5a476987f7
The previous rule: (insert_vector _, (extract_vector X, 0), 0) -> X is not quite correct. The correct fold should be: (insert_vector Y, (extract_vector X, 0), 0) -> X where: Y is X, or Y is undef This commit updates the pattern. Reviewed By: peterwaller-arm, paulwalker-arm Differential Revision: https://reviews.llvm.org/D102699
38 lines
2.4 KiB
LLVM
38 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instsimplify -S | FileCheck %s
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define <vscale x 16 x i8> @redundant_extract_insert_chain(<vscale x 16 x i8> %x) {
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; CHECK-LABEL: @redundant_extract_insert_chain(
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; CHECK-NEXT: ret <vscale x 16 x i8> [[X:%.*]]
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;
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%extracted = call <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv16i8(<vscale x 16 x i8> %x, i64 0)
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%inserted = call <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8> undef, <32 x i8> %extracted, i64 0)
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ret <vscale x 16 x i8> %inserted
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}
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define <vscale x 16 x i8> @non_redundant_extract_insert_chain_0(<vscale x 32 x i8> %x) {
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; CHECK-LABEL: @non_redundant_extract_insert_chain_0(
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; CHECK-NEXT: [[EXTRACTED:%.*]] = call <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv32i8(<vscale x 32 x i8> [[X:%.*]], i64 0)
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; CHECK-NEXT: [[INSERTED:%.*]] = call <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8> undef, <32 x i8> [[EXTRACTED]], i64 0)
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; CHECK-NEXT: ret <vscale x 16 x i8> [[INSERTED]]
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;
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%extracted = call <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv32i8(<vscale x 32 x i8> %x, i64 0)
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%inserted = call <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8> undef, <32 x i8> %extracted, i64 0)
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ret <vscale x 16 x i8> %inserted
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}
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define <vscale x 16 x i8> @non_redundant_extract_insert_chain_1(<vscale x 16 x i8> %x, <vscale x 16 x i8> %y) {
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; CHECK-LABEL: @non_redundant_extract_insert_chain_1(
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; CHECK-NEXT: [[EXTRACTED:%.*]] = call <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv16i8(<vscale x 16 x i8> [[X:%.*]], i64 0)
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; CHECK-NEXT: [[INSERTED:%.*]] = call <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8> [[Y:%.*]], <32 x i8> [[EXTRACTED]], i64 0)
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; CHECK-NEXT: ret <vscale x 16 x i8> [[INSERTED]]
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;
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%extracted = call <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv16i8(<vscale x 16 x i8> %x, i64 0)
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%inserted = call <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8> %y, <32 x i8> %extracted, i64 0)
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ret <vscale x 16 x i8> %inserted
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}
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declare <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv16i8(<vscale x 16 x i8>, i64)
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declare <32 x i8> @llvm.experimental.vector.extract.v32i8.nxv32i8(<vscale x 32 x i8>, i64)
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declare <vscale x 16 x i8> @llvm.experimental.vector.insert.nxv16i8.v32i8(<vscale x 16 x i8>, <32 x i8>, i64)
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