71 lines
2.2 KiB
LLVM
71 lines
2.2 KiB
LLVM
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; RUN: opt -loop-simplify -S < %s | FileCheck %s
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; CHECK-LABEL: @test1
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define void @test1(i32 %n) {
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entry:
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br label %while.cond
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while.cond: ; preds = %if.then, %if.else, %entry
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%count.0 = phi i32 [ 0, %entry ], [ %add, %if.then ], [ %add2, %if.else ]
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%cmp = icmp ugt i32 %count.0, %n
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br i1 %cmp, label %while.end, label %while.body
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while.body: ; preds = %while.cond
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%rem = and i32 %count.0, 1
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%cmp1 = icmp eq i32 %rem, 0
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %while.body
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%add = add i32 %count.0, 1
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br label %while.cond, !llvm.loop !0
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if.else: ; preds = %while.body
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%add2 = add i32 %count.0, 2
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br label %while.cond, !llvm.loop !0
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while.end: ; preds = %while.cond
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ret void
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}
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; CHECK: if.then
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; CHECK-NOT: br {{.*}}!llvm.loop{{.*}}
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; CHECK: while.cond.backedge:
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; CHECK: br label %while.cond, !llvm.loop !0
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; CHECK: if.else
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; CHECK-NOT: br {{.*}}!llvm.loop{{.*}}
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; CHECK-LABEL: @test2
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; CHECK: for.body:
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; CHECK: br i1 %{{.*}}, label %for.body, label %cleanup.loopexit, !llvm.loop !0
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define void @test2(i32 %k) {
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entry:
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%cmp9 = icmp sgt i32 %k, 0
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br i1 %cmp9, label %for.body.preheader, label %cleanup
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.cond: ; preds = %for.body
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%cmp = icmp slt i32 %inc, %k
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br i1 %cmp, label %for.body, label %cleanup.loopexit, !llvm.loop !0
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for.body: ; preds = %for.body.preheader, %for.cond
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%i.010 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ]
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%cmp3 = icmp sgt i32 %i.010, 3
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%inc = add nsw i32 %i.010, 1
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br i1 %cmp3, label %cleanup.loopexit, label %for.cond
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cleanup.loopexit: ; preds = %for.body, %for.cond
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br label %cleanup
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cleanup: ; preds = %cleanup.loopexit, %entry
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ret void
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}
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!0 = distinct !{!0, !1}
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!1 = !{!"llvm.loop.distribute.enable", i1 true}
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; CHECK: !0 = distinct !{!0, !1}
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; CHECK: !1 = !{!"llvm.loop.distribute.enable", i1 true}
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