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R600/SI: Custom lower CONCAT_VECTORS

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This will lower them using register copies rather than loads and stores
to the stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215270 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2014-08-09 01:06:56 +00:00
parent f1ba587963
commit 4e8a136db8
2 changed files with 4 additions and 3 deletions
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4
lib/Target/R600/SIISelLowering.cpp
View File

@ -196,10 +196,12 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
case ISD::BITCAST:
case ISD::EXTRACT_VECTOR_ELT:
case ISD::INSERT_VECTOR_ELT:
case ISD::CONCAT_VECTORS:
case ISD::INSERT_SUBVECTOR:
case ISD::EXTRACT_SUBVECTOR:
break;
case ISD::CONCAT_VECTORS:
setOperationAction(Op, VT, Custom);
break;
default:
setOperationAction(Op, VT, Expand);
break;

3
test/CodeGen/R600/concat_vectors.ll
View File

@ -77,8 +77,7 @@ define void @test_concat_v4f32(<8 x float> addrspace(1)* %out, <4 x float> %a, <
}
; FUNC-LABEL: @test_concat_v8f32
; FIXME: This is currently being expanded with loads / stores to the stack.
; FIXME-SI-NOT: S_MOV_B32 s{{[0-9]}}, 0x80f000
; SI-NOT: S_MOV_B32 s{{[0-9]}}, 0x80f000
; SI-NOT: MOVREL
define void @test_concat_v8f32(<16 x float> addrspace(1)* %out, <8 x float> %a, <8 x float> %b) nounwind {
%concat = shufflevector <8 x float> %a, <8 x float> %b, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>