Revert "[RISCV] Don't run loop-idiom-vectorize pass in the O0 pipeline. (#156798)"

topperc · topperc · commit 4dade90a4718 · 2025-09-04T09:44:58.000-07:00
This reverts commit c51db9f. Getting build bot failures about undefined symbol: llvm::OptimizationLevel::O0.
diff --git a/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp b/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
@@ -652,8 +652,7 @@ void RISCVPassConfig::addPostRegAlloc() {
 void RISCVTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) {
   PB.registerLateLoopOptimizationsEPCallback([=](LoopPassManager &LPM,
                                                  OptimizationLevel Level) {
-    if (Level != OptimizationLevel::O0)
-      LPM.addPass(LoopIdiomVectorizePass(LoopIdiomVectorizeStyle::Predicated));
+    LPM.addPass(LoopIdiomVectorizePass(LoopIdiomVectorizeStyle::Predicated));
   });
 }
 

Original file line number	Diff line number	Diff line change
`@@ -652,8 +652,7 @@ void RISCVPassConfig::addPostRegAlloc() {`
`652`	`652`	`void RISCVTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) {`
`653`	`653`	`PB.registerLateLoopOptimizationsEPCallback([=](LoopPassManager &LPM,`
`654`	`654`	`OptimizationLevel Level) {`
`655`		`- if (Level != OptimizationLevel::O0)`
`656`		`- LPM.addPass(LoopIdiomVectorizePass(LoopIdiomVectorizeStyle::Predicated));`
	`655`	`+ LPM.addPass(LoopIdiomVectorizePass(LoopIdiomVectorizeStyle::Predicated));`
`657`	`656`	`});`
`658`	`657`	`}`
`659`	`658`