forked from OSchip/llvm-project
99 lines
4.1 KiB
LLVM
99 lines
4.1 KiB
LLVM
; RUN: opt -S -loop-versioning-licm -licm-versioning-invariant-threshold=0 %s | FileCheck %s
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; RUN: opt -S -passes='loop-versioning-licm' -licm-versioning-invariant-threshold=0 %s | FileCheck %s
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; Make sure the convergent attribute is respected, and no condition is
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; introduced
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; CHECK-LABEL: @test_convergent(
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; CHECK: call void @llvm.convergent()
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; CHECK-NOT: call void @llvm.convergent()
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define i32 @test_convergent(i32* nocapture %var1, i32* nocapture readnone %var2, i32* nocapture %var3, i32 %itr) #1 {
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entry:
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%cmp14 = icmp eq i32 %itr, 0
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br i1 %cmp14, label %for.end13, label %for.cond1.preheader
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for.cond1.preheader: ; preds = %entry, %for.inc11
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%j.016 = phi i32 [ %j.1.lcssa, %for.inc11 ], [ 0, %entry ]
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%i.015 = phi i32 [ %inc12, %for.inc11 ], [ 0, %entry ]
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%cmp212 = icmp ult i32 %j.016, %itr
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br i1 %cmp212, label %for.body3.lr.ph, label %for.inc11
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for.body3.lr.ph: ; preds = %for.cond1.preheader
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%add = add i32 %i.015, %itr
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%idxprom6 = zext i32 %i.015 to i64
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%arrayidx7 = getelementptr inbounds i32, i32* %var3, i64 %idxprom6
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br label %for.body3
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for.body3: ; preds = %for.body3, %for.body3.lr.ph
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%j.113 = phi i32 [ %j.016, %for.body3.lr.ph ], [ %inc, %for.body3 ]
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%idxprom = zext i32 %j.113 to i64
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%arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
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store i32 %add, i32* %arrayidx, align 4
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%load.arrayidx7 = load i32, i32* %arrayidx7, align 4
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call void @llvm.convergent()
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%add8 = add nsw i32 %load.arrayidx7, %add
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store i32 %add8, i32* %arrayidx7, align 4
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%inc = add nuw i32 %j.113, 1
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%cmp2 = icmp ult i32 %inc, %itr
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br i1 %cmp2, label %for.body3, label %for.inc11
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for.inc11: ; preds = %for.body3, %for.cond1.preheader
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%j.1.lcssa = phi i32 [ %j.016, %for.cond1.preheader ], [ %itr, %for.body3 ]
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%inc12 = add nuw i32 %i.015, 1
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%cmp = icmp ult i32 %inc12, %itr
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br i1 %cmp, label %for.cond1.preheader, label %for.end13
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for.end13: ; preds = %for.inc11, %entry
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ret i32 0
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}
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; CHECK-LABEL: @test_noduplicate(
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; CHECK: call void @llvm.noduplicate()
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; CHECK-NOT: call void @llvm.noduplicate()
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define i32 @test_noduplicate(i32* nocapture %var1, i32* nocapture readnone %var2, i32* nocapture %var3, i32 %itr) #2 {
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entry:
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%cmp14 = icmp eq i32 %itr, 0
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br i1 %cmp14, label %for.end13, label %for.cond1.preheader
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for.cond1.preheader: ; preds = %entry, %for.inc11
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%j.016 = phi i32 [ %j.1.lcssa, %for.inc11 ], [ 0, %entry ]
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%i.015 = phi i32 [ %inc12, %for.inc11 ], [ 0, %entry ]
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%cmp212 = icmp ult i32 %j.016, %itr
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br i1 %cmp212, label %for.body3.lr.ph, label %for.inc11
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for.body3.lr.ph: ; preds = %for.cond1.preheader
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%add = add i32 %i.015, %itr
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%idxprom6 = zext i32 %i.015 to i64
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%arrayidx7 = getelementptr inbounds i32, i32* %var3, i64 %idxprom6
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br label %for.body3
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for.body3: ; preds = %for.body3, %for.body3.lr.ph
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%j.113 = phi i32 [ %j.016, %for.body3.lr.ph ], [ %inc, %for.body3 ]
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%idxprom = zext i32 %j.113 to i64
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%arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
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store i32 %add, i32* %arrayidx, align 4
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%load.arrayidx7 = load i32, i32* %arrayidx7, align 4
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call void @llvm.noduplicate()
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%add8 = add nsw i32 %load.arrayidx7, %add
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store i32 %add8, i32* %arrayidx7, align 4
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%inc = add nuw i32 %j.113, 1
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%cmp2 = icmp ult i32 %inc, %itr
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br i1 %cmp2, label %for.body3, label %for.inc11
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for.inc11: ; preds = %for.body3, %for.cond1.preheader
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%j.1.lcssa = phi i32 [ %j.016, %for.cond1.preheader ], [ %itr, %for.body3 ]
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%inc12 = add nuw i32 %i.015, 1
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%cmp = icmp ult i32 %inc12, %itr
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br i1 %cmp, label %for.cond1.preheader, label %for.end13
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for.end13: ; preds = %for.inc11, %entry
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ret i32 0
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}
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declare void @llvm.convergent() #1
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declare void @llvm.noduplicate() #2
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attributes #0 = { norecurse nounwind }
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attributes #1 = { norecurse nounwind readnone convergent }
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attributes #2 = { norecurse nounwind readnone noduplicate }
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