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Use std::map rather than SmallMap because SmallMap assumes that the value has

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POD type, causing memory corruption when mapping to APInts with bitwidth > 64.
Merge another crash testcase into crash.ll while there.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158369 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2012-06-12 20:16:51 +00:00
parent 49d6fc02ef
commit ac071eac30
3 changed files with 17 additions and 15 deletions
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3
lib/Transforms/Scalar/Reassociate.cpp
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@ -38,7 +38,6 @@
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include <algorithm>
@ -486,7 +485,7 @@ static bool LinearizeExprTree(BinaryOperator *I,
// Leaves - Keeps track of the set of putative leaves as well as the number of
// paths to each leaf seen so far.
typedef SmallMap<Value*, APInt, 8> LeafMap;
typedef std::map<Value*, APInt> LeafMap;
LeafMap Leaves; // Leaf -> Total weight so far.
SmallVector<Value*, 8> LeafOrder; // Ensure deterministic leaf output order.

13
test/Transforms/Reassociate/2005-08-24-Crash.ll
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@ -1,13 +0,0 @@
; RUN: opt < %s -reassociate -disable-output
define void @test(i32 %a, i32 %b, i32 %c, i32 %d) {
%tmp.2 = xor i32 %a, %b ; <i32> [#uses=1]
%tmp.5 = xor i32 %c, %d ; <i32> [#uses=1]
%tmp.6 = xor i32 %tmp.2, %tmp.5 ; <i32> [#uses=1]
%tmp.9 = xor i32 %c, %a ; <i32> [#uses=1]
%tmp.12 = xor i32 %b, %d ; <i32> [#uses=1]
%tmp.13 = xor i32 %tmp.9, %tmp.12 ; <i32> [#uses=1]
%tmp.16 = xor i32 %tmp.6, %tmp.13 ; <i32> [#uses=0]
ret void
}

16
test/Transforms/Reassociate/crash.ll
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@ -67,3 +67,19 @@ _33: ; preds = %_33, %_
%tmp367 = add i32 %tmp365, %tmp366
br label %_33
}
define void @test(i32 %a, i32 %b, i32 %c, i32 %d) {
%tmp.2 = xor i32 %a, %b ; <i32> [#uses=1]
%tmp.5 = xor i32 %c, %d ; <i32> [#uses=1]
%tmp.6 = xor i32 %tmp.2, %tmp.5 ; <i32> [#uses=1]
%tmp.9 = xor i32 %c, %a ; <i32> [#uses=1]
%tmp.12 = xor i32 %b, %d ; <i32> [#uses=1]
%tmp.13 = xor i32 %tmp.9, %tmp.12 ; <i32> [#uses=1]
%tmp.16 = xor i32 %tmp.6, %tmp.13 ; <i32> [#uses=0]
ret void
}
define i128 @foo() {
%mul = mul i128 0, 0
ret i128 %mul
}