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Fix the code that was WRONG.

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The registers are placed into the saved registers list in the reverse order,
which is why the original loop was written to loop backwards.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148064 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2012-01-12 23:05:03 +00:00
parent d578b905de
commit 86b1a7d614
3 changed files with 208 additions and 13 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+65
View File
@@ -930,6 +930,71 @@ bool AsmPrinter::doFinalization(Module &M) {
if (const MCSection *S = MAI->getNonexecutableStackSection(OutContext))
OutStreamer.SwitchSection(S);
// If we have module flags, then emit them.
NamedMDNode *ModFlags = M.getNamedMetadata("llvm.module.flags");
if (ModFlags) {
const char *ObjCGCName = "Objective-C Garbage Collection";
const char *ObjCGCOnlyName = "Objective-C GC Only";
const char *ObjCImageInfoVersion = "Objective-C Image Info Version";
const char *ObjCImageInfoSec = "Objective-C Image Info Section";
MDNode *GC = 0;
MDNode *GCOnly = 0;
MDNode *ImageInfoVersion = 0;
MDNode *ImageInfoSec = 0;
for (unsigned I = 0, E = ModFlags->getNumOperands(); I != E; ++I) {
MDNode *MD = ModFlags->getOperand(I);
unsigned Behavior = cast<ConstantInt>(MD->getOperand(0))->getZExtValue();
(void) Behavior;
MDString *Str = cast<MDString>(MD->getOperand(1));
if (Str->getString() == ObjCImageInfoVersion) {
assert(Behavior == 1 && "Invalid behavior for module flag!");
ImageInfoVersion = MD;
} else if (Str->getString() == ObjCGCName) {
assert((Behavior == 1 || Behavior == 3) &&
"Invalid behavior for module flag!");
GC = MD;
} else if (Str->getString() == ObjCGCOnlyName) {
if (Behavior == 2) continue; // Ignore the 'require' clause.
GCOnly = MD;
} else if (Str->getString() == ObjCImageInfoSec) {
assert(Behavior == 1 && "Invalid behavior for module flag!");
ImageInfoSec = MD;
}
}
if (ImageInfoVersion || GC || GCOnly || ImageInfoSec) {
// FIXME: Duh!
unsigned version = 0;
unsigned flags = 0;
version =
cast<ConstantInt>(ImageInfoVersion->getOperand(2))->getZExtValue();
if (GC)
flags |= cast<ConstantInt>(GC->getOperand(2))->getZExtValue();
if (GCOnly)
flags |= cast<ConstantInt>(GCOnly->getOperand(2))->getZExtValue();
Type *Int32Ty = Type::getInt32Ty(M.getContext());
Constant *values[2] = {
ConstantInt::get(Int32Ty, version),
ConstantInt::get(Int32Ty, flags)
};
ArrayType *AT = ArrayType::get(Int32Ty, 2);
StringRef Sec = cast<MDString>(ImageInfoSec->getOperand(2))->getString();
GlobalVariable *GV =
cast<GlobalVariable>(M.getOrInsertGlobal("L_OBJC_IMAGE_INFO", AT));
GV->setConstant(true);
GV->setSection(Sec);
GV->setInitializer(ConstantArray::get(AT, values));
EmitGlobalVariable(GV);
}
}
// Allow the target to emit any magic that it wants at the end of the file,
// after everything else has gone out.
EmitEndOfAsmFile(M);