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
51 lines
2.3 KiB
LLVM
51 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; PR34438
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; Loop has a short trip count of 8 iterations. It should be vectorized because no runtime checks or tail loop are necessary.
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; Two cases tested AVX (MaxVF=8 = TripCount) and AVX512 (MaxVF=16 > TripCount)
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; RUN: opt < %s -passes=loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx -S | FileCheck %s
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; RUN: opt < %s -passes=loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=skylake-avx512 -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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define void @small_tc(ptr noalias nocapture %A, ptr noalias nocapture readonly %B) {
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; CHECK-LABEL: @small_tc(
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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: [[WIDE_LOAD:%.*]] = load <8 x float>, ptr [[B:%.*]], align 4, !llvm.access.group [[ACC_GRP0:![0-9]+]]
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; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x float>, ptr [[A:%.*]], align 4, !llvm.access.group [[ACC_GRP0]]
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; CHECK-NEXT: [[TMP4:%.*]] = fadd fast <8 x float> [[WIDE_LOAD]], [[WIDE_LOAD1]]
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; CHECK-NEXT: store <8 x float> [[TMP4]], ptr [[A]], align 4, !llvm.access.group [[ACC_GRP0]]
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; CHECK-NEXT: br label [[MIDDLE_BLOCK:%.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, ptr %B, i64 %indvars.iv
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%0 = load float, ptr %arrayidx, align 4, !llvm.access.group !5
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%arrayidx2 = getelementptr inbounds float, ptr %A, i64 %indvars.iv
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%1 = load float, ptr %arrayidx2, align 4, !llvm.access.group !5
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%add = fadd fast float %0, %1
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store float %add, ptr %arrayidx2, align 4, !llvm.access.group !5
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 8
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !4
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for.end:
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ret void
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}
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!3 = !{!3, !{!"llvm.loop.parallel_accesses", !5}}
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!4 = !{!4}
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!5 = distinct !{}
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