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Fix a regression in the last patch. When constructing a BitMask, be careful

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not to overflow 64-bits and end up with a 0 mask. This caused i64 values to
always be stored as 0 with lots of consequential damage to nightly test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33335 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-01-18 18:01:32 +00:00
parent afd7a08a76
commit 8205972a5a
1 changed files with 4 additions and 0 deletions
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4
lib/ExecutionEngine/ExecutionEngine.cpp
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@ -457,6 +457,8 @@ void ExecutionEngine::StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
case Type::IntegerTyID: {
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
uint64_t BitMask = (1ull << BitWidth) - 1;
if (BitWidth >= 64)
BitMask = (uint64_t)-1;
GenericValue TmpVal = Val;
if (BitWidth <= 8)
Ptr->Untyped[0] = Val.Int8Val & BitMask;
@ -513,6 +515,8 @@ Store4BytesLittleEndian:
case Type::IntegerTyID: {
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
uint64_t BitMask = (1ull << BitWidth) - 1;
if (BitWidth >= 64)
BitMask = (uint64_t)-1;
GenericValue TmpVal = Val;
if (BitWidth <= 8)
Ptr->Untyped[0] = Val.Int8Val & BitMask;