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llvm-6502/test/CodeGen/X86/sse3.ll
Evan Cheng 623a7e146b Use a bigger hammer to fix PR11314 by disabling the "forcing two-address 
instruction lower optimization" in the pre-RA scheduler.

The optimization, rather the hack, was done before MI use-list was available.
Now we should be able to implement it in a better way, perhaps in the
two-address pass until a MI scheduler is available.

Now that the scheduler has to backtrack to handle call sequences. Adding
artificial scheduling constraints is just not safe. Furthermore, the hack
is not taking all the other scheduling decisions into consideration so it's just
as likely to pessimize code. So I view disabling this optimization goodness
regardless of PR11314.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144267 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-10 07:43:16 +00:00

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; These are tests for SSE3 codegen.
; RUN: llc < %s -march=x86-64 -mcpu=nocona -mtriple=i686-apple-darwin9 -O3 \
; RUN: | 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 {
entry:
%tmp3 = load <8 x i16>* %old
%tmp6 = shufflevector <8 x i16> %tmp3,
<8 x i16> < i16 0, 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
; X64: t0:
; X64: movdqa (%rsi), %xmm0
; X64: pslldq $2, %xmm0
; X64: movdqa %xmm0, (%rdi)
; X64: ret
}
define <8 x i16> @t1(<8 x i16>* %A, <8 x i16>* %B) nounwind {
%tmp1 = load <8 x i16>* %A
%tmp2 = load <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
; X64: t1:
; X64: movdqa (%rdi), %xmm0
; X64: pinsrw $0, (%rsi), %xmm0
; X64: ret
}
define <8 x i16> @t2(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t2:
; X64: pextrw $1, %xmm1, %eax
; X64: pinsrw $0, %eax, %xmm0
; X64: pinsrw $3, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t3(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t3:
; X64: pextrw $5, %xmm0, %eax
; X64: pshuflw $44, %xmm0, %xmm0
; X64: pshufhw $27, %xmm0, %xmm0
; X64: pinsrw $3, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t4(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t4:
; X64: pextrw $7, [[XMM0:%xmm[0-9]+]], %eax
; X64: pshufhw $100, [[XMM0]], [[XMM1:%xmm[0-9]+]]
; X64: pinsrw $1, %eax, [[XMM1]]
; X64: pextrw $1, [[XMM0]], %eax
; X64: pinsrw $4, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t5(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t5:
; X64: movlhps %xmm1, %xmm0
; X64: pshufd $114, %xmm0, %xmm0
; X64: ret
}
define <8 x i16> @t6(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t6:
; X64: movss %xmm1, %xmm0
; X64: ret
}
define <8 x i16> @t7(<8 x i16> %A, <8 x i16> %B) nounwind {
%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
; X64: t7:
; X64: pshuflw $-80, %xmm0, %xmm0
; X64: pshufhw $-56, %xmm0, %xmm0
; X64: ret
}
define void @t8(<2 x i64>* %res, <2 x i64>* %A) nounwind {
%tmp = load <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
; X64: t8:
; X64: pshuflw $-58, (%rsi), %xmm0
; X64: pshufhw $-58, %xmm0, %xmm0
; X64: movdqa %xmm0, (%rdi)
; X64: ret
}
define void @t9(<4 x float>* %r, <2 x i32>* %A) nounwind {
%tmp = load <4 x float>* %r
%tmp.upgrd.3 = bitcast <2 x i32>* %A to double*
%tmp.upgrd.4 = load 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
; X64: t9:
; X64: movaps (%rdi), %xmm0
; X64: movhps (%rsi), %xmm0
; X64: movaps %xmm0, (%rdi)
; X64: ret
}
; 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 internal void @t10() nounwind {
load <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
; X64: t10:
; X64: pextrw $4, [[X0:%xmm[0-9]+]], %eax
; X64: movlhps [[X1:%xmm[0-9]+]]
; X64: pshuflw $8, [[X1]], [[X2:%xmm[0-9]+]]
; X64: pinsrw $2, %eax, [[X2]]
; X64: pextrw $6, [[X0]], %eax
; X64: pinsrw $3, %eax, [[X2]]
}
; Pack various elements via shuffles.
define <8 x i16> @t11(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
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
; X64: t11:
; X64: movd %xmm1, %eax
; X64: movlhps %xmm0, %xmm0
; X64: pshuflw $1, %xmm0, %xmm0
; X64: pinsrw $1, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t12(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
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
; X64: t12:
; X64: pextrw $3, %xmm1, %eax
; X64: movlhps %xmm0, %xmm0
; X64: pshufhw $3, %xmm0, %xmm0
; X64: pinsrw $5, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t13(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
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
; X64: t13:
; X64: punpcklqdq %xmm0, %xmm1
; X64: pextrw $3, %xmm1, %eax
; X64: pshufd $52, %xmm1, %xmm0
; X64: pinsrw $4, %eax, %xmm0
; X64: ret
}
define <8 x i16> @t14(<8 x i16> %T0, <8 x i16> %T1) nounwind readnone {
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
; X64: t14:
; X64: punpcklqdq %xmm0, %xmm1
; X64: pshufhw $8, %xmm1, %xmm0
; X64: ret
}
; 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 {
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
; X64: t15:
; X64: movdqa %xmm0, %xmm2
; X64: punpcklqdq %xmm1, %xmm0
; X64: pshuflw $-128, %xmm0, %xmm0
; X64: pextrw $7, %xmm2, %eax
; X64: pinsrw $2, %eax, %xmm0
; X64: ret
}
; Test yonah where we convert a shuffle to pextrw and pinrsw
define <16 x i8> @t16(<16 x i8> %T0) nounwind readnone {
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
; X64: t16:
; X64: movdqa %xmm1, %xmm2
; X64: pslldq $2, %xmm2
; X64: movd %xmm2, %eax
; X64: pinsrw $0, %eax, %xmm0
; X64: pextrw $8, %xmm1, %eax
; X64: pextrw $1, %xmm2, %ecx
; X64: ret
}
; rdar://8520311
define <4 x i32> @t17() nounwind {
entry:
; X64: t17:
; X64: movddup (%rax), %xmm0
%tmp1 = load <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>* 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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