55 lines
1.7 KiB
LLVM
55 lines
1.7 KiB
LLVM
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; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -keep-loops=false -S < %s | FileCheck %s
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; RUN: opt -passes='simplify-cfg<no-keep-loops>' -S < %s | FileCheck %s
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define void @test1(i32 %n) #0 {
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entry:
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%n.addr = alloca i32, align 4
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%count = alloca i32, align 4
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store i32 %n, i32* %n.addr, align 4
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%0 = bitcast i32* %count to i8*
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store i32 0, i32* %count, align 4
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br label %while.cond
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while.cond: ; preds = %if.end, %entry
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%1 = load i32, i32* %count, align 4
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%2 = load i32, i32* %n.addr, align 4
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%cmp = icmp ule i32 %1, %2
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br i1 %cmp, label %while.body, label %while.end
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while.body: ; preds = %while.cond
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%3 = load i32, i32* %count, align 4
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%rem = urem i32 %3, 2
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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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%4 = load i32, i32* %count, align 4
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%add = add i32 %4, 1
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store i32 %add, i32* %count, align 4
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br label %if.end
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; CHECK: if.then:
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; CHECK: br label %while.cond, !llvm.loop !0
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if.else: ; preds = %while.body
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%5 = load i32, i32* %count, align 4
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%add2 = add i32 %5, 2
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store i32 %add2, i32* %count, align 4
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br label %if.end
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; CHECK: if.else:
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; CHECK: br label %while.cond, !llvm.loop !0
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if.end: ; preds = %if.else, %if.then
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br label %while.cond, !llvm.loop !0
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while.end: ; preds = %while.cond
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%6 = bitcast i32* %count to i8*
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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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