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Make shl instruction mask its result to the correct bitsize. This is

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sufficient to get llvm-test/SingleSource/UnitTests/Integer/general-test.ll
working with lli in interpreter mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33321 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-01-18 01:32:46 +00:00
parent 23e28836ed
commit 547dcf2467
1 changed files with 10 additions and 5 deletions
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15
lib/ExecutionEngine/Interpreter/Execution.cpp
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@ -1187,15 +1187,20 @@ static GenericValue executeShlInst(GenericValue Src1, GenericValue Src2,
GenericValue Dest;
if (const IntegerType *ITy = cast<IntegerType>(Ty)) {
unsigned BitWidth = ITy->getBitWidth();
if (BitWidth <= 8)
uint32_t BitMask = (1ull << BitWidth) - 1;
if (BitWidth <= 8) {
Dest.Int8Val = ((uint8_t)Src1.Int8Val) << ((uint32_t)Src2.Int8Val);
else if (BitWidth <= 16)
Dest.Int8Val &= BitMask;
} else if (BitWidth <= 16) {
Dest.Int16Val = ((uint16_t)Src1.Int16Val) << ((uint32_t)Src2.Int8Val);
else if (BitWidth <= 32)
Dest.Int16Val &= BitMask;
} else if (BitWidth <= 32) {
Dest.Int32Val = ((uint32_t)Src1.Int32Val) << ((uint32_t)Src2.Int8Val);
else if (BitWidth <= 64)
Dest.Int32Val &= BitMask;
} else if (BitWidth <= 64) {
Dest.Int64Val = ((uint64_t)Src1.Int64Val) << ((uint32_t)Src2.Int8Val);
else {
Dest.Int64Val &= BitMask;
} else {
cerr << "Integer types > 64 bits not supported: " << *Ty << "\n";
abort();
}