aa2009fe78
First step after e113317958,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.
In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.
57 lines
2.4 KiB
LLVM
57 lines
2.4 KiB
LLVM
; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: norecurse nounwind uwtable
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define void @Test(i32* nocapture %res, i32* nocapture readnone %c, i32* nocapture readonly %d, i32* nocapture readonly %p) #0 {
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entry:
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br label %for.body
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; CHECK-LABEL: @Test
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; CHECK: load i32, i32* {{.*}}, align 4, !llvm.access.group !0
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; CHECK: load i32, i32* {{.*}}, align 4, !llvm.access.group !0
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; CHECK: store i32 {{.*}}, align 4, !llvm.access.group !0
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; CHECK-NOT: load
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; CHECK-NOT: store
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for.body: ; preds = %cond.end, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %cond.end ]
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%arrayidx = getelementptr inbounds i32, i32* %p, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4, !llvm.access.group !0
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%cmp1 = icmp eq i32 %0, 0
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br i1 %cmp1, label %cond.true, label %cond.false
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cond.false: ; preds = %for.body
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%arrayidx3 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
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%v = load i32, i32* %arrayidx3, align 4, !llvm.access.group !0
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%arrayidx7 = getelementptr inbounds i32, i32* %d, i64 %indvars.iv
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%1 = load i32, i32* %arrayidx7, align 4, !llvm.access.group !0
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%add = add nsw i32 %1, %v
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br label %cond.end
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cond.true: ; preds = %for.body
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%arrayidx4 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
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%w = load i32, i32* %arrayidx4, align 4, !llvm.access.group !0
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%arrayidx8 = getelementptr inbounds i32, i32* %d, i64 %indvars.iv
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%2 = load i32, i32* %arrayidx8, align 4, !llvm.access.group !0
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%add2 = add nsw i32 %2, %w
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br label %cond.end
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cond.end: ; preds = %for.body, %cond.false
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%cond = phi i32 [ %add, %cond.false ], [ %add2, %cond.true ]
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%arrayidx9 = getelementptr inbounds i32, i32* %res, i64 %indvars.iv
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store i32 %cond, i32* %arrayidx9, align 4, !llvm.access.group !0
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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, 16
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0
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for.end: ; preds = %cond.end
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ret void
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}
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attributes #0 = { norecurse nounwind uwtable }
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!0 = distinct !{!0, !1, !{!"llvm.loop.parallel_accesses", !10}}
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!1 = !{!"llvm.loop.vectorize.enable", i1 true}
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!10 = distinct !{}
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