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llvm-mirror/test/CodeGen/ARM/vzip.ll
Matt Arsenault 099f4c5254 Introduce target hook for optimizing register copies 
Allow a target to do something other than search for copies
that will avoid cross register bank copies.

Implement for SI by only rewriting the most basic copies,
so it should look through anything like a subregister extract.

I'm not entirely satisified with this because it seems like
eliminating a reg_sequence that isn't fully used should work
generically for all targets without them having to override
something. However, it seems to be tricky to have a simple
implementation of this without rewriting to invalid  kinds
of subregister copies on some targets.

I'm not sure if there is currently a generic way to easily check
if a subregister index would be valid for the current use.
The current set of TargetRegisterInfo::get*Class functions don't
quite behave like I would expect (e.g. getSubClassWithSubReg
returns the maximal register class rather than the minimal), so
I'm not sure how to make the generic test keep searching if
SrcRC:SrcSubReg is a valid replacement for DefRC:DefSubReg. Making
the default implementation to check for simple copies breaks
a variety of ARM and x86 tests by producing illegal subregister uses.

The ARM tests are not actually changed since it should still be using
the same sharesSameRegisterFile implementation, this just relaxes
them to not check for specific registers.

llvm-svn: 248478
2015-09-24 08:36:14 +00:00

319 lines
13 KiB
LLVM
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; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o - | FileCheck %s
define <8 x i8> @vzipi8(<8 x i8>* %A, <8 x i8>* %B) nounwind {
; CHECK-LABEL: vzipi8:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr d16, [r1]
; CHECK-NEXT: vldr d17, [r0]
; CHECK-NEXT: vzip.8 d17, d16
; CHECK-NEXT: vadd.i8 d16, d17, d16
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: mov pc, lr
%tmp1 = load <8 x i8>, <8 x i8>* %A
%tmp2 = load <8 x i8>, <8 x i8>* %B
%tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <8 x i32> <i32 0, i32 8, i32 1, i32 9, i32 2, i32 10, i32 3, i32 11>
%tmp4 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <8 x i32> <i32 4, i32 12, i32 5, i32 13, i32 6, i32 14, i32 7, i32 15>
%tmp5 = add <8 x i8> %tmp3, %tmp4
ret <8 x i8> %tmp5
}
define <16 x i8> @vzipi8_Qres(<8 x i8>* %A, <8 x i8>* %B) nounwind {
; CHECK-LABEL: vzipi8_Qres:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr [[LDR1:d[0-9]+]], [r1]
; CHECK-NEXT: vldr [[LDR0:d[0-9]+]], [r0]
; CHECK-NEXT: vzip.8 [[LDR0]], [[LDR1]]
; CHECK-NEXT: vmov r0, r1, [[LDR0]]
; CHECK-NEXT: vmov r2, r3, [[LDR1]]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <8 x i8>, <8 x i8>* %A
%tmp2 = load <8 x i8>, <8 x i8>* %B
%tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <16 x i32> <i32 0, i32 8, i32 1, i32 9, i32 2, i32 10, i32 3, i32 11, i32 4, i32 12, i32 5, i32 13, i32 6, i32 14, i32 7, i32 15>
ret <16 x i8> %tmp3
}
define <4 x i16> @vzipi16(<4 x i16>* %A, <4 x i16>* %B) nounwind {
; CHECK-LABEL: vzipi16:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr d16, [r1]
; CHECK-NEXT: vldr d17, [r0]
; CHECK-NEXT: vzip.16 d17, d16
; CHECK-NEXT: vadd.i16 d16, d17, d16
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x i16>, <4 x i16>* %A
%tmp2 = load <4 x i16>, <4 x i16>* %B
%tmp3 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <4 x i32> <i32 0, i32 4, i32 1, i32 5>
%tmp4 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <4 x i32> <i32 2, i32 6, i32 3, i32 7>
%tmp5 = add <4 x i16> %tmp3, %tmp4
ret <4 x i16> %tmp5
}
define <8 x i16> @vzipi16_Qres(<4 x i16>* %A, <4 x i16>* %B) nounwind {
; CHECK-LABEL: vzipi16_Qres:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr [[LDR1:d[0-9]+]], [r1]
; CHECK-NEXT: vldr [[LDR0:d[0-9]+]], [r0]
; CHECK-NEXT: vzip.16 [[LDR0]], [[LDR1]]
; CHECK-NEXT: vmov r0, r1, [[LDR0]]
; CHECK-NEXT: vmov r2, r3, [[LDR1]]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x i16>, <4 x i16>* %A
%tmp2 = load <4 x i16>, <4 x i16>* %B
%tmp3 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
ret <8 x i16> %tmp3
}
; VZIP.32 is equivalent to VTRN.32 for 64-bit vectors.
define <16 x i8> @vzipQi8(<16 x i8>* %A, <16 x i8>* %B) nounwind {
; CHECK-LABEL: vzipQi8:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r1]
; CHECK-NEXT: vld1.64 {d18, d19}, [r0]
; CHECK-NEXT: vzip.8 q9, q8
; CHECK-NEXT: vadd.i8 q8, q9, q8
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: vmov r2, r3, d17
; CHECK-NEXT: mov pc, lr
%tmp1 = load <16 x i8>, <16 x i8>* %A
%tmp2 = load <16 x i8>, <16 x i8>* %B
%tmp3 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <16 x i32> <i32 0, i32 16, i32 1, i32 17, i32 2, i32 18, i32 3, i32 19, i32 4, i32 20, i32 5, i32 21, i32 6, i32 22, i32 7, i32 23>
%tmp4 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <16 x i32> <i32 8, i32 24, i32 9, i32 25, i32 10, i32 26, i32 11, i32 27, i32 12, i32 28, i32 13, i32 29, i32 14, i32 30, i32 15, i32 31>
%tmp5 = add <16 x i8> %tmp3, %tmp4
ret <16 x i8> %tmp5
}
define <32 x i8> @vzipQi8_QQres(<16 x i8>* %A, <16 x i8>* %B) nounwind {
; CHECK-LABEL: vzipQi8_QQres:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
; CHECK-NEXT: vzip.8 q9, q8
; CHECK-NEXT: vst1.8 {d18, d19}, [r0:128]!
; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <16 x i8>, <16 x i8>* %A
%tmp2 = load <16 x i8>, <16 x i8>* %B
%tmp3 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <32 x i32> <i32 0, i32 16, i32 1, i32 17, i32 2, i32 18, i32 3, i32 19, i32 4, i32 20, i32 5, i32 21, i32 6, i32 22, i32 7, i32 23, i32 8, i32 24, i32 9, i32 25, i32 10, i32 26, i32 11, i32 27, i32 12, i32 28, i32 13, i32 29, i32 14, i32 30, i32 15, i32 31>
ret <32 x i8> %tmp3
}
define <8 x i16> @vzipQi16(<8 x i16>* %A, <8 x i16>* %B) nounwind {
; CHECK-LABEL: vzipQi16:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r1]
; CHECK-NEXT: vld1.64 {d18, d19}, [r0]
; CHECK-NEXT: vzip.16 q9, q8
; CHECK-NEXT: vadd.i16 q8, q9, q8
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: vmov r2, r3, d17
; CHECK-NEXT: mov pc, lr
%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 0, i32 8, i32 1, i32 9, i32 2, i32 10, i32 3, i32 11>
%tmp4 = shufflevector <8 x i16> %tmp1, <8 x i16> %tmp2, <8 x i32> <i32 4, i32 12, i32 5, i32 13, i32 6, i32 14, i32 7, i32 15>
%tmp5 = add <8 x i16> %tmp3, %tmp4
ret <8 x i16> %tmp5
}
define <16 x i16> @vzipQi16_QQres(<8 x i16>* %A, <8 x i16>* %B) nounwind {
; CHECK-LABEL: vzipQi16_QQres:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
; CHECK-NEXT: vzip.16 q9, q8
; CHECK-NEXT: vst1.16 {d18, d19}, [r0:128]!
; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
; CHECK-NEXT: mov pc, lr
%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, <16 x i32> <i32 0, i32 8, i32 1, i32 9, i32 2, i32 10, i32 3, i32 11, i32 4, i32 12, i32 5, i32 13, i32 6, i32 14, i32 7, i32 15>
ret <16 x i16> %tmp3
}
define <4 x i32> @vzipQi32(<4 x i32>* %A, <4 x i32>* %B) nounwind {
; CHECK-LABEL: vzipQi32:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r1]
; CHECK-NEXT: vld1.64 {d18, d19}, [r0]
; CHECK-NEXT: vzip.32 q9, q8
; CHECK-NEXT: vadd.i32 q8, q9, q8
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: vmov r2, r3, d17
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x i32>, <4 x i32>* %A
%tmp2 = load <4 x i32>, <4 x i32>* %B
%tmp3 = shufflevector <4 x i32> %tmp1, <4 x i32> %tmp2, <4 x i32> <i32 0, i32 4, i32 1, i32 5>
%tmp4 = shufflevector <4 x i32> %tmp1, <4 x i32> %tmp2, <4 x i32> <i32 2, i32 6, i32 3, i32 7>
%tmp5 = add <4 x i32> %tmp3, %tmp4
ret <4 x i32> %tmp5
}
define <8 x i32> @vzipQi32_QQres(<4 x i32>* %A, <4 x i32>* %B) nounwind {
; CHECK-LABEL: vzipQi32_QQres:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
; CHECK-NEXT: vzip.32 q9, q8
; CHECK-NEXT: vst1.32 {d18, d19}, [r0:128]!
; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x i32>, <4 x i32>* %A
%tmp2 = load <4 x i32>, <4 x i32>* %B
%tmp3 = shufflevector <4 x i32> %tmp1, <4 x i32> %tmp2, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
ret <8 x i32> %tmp3
}
define <4 x float> @vzipQf(<4 x float>* %A, <4 x float>* %B) nounwind {
; CHECK-LABEL: vzipQf:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r1]
; CHECK-NEXT: vld1.64 {d18, d19}, [r0]
; CHECK-NEXT: vzip.32 q9, q8
; CHECK-NEXT: vadd.f32 q8, q9, q8
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: vmov r2, r3, d17
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x float>, <4 x float>* %A
%tmp2 = load <4 x float>, <4 x float>* %B
%tmp3 = shufflevector <4 x float> %tmp1, <4 x float> %tmp2, <4 x i32> <i32 0, i32 4, i32 1, i32 5>
%tmp4 = shufflevector <4 x float> %tmp1, <4 x float> %tmp2, <4 x i32> <i32 2, i32 6, i32 3, i32 7>
%tmp5 = fadd <4 x float> %tmp3, %tmp4
ret <4 x float> %tmp5
}
define <8 x float> @vzipQf_QQres(<4 x float>* %A, <4 x float>* %B) nounwind {
; CHECK-LABEL: vzipQf_QQres:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
; CHECK-NEXT: vzip.32 q9, q8
; CHECK-NEXT: vst1.32 {d18, d19}, [r0:128]!
; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <4 x float>, <4 x float>* %A
%tmp2 = load <4 x float>, <4 x float>* %B
%tmp3 = shufflevector <4 x float> %tmp1, <4 x float> %tmp2, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
ret <8 x float> %tmp3
}
; Undef shuffle indices should not prevent matching to VZIP:
define <8 x i8> @vzipi8_undef(<8 x i8>* %A, <8 x i8>* %B) nounwind {
; CHECK-LABEL: vzipi8_undef:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr d16, [r1]
; CHECK-NEXT: vldr d17, [r0]
; CHECK-NEXT: vzip.8 d17, d16
; CHECK-NEXT: vadd.i8 d16, d17, d16
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: mov pc, lr
%tmp1 = load <8 x i8>, <8 x i8>* %A
%tmp2 = load <8 x i8>, <8 x i8>* %B
%tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <8 x i32> <i32 0, i32 undef, i32 1, i32 9, i32 undef, i32 10, i32 3, i32 11>
%tmp4 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <8 x i32> <i32 4, i32 12, i32 5, i32 13, i32 6, i32 undef, i32 undef, i32 15>
%tmp5 = add <8 x i8> %tmp3, %tmp4
ret <8 x i8> %tmp5
}
define <16 x i8> @vzipi8_undef_Qres(<8 x i8>* %A, <8 x i8>* %B) nounwind {
; CHECK-LABEL: vzipi8_undef_Qres:
; CHECK: @ BB#0:
; CHECK-NEXT: vldr [[LDR1:d[0-9]+]], [r1]
; CHECK-NEXT: vldr [[LDR0:d[0-9]+]], [r0]
; CHECK-NEXT: vzip.8 [[LDR0]], [[LDR1]]
; CHECK-NEXT: vmov r0, r1, [[LDR0]]
; CHECK-NEXT: vmov r2, r3, [[LDR1]]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <8 x i8>, <8 x i8>* %A
%tmp2 = load <8 x i8>, <8 x i8>* %B
%tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <16 x i32> <i32 0, i32 undef, i32 1, i32 9, i32 undef, i32 10, i32 3, i32 11, i32 4, i32 12, i32 5, i32 13, i32 6, i32 undef, i32 undef, i32 15>
ret <16 x i8> %tmp3
}
define <16 x i8> @vzipQi8_undef(<16 x i8>* %A, <16 x i8>* %B) nounwind {
; CHECK-LABEL: vzipQi8_undef:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r1]
; CHECK-NEXT: vld1.64 {d18, d19}, [r0]
; CHECK-NEXT: vzip.8 q9, q8
; CHECK-NEXT: vadd.i8 q8, q9, q8
; CHECK-NEXT: vmov r0, r1, d16
; CHECK-NEXT: vmov r2, r3, d17
; CHECK-NEXT: mov pc, lr
%tmp1 = load <16 x i8>, <16 x i8>* %A
%tmp2 = load <16 x i8>, <16 x i8>* %B
%tmp3 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <16 x i32> <i32 0, i32 16, i32 1, i32 undef, i32 undef, i32 undef, i32 3, i32 19, i32 4, i32 20, i32 5, i32 21, i32 6, i32 22, i32 7, i32 23>
%tmp4 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <16 x i32> <i32 8, i32 24, i32 9, i32 undef, i32 10, i32 26, i32 11, i32 27, i32 12, i32 28, i32 13, i32 undef, i32 14, i32 30, i32 undef, i32 31>
%tmp5 = add <16 x i8> %tmp3, %tmp4
ret <16 x i8> %tmp5
}
define <32 x i8> @vzipQi8_undef_QQres(<16 x i8>* %A, <16 x i8>* %B) nounwind {
; CHECK-LABEL: vzipQi8_undef_QQres:
; CHECK: @ BB#0:
; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
; CHECK-NEXT: vzip.8 q9, q8
; CHECK-NEXT: vst1.8 {d18, d19}, [r0:128]!
; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
; CHECK-NEXT: mov pc, lr
%tmp1 = load <16 x i8>, <16 x i8>* %A
%tmp2 = load <16 x i8>, <16 x i8>* %B
%tmp3 = shufflevector <16 x i8> %tmp1, <16 x i8> %tmp2, <32 x i32> <i32 0, i32 16, i32 1, i32 undef, i32 undef, i32 undef, i32 3, i32 19, i32 4, i32 20, i32 5, i32 21, i32 6, i32 22, i32 7, i32 23, i32 8, i32 24, i32 9, i32 undef, i32 10, i32 26, i32 11, i32 27, i32 12, i32 28, i32 13, i32 undef, i32 14, i32 30, i32 undef, i32 31>
ret <32 x i8> %tmp3
}
define <8 x i16> @vzip_lower_shufflemask_undef(<4 x i16>* %A, <4 x i16>* %B) {
entry:
; CHECK-LABEL: vzip_lower_shufflemask_undef
; CHECK: vzip
%tmp1 = load <4 x i16>, <4 x i16>* %A
%tmp2 = load <4 x i16>, <4 x i16>* %B
%0 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 2, i32 6, i32 3, i32 7>
ret <8 x i16> %0
}
define <4 x i32> @vzip_lower_shufflemask_zeroed(<2 x i32>* %A) {
entry:
; CHECK-LABEL: vzip_lower_shufflemask_zeroed
; CHECK-NOT: vtrn
; CHECK: vzip
%tmp1 = load <2 x i32>, <2 x i32>* %A
%0 = shufflevector <2 x i32> %tmp1, <2 x i32> %tmp1, <4 x i32> <i32 0, i32 0, i32 1, i32 0>
ret <4 x i32> %0
}
define <4 x i32> @vzip_lower_shufflemask_vuzp(<2 x i32>* %A) {
entry:
; CHECK-LABEL: vzip_lower_shufflemask_vuzp
; CHECK-NOT: vuzp
; CHECK: vzip
%tmp1 = load <2 x i32>, <2 x i32>* %A
%0 = shufflevector <2 x i32> %tmp1, <2 x i32> %tmp1, <4 x i32> <i32 0, i32 2, i32 1, i32 0>
ret <4 x i32> %0
}
define void @vzip_undef_rev_shufflemask_vtrn(<2 x i32>* %A, <4 x i32>* %B) {
entry:
; CHECK-LABEL: vzip_undef_rev_shufflemask_vtrn
; CHECK-NOT: vtrn
; CHECK: vzip
%tmp1 = load <2 x i32>, <2 x i32>* %A
%0 = shufflevector <2 x i32> %tmp1, <2 x i32> undef, <4 x i32> <i32 1, i32 1, i32 0, i32 0>
store <4 x i32> %0, <4 x i32>* %B
ret void
}
define void @vzip_vext_factor(<8 x i16>* %A, <4 x i16>* %B) {
entry:
; CHECK-LABEL: vzip_vext_factor
; CHECK: vext.16 d16, d16, d17, #3
; CHECK: vzip
%tmp1 = load <8 x i16>, <8 x i16>* %A
%0 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <4 x i32> <i32 4, i32 4, i32 5, i32 3>
store <4 x i16> %0, <4 x i16>* %B
ret void
}
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