37 lines
1.1 KiB
LLVM
37 lines
1.1 KiB
LLVM
; RUN: opt -S -loop-simplifycfg < %s | FileCheck %s
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; RUN: opt -S -passes='require<domtree>,loop(simplify-cfg)' < %s | FileCheck %s
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; RUN: opt -S -loop-simplifycfg -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
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; CHECK-LABEL: foo
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; CHECK: entry:
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; CHECK-NEXT: br label %[[LOOP:[a-z]+]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: phi
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; CHECK-NOT: br label
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; CHECK: br i1
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define i32 @foo(i32* %P, i64* %Q) {
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entry:
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br label %outer
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outer: ; preds = %outer.latch2, %entry
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%y.2 = phi i32 [ 0, %entry ], [ %y.inc2, %outer.latch2 ]
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br label %inner
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inner: ; preds = %outer
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store i32 0, i32* %P
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store i32 1, i32* %P
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store i32 2, i32* %P
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%y.inc2 = add nsw i32 %y.2, 1
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%exitcond.outer = icmp eq i32 %y.inc2, 3
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store i32 %y.2, i32* %P
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br i1 %exitcond.outer, label %exit, label %outer.latch2
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outer.latch2: ; preds = %inner
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%t = sext i32 %y.inc2 to i64
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store i64 %t, i64* %Q
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br label %outer
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exit: ; preds = %inner
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ret i32 0
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}
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