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37abc488a0
returns false in the event the computation feeding into the pointer is unreachable, which maybe ought to be true -- but this is at least consistent with undef->isDereferenceablePointer().) Fixes PR11825! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148671 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1012 B
LLVM
29 lines
1012 B
LLVM
; RUN: opt -simplifycfg < %s -disable-output
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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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target triple = "x86_64-pc-linux-gnu"
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; PR11825
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define void @test1() {
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entry:
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br label %return
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while_block: ; preds = %and_if_cont2, %and_if_cont
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%newlen = sub i32 %newlen, 1
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%newptr = getelementptr i8* %newptr, i64 1
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%test = icmp sgt i32 %newlen, 0
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br i1 %test, label %and_if1, label %and_if_cont2
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and_if1: ; preds = %while_block
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%char = load i8* %newptr
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%test2 = icmp ule i8 %char, 32
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br label %and_if_cont2
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and_if_cont2: ; preds = %and_if1, %while_block
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%a18 = phi i1 [ %test, %while_block ], [ %test2, %and_if1 ]
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br i1 %a18, label %while_block, label %return
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return: ; preds = %and_if_cont2, %and_if_cont
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ret void
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}
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