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[IRGen] Add flags to control LLVM verify-each.

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Analogous to -sil-verify-all, the new flags cause LLVM verification to
be run after each LLVM optimization pass.
This commit is contained in:
Nate Chandler
2025-03-14 17:49:17 -07:00
parent 974767eb83
commit dd8c715aa6
4 changed files with 14 additions and 2 deletions
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5
include/swift/AST/IRGenOptions.h
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@@ -272,6 +272,9 @@ public:
/// well-formed?
unsigned Verify : 1;
/// Whether to verify after every optimizer change.
unsigned VerifyEach : 1;
OptimizationMode OptMode;
/// Which sanitizer is turned on.
@@ -580,7 +583,7 @@ public:
IRGenOptions()
: OutputKind(IRGenOutputKind::LLVMAssemblyAfterOptimization),
Verify(true), OptMode(OptimizationMode::NotSet),
Verify(true), VerifyEach(false), OptMode(OptimizationMode::NotSet),
Sanitizers(OptionSet<SanitizerKind>()),
SanitizersWithRecoveryInstrumentation(OptionSet<SanitizerKind>()),
SanitizeAddressUseODRIndicator(false), SanitizerUseStableABI(false),

6
include/swift/Option/FrontendOptions.td
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@@ -592,6 +592,12 @@ def disable_swift_specific_llvm_optzns : Flag<["-"], "disable-swift-specific-llv
def disable_llvm_verify : Flag<["-"], "disable-llvm-verify">,
HelpText<"Don't run the LLVM IR verifier.">;
def enable_llvm_verify_each : Flag<["-"], "enable-llvm-verify-each">,
HelpText<"Run the LLVM IR verifier after every pass.">;
def disable_llvm_verify_each : Flag<["-"], "disable-llvm-verify-each">,
HelpText<"Don't run the LLVM IR verifier after every pass.">;
def disable_llvm_value_names : Flag<["-"], "disable-llvm-value-names">,
HelpText<"Don't add names to local values in LLVM IR">;

3
lib/Frontend/CompilerInvocation.cpp
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@@ -3235,6 +3235,9 @@ static bool ParseIRGenArgs(IRGenOptions &Opts, ArgList &Args,
if (Args.hasArg(OPT_disable_llvm_verify))
Opts.Verify = false;
Opts.VerifyEach = Args.hasFlag(OPT_enable_llvm_verify_each,
OPT_disable_llvm_verify_each, Opts.VerifyEach);
Opts.EmitStackPromotionChecks |= Args.hasArg(OPT_stack_promotion_checks);
if (const Arg *A = Args.getLastArg(OPT_stack_promotion_limit)) {
unsigned limit;

2
lib/IRGen/IRGen.cpp
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@@ -294,7 +294,7 @@ void swift::performLLVMOptimizations(const IRGenOptions &Opts,
PrintPassOpts.Indent = DebugPassStructure;
PrintPassOpts.SkipAnalyses = DebugPassStructure;
StandardInstrumentations SI(Module->getContext(), DebugPassStructure,
/*VerifyEach*/ false, PrintPassOpts);
Opts.VerifyEach, PrintPassOpts);
SI.registerCallbacks(PIC, &MAM);
PassBuilder PB(TargetMachine, PTO, PGOOpt, &PIC);