38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; THis testcase caused an assertion failure because a PHI node did not have
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; entries for it's postdominator. But I think this can only happen when the
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; PHI node is dead, so we just avoid patching up dead PHI nodes.
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; RUN: opt < %s -adce -S | FileCheck %s
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; RUN: opt < %s -adce -adce-remove-loops -S | FileCheck %s
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target datalayout = "e-p:32:32"
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define void @dead_test8() {
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entry:
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br label %loopentry
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loopentry: ; preds = %endif, %entry
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%k.1 = phi i32 [ %k.0, %endif ], [ 0, %entry ] ; <i32> [#uses=1]
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br i1 false, label %no_exit, label %return
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no_exit: ; preds = %loopentry
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; CHECK: br label %then
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br i1 false, label %then, label %else
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then: ; preds = %no_exit
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br label %endif
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else: ; preds = %no_exit
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%dec = add i32 %k.1, -1 ; <i32> [#uses=1]
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br label %endif
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endif: ; preds = %else, %then
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%k.0 = phi i32 [ %dec, %else ], [ 0, %then ] ; <i32> [#uses=1]
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store i32 2, i32* null
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br label %loopentry
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return: ; preds = %loopentry
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ret void
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}
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