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DI: Fold constant arguments into a single MDString

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This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218914 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-10-02 21:56:57 +00:00
parent bf21d40070
commit 0917b70630
354 changed files with 6806 additions and 6707 deletions
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lib/CodeGen/MachineInstr.cpp
+5 -5
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@@ -1643,11 +1643,11 @@ void MachineInstr::print(raw_ostream &OS, const TargetMachine *TM,
if (isDebugValue() && MO.isMetadata()) {
// Pretty print DBG_VALUE instructions.
const MDNode *MD = MO.getMetadata();
if (MD->getNumOperands() >= 2)
if (const MDString *MDS = dyn_cast<MDString>(MD->getOperand(2)))
OS << "!\"" << MDS->getString() << '\"';
else
MO.print(OS, TM);
DIDescriptor DI(MD);
DIVariable DIV(MD);
if (DI.isVariable() && !DIV.getName().empty())
OS << "!\"" << DIV.getName() << '\"';
else
MO.print(OS, TM);
} else if (TM && (isInsertSubreg() || isRegSequence()) && MO.isImm()) {