[llvm-commits] [llvm] r50372 - /llvm/trunk/lib/Support/Allocator.cpp

[Chris Lattner]

On Apr 28, 2008, at 1:34 PM, Bill Wendling wrote:
> Does this go into Tak?

No.

-Chris

>
>
> On Mon, Apr 28, 2008 at 1:25 PM, Dan Gohman <gohman at apple.com> wrote:
>> Author: djg
>> Date: Mon Apr 28 15:25:15 2008
>> New Revision: 50372
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=50372&view=rev
>> Log:
>> Fix a pointer-arithmetic bug that caused 64-bit host pointer values  
>> to
>> be truncated to 32 bits. This fixes the recent Benchmarks/McCat/09- 
>> vor
>> regression on x86-64, among other things.
>>
>> Modified:
>>    llvm/trunk/lib/Support/Allocator.cpp
>>
>> Modified: llvm/trunk/lib/Support/Allocator.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Allocator.cpp?rev=50372&r1=50371&r2=50372&view=diff
>>
>> = 
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>> =====================================================================
>> --- llvm/trunk/lib/Support/Allocator.cpp (original)
>> +++ llvm/trunk/lib/Support/Allocator.cpp Mon Apr 28 15:25:15 2008
>> @@ -48,7 +48,7 @@
>>   void *Allocate(unsigned AllocSize, unsigned Alignment, MemRegion  
>> **RegPtr) {
>>
>>     char* Result = (char*) (((uintptr_t) (NextPtr+Alignment-1))
>> -                            & ~(Alignment-1));
>> +                            & ~((uintptr_t) Alignment-1));
>>
>>     // Speculate the new value of NextPtr.
>>     char* NextPtrTmp = Result + AllocSize;
>>
>>
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