4f93d5cc1d
Fixes a bug preventing moving the loop's metadata to an outer loop's header, which happens if the loop's exit is also the header of an outer loop. Adjusts test for above. Fixes #55416. Differential Revision: https://reviews.llvm.org/D125574
35 lines
725 B
LLVM
35 lines
725 B
LLVM
; Tests loop-simplify does not move the loop metadata, because
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; the loopexit block is not the latch of the loop _bb6.
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; RUN: opt < %s -passes=loop-simplify -S | FileCheck %s
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; CHECK-LABEL: loop.header.loopexit:
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; CHECK: br label %loop.header, !llvm.loop !0
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; CHECK-LABEL: loop.latch:
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; CHECK: br i1 %p, label %loop.latch, label %loop.header.loopexit, !llvm.loop !0
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define void @func(i1 %p) {
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entry:
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br label %loop.header
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loop.header:
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br i1 %p, label %bb1, label %exit
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bb1:
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br i1 %p, label %bb2, label %bb3
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bb2:
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br label %bb3
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bb3:
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br label %loop.latch
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loop.latch:
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br i1 %p, label %loop.latch, label %loop.header, !llvm.loop !0
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exit:
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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.mustprogress"}
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