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47679d5af7
(h/t to Chandler for pointing this out) The test in question was not at all testing what it was supposed to test. We do not //care// about placing `!make.implicit` in inner constant branch (since it will be folded away anyway). We care about placing `!make.implicit` in the outer branch that switches between either version of the loop. Having said that, it is _correct_ to leave behind the `!make.implicit` in the inner branch, but there is no need to do so. llvm-svn: 299912
24 lines
516 B
LLVM
24 lines
516 B
LLVM
; RUN: opt < %s -loop-unswitch -S < %s 2>&1 | FileCheck %s
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; This test checks if unswitched condition preserve make.implicit metadata.
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define i32 @test(i1 %cond) {
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; CHECK-LABEL: @test(
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; CHECK: br i1 %cond, label %..split_crit_edge, label %.loop_exit.split_crit_edge, !make.implicit !0
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br label %loop_begin
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loop_begin:
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br i1 %cond, label %continue, label %loop_exit, !make.implicit !0
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continue:
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call void @some_func()
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br label %loop_begin
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loop_exit:
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ret i32 0
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}
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declare void @some_func()
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!0 = !{}
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