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[llvm-exegesis] Error instead of aborting on verification failure #137581

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Merged
merged 2 commits into from
May 20, 2025
Merged

[llvm-exegesis] Error instead of aborting on verification failure #137581

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b094f29
[llvm-exegesis] Error instead of aborting on verification failure
boomanaiden154 Apr 28, 2025
405b801
Merge branch 'main' into exegesis-mc-verify-error-not-abort
boomanaiden154 May 15, 2025
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9 changes: 6 additions & 3 deletions llvm/tools/llvm-exegesis/lib/Assembler.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/Object/SymbolSize.h"
#include "llvm/Support/Alignment.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"

Expand Down Expand Up @@ -323,10 +324,8 @@ Error assembleToStream(const ExegesisTarget &ET,
TPC->printAndVerify("After ExegesisTarget::addTargetSpecificPasses");
// Adding the following passes:
// - postrapseudos: expands pseudo return instructions used on some targets.
// - machineverifier: checks that the MachineFunction is well formed.
// - prologepilog: saves and restore callee saved registers.
for (const char *PassName :
{"postrapseudos", "machineverifier", "prologepilog"})
for (const char *PassName : {"postrapseudos", "prologepilog"})
if (addPass(PM, PassName, *TPC))
return make_error<Failure>("Unable to add a mandatory pass");
TPC->setInitialized();
Expand All @@ -337,6 +336,10 @@ Error assembleToStream(const ExegesisTarget &ET,
return make_error<Failure>("Cannot add AsmPrinter passes");

PM.run(*Module); // Run all the passes
bool MFWellFormed =
MF.verify(nullptr, "llvm-exegesis Assembly", &outs(), false);
if (!MFWellFormed)
return make_error<Failure>("The machine function failed verification.");
return Error::success();
}

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