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
43 lines
1.7 KiB
LLVM
43 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s | FileCheck %s
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define void @test_variable_stride(ptr %dst, i32 %scale) {
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; CHECK-LABEL: define void @test_variable_stride
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; CHECK-SAME: (ptr [[DST:%.*]], i32 [[SCALE:%.*]]) {
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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 i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = mul i32 [[INDEX]], [[SCALE]]
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; CHECK-NEXT: [[TMP2:%.*]] = mul i32 [[TMP0]], [[SCALE]]
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i16, ptr [[DST]], i32 [[TMP1]]
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i16, ptr [[DST]], i32 [[TMP2]]
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; CHECK-NEXT: store i32 [[INDEX]], ptr [[TMP3]], align 2
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; CHECK-NEXT: store i32 [[TMP0]], ptr [[TMP4]], align 2
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1000
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; CHECK-NEXT: br i1 [[TMP5]], 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 void
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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 [ 0, %entry ], [ %iv.next, %loop ]
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%idx = mul i32 %iv, %scale
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%gep = getelementptr i16, ptr %dst, i32 %idx
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store i32 %iv, ptr %gep, align 2
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%iv.next = add i32 %iv, 1
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%ec = icmp eq i32 %iv.next, 1000
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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