Temporarily revert r71158. It was causing a failure during a full bootstrap:
checking for bcopy... no
checking for getc_unlocked... Assertion failed: (0 && "Unknown SCEV kind!"), function operator(), file /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/src/lib/Analysis/ScalarEvolution.cpp, line 511.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/libdecnumber/decUtility.c:360: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
make[4]: *** [decUtility.o] Error 1
make[4]: *** Waiting for unfinished jobs....
Assertion failed: (0 && "Unknown SCEV kind!"), function operator(), file /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/src/lib/Analysis/ScalarEvolution.cpp, line 511.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/libdecnumber/decNumber.c:5591: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
make[4]: *** [decNumber.o] Error 1
make[3]: *** [all-stage2-libdecnumber] Error 2
make[3]: *** Waiting for unfinished jobs....
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71165 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index 7c99325..ac2670a 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -16,7 +16,6 @@
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
-#include "llvm/GlobalVariable.h"
#include "llvm/Instructions.h"
#include "llvm/Intrinsics.h"
#include "llvm/ADT/SmallVector.h"
@@ -384,43 +383,12 @@
// the int size is >= the ptr size. This requires knowing the width of a
// pointer, so it can't be done in ConstantExpr::getCast.
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0])) {
- if (TD &&
+ if (TD && CE->getOpcode() == Instruction::PtrToInt &&
TD->getPointerSizeInBits() <=
CE->getType()->getPrimitiveSizeInBits()) {
- if (CE->getOpcode() == Instruction::PtrToInt) {
- Constant *Input = CE->getOperand(0);
- Constant *C = FoldBitCast(Input, DestTy, *TD);
- return C ? C : ConstantExpr::getBitCast(Input, DestTy);
- }
- // If there's a constant offset added to the integer value before
- // it is casted back to a pointer, see if the expression can be
- // converted into a GEP.
- if (CE->getOpcode() == Instruction::Add)
- if (ConstantInt *L = dyn_cast<ConstantInt>(CE->getOperand(0)))
- if (ConstantExpr *R = dyn_cast<ConstantExpr>(CE->getOperand(1)))
- if (R->getOpcode() == Instruction::PtrToInt)
- if (GlobalVariable *GV =
- dyn_cast<GlobalVariable>(R->getOperand(0))) {
- const PointerType *GVTy = cast<PointerType>(GV->getType());
- if (const ArrayType *AT =
- dyn_cast<ArrayType>(GVTy->getElementType())) {
- const Type *ElTy = AT->getElementType();
- uint64_t PaddedSize = TD->getTypePaddedSize(ElTy);
- APInt PSA(L->getValue().getBitWidth(), PaddedSize);
- if (ElTy == cast<PointerType>(DestTy)->getElementType() &&
- L->getValue().urem(PSA) == 0) {
- APInt ElemIdx = L->getValue().udiv(PSA);
- if (ElemIdx.ult(APInt(ElemIdx.getBitWidth(),
- AT->getNumElements()))) {
- Constant *Index[] = {
- Constant::getNullValue(CE->getType()),
- ConstantInt::get(ElemIdx)
- };
- return ConstantExpr::getGetElementPtr(GV, &Index[0], 2);
- }
- }
- }
- }
+ Constant *Input = CE->getOperand(0);
+ Constant *C = FoldBitCast(Input, DestTy, *TD);
+ return C ? C : ConstantExpr::getBitCast(Input, DestTy);
}
}
return ConstantExpr::getCast(Opcode, Ops[0], DestTy);