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Fix (and test) function-local metadata that occurs before the instruction that it refers to; fix is to not enumerate operands of function-local metadata until after all instructions have been enumerated

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95269 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Victor Hernandez 2010-02-04 01:13:08 +00:00
parent ec5ef6d8b0
commit af6ce14d67
2 changed files with 10 additions and 4 deletions
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12
lib/Bitcode/Writer/ValueEnumerator.cpp
View File

@ -408,21 +408,25 @@ void ValueEnumerator::incorporateFunction(const Function &F) {
FirstInstID = Values.size();
SmallVector<MDNode *, 8> FunctionLocalMDs;
// Add all of the instructions.
for (Function::const_iterator BB = F.begin(), E = F.end(); BB != E; ++BB) {
for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E; ++I) {
for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
OI != E; ++OI) {
if (MDNode *MD = dyn_cast<MDNode>(*OI))
if (!MD->isFunctionLocal())
// These were already enumerated during ValueEnumerator creation.
continue;
EnumerateOperandType(*OI);
if (MD->isFunctionLocal())
// Enumerate metadata after the instructions they might refer to.
FunctionLocalMDs.push_back(MD);
}
if (!I->getType()->isVoidTy())
EnumerateValue(I);
}
}
// Add all of the function-local metadata.
for (unsigned i = 0, e = FunctionLocalMDs.size(); i != e; ++i)
EnumerateOperandType(FunctionLocalMDs[i]);
}
void ValueEnumerator::purgeFunction() {

2
test/Assembler/functionlocal-metadata.ll
View File

@ -2,6 +2,8 @@
define void @Foo(i32 %a, i32 %b) {
entry:
call void @llvm.dbg.value(metadata !{ i32* %1 }, i64 16, metadata !"bar")
; CHECK: call void @llvm.dbg.value(metadata !{i32* %1}, i64 16, metadata !"bar")
%0 = add i32 %a, 1 ; <i32> [#uses=1]
%two = add i32 %b, %0 ; <i32> [#uses=0]
%1 = alloca i32 ; <i32*> [#uses=1]