forked from OSchip/llvm-project
57 lines
2.4 KiB
LLVM
57 lines
2.4 KiB
LLVM
; RUN: opt -simplifycfg -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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