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Add -alias and -ralias options to match what we have for functions and

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globals.

llvm-svn: 166909
This commit is contained in:
Rafael Espindola 2012-10-29 02:23:07 +00:00
parent c460831626
commit f030658478
2 changed files with 56 additions and 0 deletions
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9
test/Other/extract-alias.ll
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@ -1,5 +1,7 @@
; RUN: llvm-extract -func foo -S < %s | FileCheck %s
; RUN: llvm-extract -delete -func foo -S < %s | FileCheck --check-prefix=DELETE %s
; RUN: llvm-extract -alias zeda0 -S < %s | FileCheck --check-prefix=ALIAS %s
; RUN: llvm-extract -ralias .*bar -S < %s | FileCheck --check-prefix=ALIASRE %s
; Both aliases should be converted to declarations
; CHECK: @zeda0 = external global i32
@ -20,6 +22,13 @@
; DELETE-NEXT: ret void
; DELETE-NEXT: }
; ALIAS: @zed = external global i32
; ALIAS: @zeda0 = alias i32* @zed
; ALIASRE: @a0a0bar = alias void ()* @a0bar
; ALIASRE: @a0bar = alias void ()* @bar
; ALIASRE: declare void @bar()
@zed = global i32 0
@zeda0 = alias i32* @zed

47
tools/llvm-extract/llvm-extract.cpp
View File

@ -59,6 +59,19 @@ ExtractRegExpFuncs("rfunc", cl::desc("Specify function(s) to extract using a "
"regular expression"),
cl::ZeroOrMore, cl::value_desc("rfunction"));
// ExtractAlias - The alias to extract from the module.
static cl::list<std::string>
ExtractAliases("alias", cl::desc("Specify alias to extract"),
cl::ZeroOrMore, cl::value_desc("alias"));
// ExtractRegExpAliases - The aliases, matched via regular expression, to
// extract from the module.
static cl::list<std::string>
ExtractRegExpAliases("ralias", cl::desc("Specify alias(es) to extract using a "
"regular expression"),
cl::ZeroOrMore, cl::value_desc("ralias"));
// ExtractGlobals - The globals to extract from the module.
static cl::list<std::string>
ExtractGlobals("glob", cl::desc("Specify global to extract"),
@ -97,6 +110,40 @@ int main(int argc, char **argv) {
// Use SetVector to avoid duplicates.
SetVector<GlobalValue *> GVs;
// Figure out which aliases we should extract.
for (size_t i = 0, e = ExtractAliases.size(); i != e; ++i) {
GlobalAlias *GA = M->getNamedAlias(ExtractAliases[i]);
if (!GA) {
errs() << argv[0] << ": program doesn't contain alias named '"
<< ExtractAliases[i] << "'!\n";
return 1;
}
GVs.insert(GA);
}
// Extract aliases via regular expression matching.
for (size_t i = 0, e = ExtractRegExpAliases.size(); i != e; ++i) {
std::string Error;
Regex RegEx(ExtractRegExpAliases[i]);
if (!RegEx.isValid(Error)) {
errs() << argv[0] << ": '" << ExtractRegExpAliases[i] << "' "
"invalid regex: " << Error;
}
bool match = false;
for (Module::alias_iterator GA = M->alias_begin(), E = M->alias_end();
GA != E; GA++) {
if (RegEx.match(GA->getName())) {
GVs.insert(&*GA);
match = true;
}
}
if (!match) {
errs() << argv[0] << ": program doesn't contain global named '"
<< ExtractRegExpAliases[i] << "'!\n";
return 1;
}
}
// Figure out which globals we should extract.
for (size_t i = 0, e = ExtractGlobals.size(); i != e; ++i) {
GlobalValue *GV = M->getNamedGlobal(ExtractGlobals[i]);