RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-20 19:42:54 +02:00
Code Issues Projects Releases Wiki Activity

Reduce code duplication.

Browse Source 
llvm-svn: 246017
This commit is contained in:
Alex Rosenberg 2015-08-26 06:11:38 +00:00
parent 8242d19f7c
commit 9cb69096ff
1 changed files with 23 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
lib/Transforms/Utils/MetaRenamer.cpp
View File

@ -42,6 +42,24 @@ namespace {
}
};
static const char *const metaNames[] = {
// See http://en.wikipedia.org/wiki/Metasyntactic_variable
"foo", "bar", "baz", "quux", "barney", "snork", "zot", "blam", "hoge",
"wibble", "wobble", "widget", "wombat", "ham", "eggs", "pluto", "spam"
};
struct Renamer {
Renamer(unsigned int seed) {
prng.srand(seed);
}
const char *newName() {
return metaNames[prng.rand() % array_lengthof(metaNames)];
}
PRNG prng;
};
struct MetaRenamer : public ModulePass {
static char ID; // Pass identification, replacement for typeid
MetaRenamer() : ModulePass(ID) {
@ -53,12 +71,6 @@ namespace {
}
bool runOnModule(Module &M) override {
static const char *const metaNames[] = {
// See http://en.wikipedia.org/wiki/Metasyntactic_variable
"foo", "bar", "baz", "quux", "barney", "snork", "zot", "blam", "hoge",
"wibble", "wobble", "widget", "wombat", "ham", "eggs", "pluto", "spam"
};
// Seed our PRNG with simple additive sum of ModuleID. We're looking to
// simply avoid always having the same function names, and we need to
// remain deterministic.
@ -67,9 +79,8 @@ namespace {
E = M.getModuleIdentifier().end(); I != E; ++I)
randSeed += *I;
PRNG prng;
prng.srand(randSeed);
Renamer renamer(randSeed);
// Rename all aliases
for (Module::alias_iterator AI = M.alias_begin(), AE = M.alias_end();
AI != AE; ++AI) {
@ -98,8 +109,8 @@ namespace {
if (STy->isLiteral() || STy->getName().empty()) continue;
SmallString<128> NameStorage;
STy->setName((Twine("struct.") + metaNames[prng.rand() %
array_lengthof(metaNames)]).toStringRef(NameStorage));
STy->setName((Twine("struct.") +
renamer.newName()).toStringRef(NameStorage));
}
// Rename all functions
@ -109,7 +120,7 @@ namespace {
if (Name.startswith("llvm.") || (!Name.empty() && Name[0] == 1))
continue;
FI->setName(metaNames[prng.rand() % array_lengthof(metaNames)]);
FI->setName(renamer.newName());
runOnFunction(*FI);
}
return true;