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add a new bugpoint mode -llc-safe. This uses LLC for both halves of a

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miscompilation.  This is useful for working around GCC+CBE bugs or for handling
programs that CBE doesn't support (e.g. inline asm) when searching for
optimizer bugs.

llvm-svn: 31588
This commit is contained in:
Chris Lattner 2006-11-09 05:57:53 +00:00
parent 71c31643ad
commit 3488208b8e
1 changed files with 9 additions and 3 deletions
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12
tools/bugpoint/ExecutionDriver.cpp
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@ -28,7 +28,7 @@ namespace {
// for miscompilation.
//
enum OutputType {
AutoPick, RunLLI, RunJIT, RunLLC, RunCBE, CBE_bug
AutoPick, RunLLI, RunJIT, RunLLC, RunCBE, CBE_bug, LLC_Safe
};
cl::opt<double>
@ -47,6 +47,7 @@ namespace {
clEnumValN(RunLLC, "run-llc", "Compile with LLC"),
clEnumValN(RunCBE, "run-cbe", "Compile with CBE"),
clEnumValN(CBE_bug,"cbe-bug", "Find CBE bugs"),
clEnumValN(LLC_Safe, "llc-safe", "Use LLC for all"),
clEnumValEnd),
cl::init(AutoPick));
@ -133,6 +134,10 @@ bool BugDriver::initializeExecutionEnvironment() {
Interpreter = AbstractInterpreter::createJIT(getToolName(), Message,
&ToolArgv);
break;
case LLC_Safe:
Interpreter = AbstractInterpreter::createLLC(getToolName(), Message,
&ToolArgv);
break;
case RunCBE:
case CBE_bug:
Interpreter = AbstractInterpreter::createCBE(getToolName(), Message,
@ -148,8 +153,9 @@ bool BugDriver::initializeExecutionEnvironment() {
if (InterpreterSel == RunCBE) {
// We already created a CBE, reuse it.
cbe = Interpreter;
} else if (InterpreterSel == CBE_bug) {
// We want to debug the CBE itself. Use LLC as the 'known-good' compiler.
} else if (InterpreterSel == CBE_bug || InterpreterSel == LLC_Safe) {
// We want to debug the CBE itself or LLC is known-good. Use LLC as the
// 'known-good' compiler.
std::vector<std::string> ToolArgs;
ToolArgs.push_back("--relocation-model=pic");
cbe = AbstractInterpreter::createLLC(getToolName(), Message, &ToolArgs);