[llvm] 46a52ff - [TargetPassConfig] Run MachineVerifier after more passes.
Eli Friedman via llvm-commits
llvm-commits at lists.llvm.org
Tue Apr 21 21:05:49 PDT 2020
Author: Eli Friedman
Date: 2020-04-21T21:05:07-07:00
New Revision: 46a52ff9eda0750ff05311310774d954bcaf3408
URL: https://github.com/llvm/llvm-project/commit/46a52ff9eda0750ff05311310774d954bcaf3408
DIFF: https://github.com/llvm/llvm-project/commit/46a52ff9eda0750ff05311310774d954bcaf3408.diff
LOG: [TargetPassConfig] Run MachineVerifier after more passes.
We were disabling verification for no reason in a bunch of places; just
turn it on.
At this point, there are two key places where we don't run verification:
during register allocation, and after addPreEmitPass. Regalloc probably
isn't worth messing with; it has its own invariants, and verifying
afterwards is probably good enough. For after addPreEmitPass, it's
probably worth investigating improvements.
Added:
Modified:
llvm/lib/CodeGen/TargetPassConfig.cpp
Removed:
################################################################################
diff --git a/llvm/lib/CodeGen/TargetPassConfig.cpp b/llvm/lib/CodeGen/TargetPassConfig.cpp
index 336b1a883cf2..4432c3fa8f1f 100644
--- a/llvm/lib/CodeGen/TargetPassConfig.cpp
+++ b/llvm/lib/CodeGen/TargetPassConfig.cpp
@@ -934,7 +934,7 @@ void TargetPassConfig::addMachinePasses() {
} else {
// If the target requests it, assign local variables to stack slots relative
// to one another and simplify frame index references where possible.
- addPass(&LocalStackSlotAllocationID, false);
+ addPass(&LocalStackSlotAllocationID);
}
if (TM->Options.EnableIPRA)
@@ -1006,10 +1006,10 @@ void TargetPassConfig::addMachinePasses() {
addBlockPlacement();
// Insert before XRay Instrumentation.
- addPass(&FEntryInserterID, false);
+ addPass(&FEntryInserterID);
- addPass(&XRayInstrumentationID, false);
- addPass(&PatchableFunctionID, false);
+ addPass(&XRayInstrumentationID);
+ addPass(&PatchableFunctionID);
addPreEmitPass();
@@ -1018,6 +1018,8 @@ void TargetPassConfig::addMachinePasses() {
// clobbered registers, to be used to optimize call sites.
addPass(createRegUsageInfoCollector());
+ // FIXME: Some backends are incompatible with running the verifier after
+ // addPreEmitPass. Maybe only pass "false" here for those targets?
addPass(&FuncletLayoutID, false);
addPass(&StackMapLivenessID, false);
@@ -1048,15 +1050,15 @@ void TargetPassConfig::addMachineSSAOptimization() {
// Optimize PHIs before DCE: removing dead PHI cycles may make more
// instructions dead.
- addPass(&OptimizePHIsID, false);
+ addPass(&OptimizePHIsID);
// This pass merges large allocas. StackSlotColoring is a
diff erent pass
// which merges spill slots.
- addPass(&StackColoringID, false);
+ addPass(&StackColoringID);
// If the target requests it, assign local variables to stack slots relative
// to one another and simplify frame index references where possible.
- addPass(&LocalStackSlotAllocationID, false);
+ addPass(&LocalStackSlotAllocationID);
// With optimization, dead code should already be eliminated. However
// there is one known exception: lowered code for arguments that are only
@@ -1069,8 +1071,8 @@ void TargetPassConfig::addMachineSSAOptimization() {
// loop info, just like LICM and CSE below.
addILPOpts();
- addPass(&EarlyMachineLICMID, false);
- addPass(&MachineCSEID, false);
+ addPass(&EarlyMachineLICMID);
+ addPass(&MachineCSEID);
addPass(&MachineSinkingID);
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