forked from OSchip/llvm-project
131 lines
7.6 KiB
LLVM
131 lines
7.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; This is the loop in c++ being vectorize in this file with
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; shuffle reverse
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;#pragma clang loop vectorize_width(4, fixed)
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; for (long int i = N - 1; i >= 0; i--)
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; {
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; if (cond[i])
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; a[i] += 1;
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; }
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; The test checks if the mask is being correctly created, reverted and used
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; RUN: opt -loop-vectorize -dce -instcombine -mtriple aarch64-linux-gnu -S \
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; RUN: -prefer-predicate-over-epilogue=scalar-epilogue < %s | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-linux-gnu"
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define void @vector_reverse_mask_v4i1(double* noalias %a, double* noalias %cond, i64 %N) #0 {
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; CHECK-LABEL: @vector_reverse_mask_v4i1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP7:%.*]] = icmp sgt i64 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[CMP7]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 8
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; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], -8
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; CHECK-NEXT: [[IND_END:%.*]] = and i64 [[N]], 7
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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: [[TMP0:%.*]] = xor i64 [[INDEX]], -1
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; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], [[N]]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds double, double* [[COND:%.*]], i64 [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds double, double* [[TMP2]], i64 -3
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast double* [[TMP3]] to <4 x double>*
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x double>, <4 x double>* [[TMP4]], align 8
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; CHECK-NEXT: [[REVERSE:%.*]] = shufflevector <4 x double> [[WIDE_LOAD]], <4 x double> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds double, double* [[TMP2]], i64 -4
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds double, double* [[TMP5]], i64 -3
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; CHECK-NEXT: [[TMP7:%.*]] = bitcast double* [[TMP6]] to <4 x double>*
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; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <4 x double>, <4 x double>* [[TMP7]], align 8
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; CHECK-NEXT: [[REVERSE2:%.*]] = shufflevector <4 x double> [[WIDE_LOAD1]], <4 x double> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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; CHECK-NEXT: [[TMP8:%.*]] = fcmp une <4 x double> [[REVERSE]], zeroinitializer
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; CHECK-NEXT: [[TMP9:%.*]] = fcmp une <4 x double> [[REVERSE2]], zeroinitializer
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; CHECK-NEXT: [[TMP10:%.*]] = getelementptr double, double* [[A:%.*]], i64 [[TMP1]]
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; CHECK-NEXT: [[TMP11:%.*]] = getelementptr double, double* [[TMP10]], i64 -3
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; CHECK-NEXT: [[REVERSE3:%.*]] = shufflevector <4 x i1> [[TMP8]], <4 x i1> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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; CHECK-NEXT: [[TMP12:%.*]] = bitcast double* [[TMP11]] to <4 x double>*
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; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <4 x double> @llvm.masked.load.v4f64.p0v4f64(<4 x double>* [[TMP12]], i32 8, <4 x i1> [[REVERSE3]], <4 x double> poison)
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; CHECK-NEXT: [[TMP13:%.*]] = getelementptr double, double* [[TMP10]], i64 -4
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; CHECK-NEXT: [[TMP14:%.*]] = getelementptr double, double* [[TMP13]], i64 -3
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; CHECK-NEXT: [[REVERSE5:%.*]] = shufflevector <4 x i1> [[TMP9]], <4 x i1> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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; CHECK-NEXT: [[TMP15:%.*]] = bitcast double* [[TMP14]] to <4 x double>*
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; CHECK-NEXT: [[WIDE_MASKED_LOAD6:%.*]] = call <4 x double> @llvm.masked.load.v4f64.p0v4f64(<4 x double>* [[TMP15]], i32 8, <4 x i1> [[REVERSE5]], <4 x double> poison)
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; CHECK-NEXT: [[TMP16:%.*]] = fadd <4 x double> [[WIDE_MASKED_LOAD]], <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>
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; CHECK-NEXT: [[TMP17:%.*]] = fadd <4 x double> [[WIDE_MASKED_LOAD6]], <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>
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; CHECK-NEXT: [[TMP18:%.*]] = bitcast double* [[TMP11]] to <4 x double>*
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; CHECK-NEXT: call void @llvm.masked.store.v4f64.p0v4f64(<4 x double> [[TMP16]], <4 x double>* [[TMP18]], i32 8, <4 x i1> [[REVERSE3]])
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; CHECK-NEXT: [[TMP19:%.*]] = bitcast double* [[TMP14]] to <4 x double>*
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; CHECK-NEXT: call void @llvm.masked.store.v4f64.p0v4f64(<4 x double> [[TMP17]], <4 x double>* [[TMP19]], i32 8, <4 x i1> [[REVERSE5]])
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
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; CHECK-NEXT: [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[N]]
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[N]], [[FOR_BODY_PREHEADER]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.cond.cleanup.loopexit:
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret void
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; CHECK: for.body:
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; CHECK-NEXT: [[I_08_IN:%.*]] = phi i64 [ [[I_08:%.*]], [[FOR_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
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; CHECK-NEXT: [[I_08]] = add nsw i64 [[I_08_IN]], -1
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, double* [[COND]], i64 [[I_08]]
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; CHECK-NEXT: [[TMP21:%.*]] = load double, double* [[ARRAYIDX]], align 8
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; CHECK-NEXT: [[TOBOOL:%.*]] = fcmp une double [[TMP21]], 0.000000e+00
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; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[FOR_INC]]
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; CHECK: if.then:
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; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds double, double* [[A]], i64 [[I_08]]
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; CHECK-NEXT: [[TMP22:%.*]] = load double, double* [[ARRAYIDX1]], align 8
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; CHECK-NEXT: [[ADD:%.*]] = fadd double [[TMP22]], 1.000000e+00
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; CHECK-NEXT: store double [[ADD]], double* [[ARRAYIDX1]], align 8
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; CHECK-NEXT: br label [[FOR_INC]]
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; CHECK: for.inc:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i64 [[I_08_IN]], 1
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP_LOOPEXIT]], !llvm.loop [[LOOP3:![0-9]+]]
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;
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entry:
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%cmp7 = icmp sgt i64 %N, 0
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br i1 %cmp7, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond.cleanup, %entry
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ret void
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for.body: ; preds = %for.body, %entry
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%i.08.in = phi i64 [ %i.08, %for.inc ], [ %N, %entry ]
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%i.08 = add nsw i64 %i.08.in, -1
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%arrayidx = getelementptr inbounds double, double* %cond, i64 %i.08
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%0 = load double, double* %arrayidx, align 8
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%tobool = fcmp une double %0, 0.000000e+00
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br i1 %tobool, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%arrayidx1 = getelementptr inbounds double, double* %a, i64 %i.08
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%1 = load double, double* %arrayidx1, align 8
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%add = fadd double %1, 1.000000e+00
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store double %add, double* %arrayidx1, align 8
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%cmp = icmp sgt i64 %i.08.in, 1
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br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0
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}
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attributes #0 = {"target-cpu"="generic" "target-features"="+neon,+sve" vscale_range(2,0) }
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!0 = distinct !{!0, !1, !2, !3, !4, !5}
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!1 = !{!"llvm.loop.mustprogress"}
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!2 = !{!"llvm.loop.vectorize.width", i32 4}
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!3 = !{!"llvm.loop.vectorize.scalable.enable", i1 false}
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!4 = !{!"llvm.loop.vectorize.enable", i1 true}
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!5 = !{!"llvm.loop.interleave.count", i32 2}
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