forked from OSchip/llvm-project
140 lines
4.3 KiB
LLVM
140 lines
4.3 KiB
LLVM
; This test verifies that the loop vectorizer will NOT produce a tail
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; loop with the optimize for size or the minimize size attributes.
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; REQUIRES: asserts
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; RUN: opt < %s -loop-vectorize -S | FileCheck %s
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; RUN: opt < %s -loop-vectorize -pgso -S | FileCheck %s -check-prefix=PGSO
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; RUN: opt < %s -loop-vectorize -pgso=false -S | FileCheck %s -check-prefix=NPGSO
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target datalayout = "E-m:e-p:32:32-i64:32-f64:32:64-a:0:32-n32-S128"
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@tab = common global [32 x i8] zeroinitializer, align 1
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define i32 @foo_optsize() #0 {
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; CHECK-LABEL: @foo_optsize(
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; CHECK-NOT: <2 x i8>
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; CHECK-NOT: <4 x i8>
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
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%0 = load i8, i8* %arrayidx, align 1
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%cmp1 = icmp eq i8 %0, 0
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%. = select i1 %cmp1, i8 2, i8 1
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store i8 %., i8* %arrayidx, align 1
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%inc = add nsw i32 %i.08, 1
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%exitcond = icmp eq i32 %i.08, 202
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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}
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attributes #0 = { optsize }
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define i32 @foo_minsize() #1 {
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; CHECK-LABEL: @foo_minsize(
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; CHECK-NOT: <2 x i8>
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; CHECK-NOT: <4 x i8>
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; CHECK-LABEL: @foo_pgso(
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
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%0 = load i8, i8* %arrayidx, align 1
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%cmp1 = icmp eq i8 %0, 0
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%. = select i1 %cmp1, i8 2, i8 1
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store i8 %., i8* %arrayidx, align 1
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%inc = add nsw i32 %i.08, 1
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%exitcond = icmp eq i32 %i.08, 202
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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}
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attributes #1 = { minsize }
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define i32 @foo_pgso() !prof !14 {
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; PGSO-LABEL: @foo_pgso(
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; PGSO-NOT: <{{[0-9]+}} x i8>
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; NPGSO-LABEL: @foo_pgso(
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; NPGSO: <{{[0-9]+}} x i8>
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
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%0 = load i8, i8* %arrayidx, align 1
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%cmp1 = icmp eq i8 %0, 0
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%. = select i1 %cmp1, i8 2, i8 1
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store i8 %., i8* %arrayidx, align 1
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%inc = add nsw i32 %i.08, 1
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%exitcond = icmp eq i32 %i.08, 202
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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}
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; PR43371: don't run into an assert due to emitting SCEV runtime checks
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; with OptForSize.
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;
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@cm_array = external global [2592 x i16], align 1
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define void @pr43371() optsize {
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;
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; CHECK-LABEL: @pr43371
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; CHECK-NOT: vector.scevcheck
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;
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; We do not want to generate SCEV predicates when optimising for size, because
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; that will lead to extra code generation such as the SCEV overflow runtime
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; checks. Not generating SCEV predicates can still result in vectorisation as
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; the non-consecutive loads/stores can be scalarized:
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;
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; CHECK: vector.body:
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; CHECK: store i16 0, i16* %{{.*}}, align 1
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; CHECK: store i16 0, i16* %{{.*}}, align 1
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; CHECK: br i1 {{.*}}, label %vector.body
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;
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entry:
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br label %for.body29
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for.cond.cleanup28:
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unreachable
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for.body29:
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%i24.0170 = phi i16 [ 0, %entry], [ %inc37, %for.body29]
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%add33 = add i16 undef, %i24.0170
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%idxprom34 = zext i16 %add33 to i32
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%arrayidx35 = getelementptr [2592 x i16], [2592 x i16] * @cm_array, i32 0, i32 %idxprom34
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store i16 0, i16 * %arrayidx35, align 1
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%inc37 = add i16 %i24.0170, 1
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%cmp26 = icmp ult i16 %inc37, 756
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br i1 %cmp26, label %for.body29, label %for.cond.cleanup28
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"ProfileSummary", !1}
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!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
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!2 = !{!"ProfileFormat", !"InstrProf"}
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!3 = !{!"TotalCount", i64 10000}
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!4 = !{!"MaxCount", i64 10}
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!5 = !{!"MaxInternalCount", i64 1}
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!6 = !{!"MaxFunctionCount", i64 1000}
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!7 = !{!"NumCounts", i64 3}
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!8 = !{!"NumFunctions", i64 3}
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!9 = !{!"DetailedSummary", !10}
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!10 = !{!11, !12, !13}
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!11 = !{i32 10000, i64 100, i32 1}
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!12 = !{i32 999000, i64 100, i32 1}
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!13 = !{i32 999999, i64 1, i32 2}
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!14 = !{!"function_entry_count", i64 0}
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