99741ac285
Introduce explicit ExtractFromEnd recipes to extract the final values for live-outs instead of implicitly extracting in VPLiveOut::fixPhi. This is a follow-up to the recent changes of modeling extracts for recurrences and consolidates live-out extract creation for fixed-order recurrences at a single place: addLiveOutsForFirstOrderRecurrences. It is also in preparation of replacing VPLiveOut with VPIRInstructions wrapping the original scalar phis. PR: https://github.com/llvm/llvm-project/pull/100658
25 lines
906 B
LLVM
25 lines
906 B
LLVM
; RUN: opt < %s -passes=loop-vectorize -S | FileCheck %s
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; There could be more than one LCSSA PHIs in loop exit block.
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; CHECK-LABEL: bb1.bb3_crit_edge:
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; CHECK: %_tmp133.lcssa1 = phi i16 [ %_tmp133, %bb2 ], [ %vector.recur.extract.for.phi1, %middle.block ]
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; CHECK: %_tmp133.lcssa = phi i16 [ %_tmp133, %bb2 ], [ %vector.recur.extract.for.phi, %middle.block ]
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define void @f1() {
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bb2.lr.ph:
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br label %bb2
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bb2: ; preds = %bb2, %bb2.lr.ph
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%_tmp132 = phi i16 [ 0, %bb2.lr.ph ], [ %_tmp10, %bb2 ]
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%_tmp133 = phi i16 [ undef, %bb2.lr.ph ], [ %_tmp10, %bb2 ]
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%_tmp10 = sub nsw i16 %_tmp132, 1
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%_tmp15 = icmp ne i16 %_tmp10, 0
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br i1 %_tmp15, label %bb2, label %bb1.bb3_crit_edge
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bb1.bb3_crit_edge: ; preds = %bb2
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%_tmp133.lcssa1 = phi i16 [ %_tmp133, %bb2 ]
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%_tmp133.lcssa = phi i16 [ %_tmp133, %bb2 ]
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ret void
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}
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