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c4f3d51e12
values from all of the loop's exiting blocks are equal. Patch by Andrew Clinton. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126253 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
525 B
LLVM
27 lines
525 B
LLVM
; RUN: opt < %s -loop-deletion -S | FileCheck %s
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; Checks whether dead loops with multiple exits can be eliminated
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; CHECK: entry:
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; CHECK-NEXT: br label %return
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; CHECK: return:
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; CHECK-NEXT: ret void
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define void @foo(i64 %n, i64 %m) nounwind {
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entry:
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br label %bb
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bb:
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%x.0 = phi i64 [ 0, %entry ], [ %t0, %bb2 ]
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%t0 = add i64 %x.0, 1
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%t1 = icmp slt i64 %x.0, %n
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br i1 %t1, label %bb2, label %return
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bb2:
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%t2 = icmp slt i64 %x.0, %m
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br i1 %t1, label %bb, label %return
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return:
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ret void
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}
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