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One more bugfix, 3 cases of making casts explicit.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32043 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-11-30 17:32:29 +00:00
parent 9a989f0f97
commit 6e8fbad675
1 changed files with 8 additions and 5 deletions
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13
lib/Transforms/IPO/GlobalOpt.cpp
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@ -572,7 +572,8 @@ static bool OptimizeAwayTrappingUsesOfValue(Value *V, Constant *NewV) {
}
} else if (CastInst *CI = dyn_cast<CastInst>(I)) {
Changed |= OptimizeAwayTrappingUsesOfValue(CI,
ConstantExpr::getCast(NewV, CI->getType()));
ConstantExpr::getCast(CI->getOpcode(),
NewV, CI->getType()));
if (CI->use_empty()) {
Changed = true;
CI->eraseFromParent();
@ -670,7 +671,7 @@ static void ConstantPropUsersOf(Value *V) {
/// variable, and transforms the program as if it always contained the result of
/// the specified malloc. Because it is always the result of the specified
/// malloc, there is no reason to actually DO the malloc. Instead, turn the
/// malloc into a global, and any laods of GV as uses of the new global.
/// malloc into a global, and any loads of GV as uses of the new global.
static GlobalVariable *OptimizeGlobalAddressOfMalloc(GlobalVariable *GV,
MallocInst *MI) {
DOUT << "PROMOTING MALLOC GLOBAL: " << *GV << " MALLOC = " << *MI;
@ -707,7 +708,8 @@ static GlobalVariable *OptimizeGlobalAddressOfMalloc(GlobalVariable *GV,
Constant *RepValue = NewGV;
if (NewGV->getType() != GV->getType()->getElementType())
RepValue = ConstantExpr::getCast(RepValue, GV->getType()->getElementType());
RepValue = ConstantExpr::getCast(Instruction::BitCast,
RepValue, GV->getType()->getElementType());
// If there is a comparison against null, we will insert a global bool to
// keep track of whether the global was initialized yet or not.
@ -1056,7 +1058,8 @@ static bool OptimizeOnceStoredGlobal(GlobalVariable *GV, Value *StoredOnceVal,
GV->getInitializer()->isNullValue()) {
if (Constant *SOVC = dyn_cast<Constant>(StoredOnceVal)) {
if (GV->getInitializer()->getType() != SOVC->getType())
SOVC = ConstantExpr::getCast(SOVC, GV->getInitializer()->getType());
SOVC = ConstantExpr::getCast(Instruction::BitCast,
SOVC, GV->getInitializer()->getType());
// Optimize away any trapping uses of the loaded value.
if (OptimizeAwayTrappingUsesOfLoads(GV, SOVC))
@ -1507,7 +1510,7 @@ static GlobalVariable *InstallGlobalCtors(GlobalVariable *GCL,
if (!GCL->use_empty()) {
Constant *V = NGV;
if (V->getType() != GCL->getType())
V = ConstantExpr::getCast(V, GCL->getType());
V = ConstantExpr::getCast(Instruction::BitCast, V, GCL->getType());
GCL->replaceAllUsesWith(V);
}
GCL->eraseFromParent();