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[CGP][x86] add test for funnel-shift with cross-block splat shift-amount; NFC

This commit is contained in:
Sanjay Patel 2020-05-11 10:48:47 -04:00
parent 63a4fdda8c
commit 0cea15cc4a
1 changed files with 41 additions and 0 deletions
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41
llvm/test/Transforms/CodeGenPrepare/X86/x86-shuffle-sink.ll
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@ -178,3 +178,44 @@ if_false:
%res = lshr <2 x i64> %lhs, %mask
ret <2 x i64> %res
}
define void @funnel_splatvar(i32* nocapture %arr, i32 %rot) {
; CHECK-LABEL: @funnel_splatvar(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT15:%.*]] = insertelement <8 x i32> undef, i32 [[ROT:%.*]], i32 0
; CHECK-NEXT: [[BROADCAST_SPLAT16:%.*]] = shufflevector <8 x i32> [[BROADCAST_SPLATINSERT15]], <8 x i32> undef, <8 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds i32, i32* [[ARR:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[T1:%.*]] = bitcast i32* [[T0]] to <8 x i32>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i32>, <8 x i32>* [[T1]], align 4
; CHECK-NEXT: [[T2:%.*]] = call <8 x i32> @llvm.fshl.v8i32(<8 x i32> [[WIDE_LOAD]], <8 x i32> [[WIDE_LOAD]], <8 x i32> [[BROADCAST_SPLAT16]])
; CHECK-NEXT: store <8 x i32> [[T2]], <8 x i32>* [[T1]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
; CHECK-NEXT: [[T3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 65536
; CHECK-NEXT: br i1 [[T3]], label [[FOR_COND_CLEANUP:%.*]], label [[VECTOR_BODY]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
;
entry:
%broadcast.splatinsert15 = insertelement <8 x i32> undef, i32 %rot, i32 0
%broadcast.splat16 = shufflevector <8 x i32> %broadcast.splatinsert15, <8 x i32> undef, <8 x i32> zeroinitializer
br label %vector.body
vector.body:
%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
%t0 = getelementptr inbounds i32, i32* %arr, i64 %index
%t1 = bitcast i32* %t0 to <8 x i32>*
%wide.load = load <8 x i32>, <8 x i32>* %t1, align 4
%t2 = call <8 x i32> @llvm.fshl.v8i32(<8 x i32> %wide.load, <8 x i32> %wide.load, <8 x i32> %broadcast.splat16)
store <8 x i32> %t2, <8 x i32>* %t1, align 4
%index.next = add i64 %index, 8
%t3 = icmp eq i64 %index.next, 65536
br i1 %t3, label %for.cond.cleanup, label %vector.body
for.cond.cleanup:
ret void
}
declare <8 x i32> @llvm.fshl.v8i32(<8 x i32>, <8 x i32>, <8 x i32>)