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d8bd7ce2ca
CFLAA didn't know how to properly handle ConstantExprs; it would silently ignore them. This was a problem if the ConstantExpr is, say, a GEP of a global, because CFLAA wouldn't realize that there's a global there. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231743 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.5 KiB
LLVM
34 lines
1.5 KiB
LLVM
; This testcase ensures that CFLAA doesn't try to access out of bounds indices
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; when given functions with large amounts of arguments (specifically, more
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; arguments than the StratifiedAttrs bitset can handle)
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;
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; Because the result on failure is effectively crashing the compiler, output
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; checking is minimal.
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; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
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; CHECK: Function: test
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define void @test(i1 %cond,
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i32* %arg1, i32* %arg2, i32* %arg3, i32* %arg4, i32* %arg5,
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i32* %arg6, i32* %arg7, i32* %arg8, i32* %arg9, i32* %arg10,
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i32* %arg11, i32* %arg12, i32* %arg13, i32* %arg14, i32* %arg15,
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i32* %arg16, i32* %arg17, i32* %arg18, i32* %arg19, i32* %arg20,
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i32* %arg21, i32* %arg22, i32* %arg23, i32* %arg24, i32* %arg25,
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i32* %arg26, i32* %arg27, i32* %arg28, i32* %arg29, i32* %arg30,
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i32* %arg31, i32* %arg32, i32* %arg33, i32* %arg34, i32* %arg35) {
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; CHECK: 946 Total Alias Queries Performed
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; CHECK: 43 no alias responses (4.5%)
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%a = alloca i32, align 4
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%b = select i1 %cond, i32* %arg35, i32* %arg34
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%c = select i1 %cond, i32* %arg34, i32* %arg33
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%d = select i1 %cond, i32* %arg33, i32* %arg32
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%e = select i1 %cond, i32* %arg32, i32* %arg31
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%f = select i1 %cond, i32* %arg31, i32* %arg30
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%g = select i1 %cond, i32* %arg30, i32* %arg29
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%h = select i1 %cond, i32* %arg29, i32* %arg28
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%i = select i1 %cond, i32* %arg28, i32* %arg27
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ret void
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}
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