8907b6d393
Build on top of https://github.com/llvm/llvm-project/pull/154510 to completely remove the blocks of dead scalar loops. Depends on https://github.com/llvm/llvm-project/pull/154510. PR: https://github.com/llvm/llvm-project/pull/155497
50 lines
2.1 KiB
LLVM
50 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -p loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s | FileCheck %s
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define float @for_load_interleave_only(ptr %src) {
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; CHECK-LABEL: define float @for_load_interleave_only(
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; CHECK-SAME: ptr [[SRC:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br label %[[VECTOR_PH:.*]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
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; CHECK: [[VECTOR_BODY]]:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], 16
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; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[OFFSET_IDX]], 16
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; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[OFFSET_IDX]]
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; CHECK-NEXT: [[NEXT_GEP2:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[TMP1]]
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; CHECK-NEXT: [[TMP2:%.*]] = load float, ptr [[NEXT_GEP]], align 4
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; CHECK-NEXT: store float 0.000000e+00, ptr [[NEXT_GEP]], align 4
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; CHECK-NEXT: store float 0.000000e+00, ptr [[NEXT_GEP2]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
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; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
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; CHECK-NEXT: br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: br label %[[EXIT:.*]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret float [[TMP2]]
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
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%ptr.iv = phi ptr [ %src, %entry ], [ %ptr.iv.next, %loop ]
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%for = phi float [ 0.000000e+00, %entry ], [ %l, %loop ]
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%iv.next = add i32 %iv, 1
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%ptr.iv.next = getelementptr i8, ptr %ptr.iv, i64 16
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%l = load float, ptr %ptr.iv, align 4
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store float 0.000000e+00, ptr %ptr.iv, align 4
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%ec = icmp eq i32 %iv, 1000
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br i1 %ec, label %exit, label %loop
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exit:
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ret float %for
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}
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;.
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; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
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; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
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; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
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;.
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