1469d82e1c
As defined in LangRef, branching on `undef` is undefined behavior. This PR aims to remove undefined behavior from tests. As UB tests break Alive2 and may be the root cause of breaking future optimizations. Here's an Alive2 proof for one of the examples: https://alive2.llvm.org/ce/z/TncxhP
25 lines
897 B
LLVM
25 lines
897 B
LLVM
; RUN: opt -aa-pipeline=basic-aa -passes=licm -S < %s
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; PR9931
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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define void @func_20(i1 %arg) nounwind {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond2, %entry
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br i1 %arg, label %for.cond2, label %for.end22
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for.cond2: ; preds = %for.body5, %for.cond
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br i1 false, label %for.body5, label %for.cond
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for.body5: ; preds = %for.cond2
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%tmp7 = load i64, ptr undef, align 8
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%arrayidx9 = getelementptr inbounds [2 x i64], ptr undef, i32 0, i64 undef
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%tmp10 = load i64, ptr %arrayidx9, align 8
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br label %for.cond2
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for.end22: ; preds = %for.cond
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ret void
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}
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