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Fix llvm-extract -delete's lazy loading to materialize the functions that

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will not be deleted, rather than the ones that will.

llvm-svn: 114614
This commit is contained in:
Dan Gohman 2010-09-23 00:33:13 +00:00
parent d8735f1db1
commit 007957687e
2 changed files with 56 additions and 7 deletions
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22
test/Other/extract.ll Normal file
View File

@ -0,0 +1,22 @@
; RUN: llvm-extract -func foo -S < %s | FileCheck %s
; RUN: llvm-extract -delete -func foo -S < %s | FileCheck --check-prefix=DELETE %s
; RUN: llvm-as < %s > %t
; RUN: llvm-extract -func foo -S %t | FileCheck %s
; RUN: llvm-extract -delete -func foo -S %t | FileCheck --check-prefix=DELETE %s
; llvm-extract uses lazy bitcode loading, so make sure it correctly reads
; from bitcode files in addition to assembly files.
; CHECK: define void @foo() {
; CHECK: ret void
; CHECK: }
; DELETE: define void @bar() {
; DELETE: ret void
; DELETE: }
define void @foo() {
ret void
}
define void @bar() {
ret void
}

41
tools/llvm-extract/llvm-extract.cpp
View File

@ -26,6 +26,7 @@
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Signals.h"
#include "llvm/ADT/SmallPtrSet.h"
#include <memory>
using namespace llvm;
@ -102,13 +103,39 @@ int main(int argc, char **argv) {
}
// Materialize requisite global values.
for (size_t i = 0, e = GVs.size(); i != e; ++i) {
GlobalValue *GV = GVs[i];
if (GV->isMaterializable()) {
std::string ErrInfo;
if (GV->Materialize(&ErrInfo)) {
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
return 1;
if (!DeleteFn)
for (size_t i = 0, e = GVs.size(); i != e; ++i) {
GlobalValue *GV = GVs[i];
if (GV->isMaterializable()) {
std::string ErrInfo;
if (GV->Materialize(&ErrInfo)) {
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
return 1;
}
}
}
else {
// Deleting. Materialize every GV that's *not* in GVs.
SmallPtrSet<GlobalValue *, 8> GVSet(GVs.begin(), GVs.end());
for (Module::global_iterator I = M->global_begin(), E = M->global_end();
I != E; ++I) {
GlobalVariable *G = I;
if (!GVSet.count(G) && G->isMaterializable()) {
std::string ErrInfo;
if (G->Materialize(&ErrInfo)) {
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
return 1;
}
}
}
for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I) {
Function *F = I;
if (!GVSet.count(F) && F->isMaterializable()) {
std::string ErrInfo;
if (F->Materialize(&ErrInfo)) {
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
return 1;
}
}
}
}