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llvm-mirror/test/Transforms/Reassociate/2011-01-26-UseAfterFree.ll
Duncan Sands e1912ca7e0 Fix PR9039, a use-after-free in reassociate. The issue was that the
operand being factorized (and erased) could occur several times in Ops,
resulting in freed memory being used when the next occurrence in Ops was
analyzed.

llvm-svn: 124287
2011-01-26 10:08:38 +00:00

36 lines
1.0 KiB
LLVM

; RUN: opt < %s -reassociate
; PR9039
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
target triple = "i386-gnu-linux"
%ada__tags__T15s = type void ()
define void @exp_averages_intraday__deviation() {
entry:
%0 = load i32* undef, align 4
%1 = shl i32 %0, 2
%2 = add nsw i32 undef, %1
%3 = add nsw i32 %2, undef
%4 = mul nsw i32 %0, 12
%5 = add nsw i32 %3, %4
%6 = add nsw i32 %5, %4
%7 = add nsw i32 %6, undef
br i1 false, label %"4", label %"12"
"4": ; preds = %entry
br i1 undef, label %"5", label %"8"
"5": ; preds = %"4"
unreachable
"8": ; preds = %"4"
%8 = getelementptr inbounds i8* undef, i32 %6
br i1 undef, label %"13", label %"12"
"12": ; preds = %"8", %entry
ret void
"13": ; preds = %"8"
ret void
}