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llc: Add a 'run-pass' option.

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This commit adds a 'run-pass' option to llc, which instructs the compiler to run
one specific code generation pass only.

Llc already has the 'start-after' and the 'stop-after' options, and this new
option complements the other two by making it easier to write tests that want
to invoke a single pass only.

Reviewers: Duncan P. N. Exon Smith

Differential Revision: http://reviews.llvm.org/D10776


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241476 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-07-06 17:44:26 +00:00
parent b560f9ca2f
commit edfa571cbd
9 changed files with 81 additions and 42 deletions
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10
lib/CodeGen/Passes.cpp
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@@ -214,10 +214,10 @@ TargetPassConfig::~TargetPassConfig() {
// Out of line constructor provides default values for pass options and
// registers all common codegen passes.
TargetPassConfig::TargetPassConfig(TargetMachine *tm, PassManagerBase &pm)
: ImmutablePass(ID), PM(&pm), StartAfter(nullptr), StopAfter(nullptr),
Started(true), Stopped(false), AddingMachinePasses(false), TM(tm),
Impl(nullptr), Initialized(false), DisableVerify(false),
EnableTailMerge(true), EnableShrinkWrap(false) {
: ImmutablePass(ID), PM(&pm), StartBefore(nullptr), StartAfter(nullptr),
StopAfter(nullptr), Started(true), Stopped(false),
AddingMachinePasses(false), TM(tm), Impl(nullptr), Initialized(false),
DisableVerify(false), EnableTailMerge(true), EnableShrinkWrap(false) {
Impl = new PassConfigImpl();
@@ -288,6 +288,8 @@ void TargetPassConfig::addPass(Pass *P, bool verifyAfter, bool printAfter) {
// and shouldn't reference it.
AnalysisID PassID = P->getPassID();
if (StartBefore == PassID)
Started = true;
if (Started && !Stopped) {
std::string Banner;
// Construct banner message before PM->add() as that may delete the pass.