diff options
| author | Robert Bocchino <bocchino@illinois.edu> | 2006-01-19 23:53:23 +0000 |
|---|---|---|
| committer | Robert Bocchino <bocchino@illinois.edu> | 2006-01-19 23:53:23 +0000 |
| commit | d900c6a8b3de655bac138cfdf4b9a85b7e64ec1c (patch) | |
| tree | 8bbee1f21af17e8ba84f502ee7275dfcf6b0a2ff /lib/Transforms | |
| parent | cce47faf522711223ca09163765f42c5fe71ee9d (diff) | |
ConstantFoldLoadThroughGEPConstantExpr wasn't handling pointers to
packed types correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25470 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Utils/Local.cpp | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index f2598c16ce..9685e94cc1 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/lib/Transforms/Utils/Local.cpp @@ -267,16 +267,29 @@ Constant *llvm::ConstantFoldLoadThroughGEPConstantExpr(Constant *C, return 0; } } else if (ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand())) { - const ArrayType *ATy = cast<ArrayType>(*I); - if ((uint64_t)CI->getRawValue() >= ATy->getNumElements()) return 0; - if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) - C = CA->getOperand((unsigned)CI->getRawValue()); - else if (isa<ConstantAggregateZero>(C)) - C = Constant::getNullValue(ATy->getElementType()); - else if (isa<UndefValue>(C)) - C = UndefValue::get(ATy->getElementType()); - else + if (const ArrayType *ATy = dyn_cast<ArrayType>(*I)) { + if ((uint64_t)CI->getRawValue() >= ATy->getNumElements()) return 0; + if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) + C = CA->getOperand((unsigned)CI->getRawValue()); + else if (isa<ConstantAggregateZero>(C)) + C = Constant::getNullValue(ATy->getElementType()); + else if (isa<UndefValue>(C)) + C = UndefValue::get(ATy->getElementType()); + else + return 0; + } else if (const PackedType *PTy = dyn_cast<PackedType>(*I)) { + if ((uint64_t)CI->getRawValue() >= PTy->getNumElements()) return 0; + if (ConstantPacked *CP = dyn_cast<ConstantPacked>(C)) + C = CP->getOperand((unsigned)CI->getRawValue()); + else if (isa<ConstantAggregateZero>(C)) + C = Constant::getNullValue(PTy->getElementType()); + else if (isa<UndefValue>(C)) + C = UndefValue::get(PTy->getElementType()); + else + return 0; + } else { return 0; + } } else { return 0; } |