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LowerBitSets: Add debugging output.

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Differential Revision: http://reviews.llvm.org/D11583

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243546 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Peter Collingbourne 2015-07-29 18:12:36 +00:00
parent 607fe5bb28
commit 63aeece879
2 changed files with 25 additions and 0 deletions
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3
include/llvm/Transforms/IPO/LowerBitSets.h
View File

@ -28,6 +28,7 @@ namespace llvm {
class DataLayout;
class GlobalVariable;
class Value;
class raw_ostream;
struct BitSetInfo {
// The indices of the set bits in the bitset.
@ -57,6 +58,8 @@ struct BitSetInfo {
bool containsValue(const DataLayout &DL,
const DenseMap<GlobalVariable *, uint64_t> &GlobalLayout,
Value *V, uint64_t COffset = 0) const;
void print(raw_ostream &OS) const;
};
struct BitSetBuilder {

22
lib/Transforms/IPO/LowerBitSets.cpp
View File

@ -26,6 +26,8 @@
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
using namespace llvm;
@ -90,6 +92,22 @@ bool BitSetInfo::containsValue(
return false;
}
void BitSetInfo::print(raw_ostream &OS) const {
OS << "offset " << ByteOffset << " size " << BitSize << " align "
<< (1 << AlignLog2);
if (isAllOnes()) {
OS << " all-ones\n";
return;
}
OS << " { ";
for (uint64_t B : Bits)
OS << B << ' ';
OS << "}\n";
return;
}
BitSetInfo BitSetBuilder::build() {
if (Min > Max)
Min = 0;
@ -532,6 +550,10 @@ void LowerBitSets::buildBitSetsFromGlobals(
for (MDString *BS : BitSets) {
// Build the bitset.
BitSetInfo BSI = buildBitSet(BS, GlobalLayout);
DEBUG({
dbgs() << BS->getString() << ": ";
BSI.print(dbgs());
});
ByteArrayInfo *BAI = 0;