm0[0]
; X64-NEXT: movdqa %xmm1, %xmm0
; X64-NEXT: retq
entry:
%tmp9 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 8, i32 9, i32 undef, i32 undef, i32 undef, i32 2, i32 undef , i32 undef >
ret <8 x i16> %tmp9
}
; FIXME: t15 is worse off from disabling of scheduler 2-address hack.
define <8 x i16> @t15(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
; X64-LABEL: t15:
; X64: ## BB#0: ## %entry
; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[3,1,2,3]
; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,1,1,2,4,5,6,7]
; X64-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; X64-NEXT: retq
entry:
%tmp8 = shufflevector <8 x i16> %T0, <8 x i16> %T1, <8 x i32> < i32 undef, i32 undef, i32 7, i32 2, i32 8, i32 undef, i32 undef , i32 undef >
ret <8 x i16> %tmp8
}
; Test yonah where we convert a shuffle to pextrw and pinrsw
define <16 x i8> @t16(<16 x i8> %T0) nounwind readnone {
; X64-LABEL: t16:
; X64: ## BB#0: ## %entry
; X64-NEXT: movdqa {{.*#+}} xmm1 = [0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0]
; X64-NEXT: punpcklwd {{.*#+}} xmm1 = xmm1[0],xmm0[0],xmm1[1],xmm0[1],xmm1[2],xmm0[2],xmm1[3],xmm0[3]
; X64-NEXT: movdqa %xmm1, %xmm0
; X64-NEXT: retq
entry:
%tmp8 = shufflevector <16 x i8> <i8 0, i8 0, i8 0, i8 0, i8 1, i8 1, i8 1, i8 1, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0>, <16 x i8> %T0, <16 x i32> < i32 0, i32 1, i32 16, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef , i32 undef >
%tmp9 = shufflevector <16 x i8> %tmp8, <16 x i8> %T0, <16 x i32> < i32 0, i32 1, i32 2, i32 17, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef , i32 undef >
ret <16 x i8> %tmp9
}
; rdar://8520311
define <4 x i32> @t17() nounwind {
; X64-LABEL: t17:
; X64: ## BB#0: ## %entry
; X64-NEXT: movaps (%rax), %xmm0
; X64-NEXT: unpcklps {{.*#+}} xmm0 = xmm0[0,0,1,1]
; X64-NEXT: pxor %xmm1, %xmm1
; X64-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
; X64-NEXT: retq
entry:
%tmp1 = load <4 x float>, <4 x float>* undef, align 16
%tmp2 = shufflevector <4 x float> %tmp1, <4 x float> undef, <4 x i32> <i32 4, i32 1, i32 2, i32 3>
%tmp3 = load <4 x float>, <4 x float>* undef, align 16
%tmp4 = shufflevector <4 x float> %tmp2, <4 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 0, i32 1>
%tmp5 = bitcast <4 x float> %tmp3 to <4 x i32>
%tmp6 = shufflevector <4 x i32> %tmp5, <4 x i32> undef, <4 x i32> <i32 undef, i32 undef, i32 0, i32 1>
%tmp7 = and <4 x i32> %tmp6, <i32 undef, i32 undef, i32 -1, i32 0>
ret <4 x i32> %tmp7
}
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