[Statepoint] Mark FixupStatepointCallerSaved as preserving the CFG

I'm hoping this will restore some compile time lost by D75936 and D75937. Differential Revision: https://reviews.llvm.org/D79813
llvm · May 13, 2020 · de92dc2 · de92dc2
1 parent 7a8edcb
commit de92dc2
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Showing 3 changed files with 2 additions and 4 deletions.
diff --git a/llvm/lib/CodeGen/FixupStatepointCallerSaved.cpp b/llvm/lib/CodeGen/FixupStatepointCallerSaved.cpp
@@ -57,6 +57,7 @@ class FixupStatepointCallerSaved : public MachineFunctionPass {
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
     MachineFunctionPass::getAnalysisUsage(AU);
   }
 

diff --git a/llvm/test/CodeGen/ARM/O3-pipeline.ll b/llvm/test/CodeGen/ARM/O3-pipeline.ll
@@ -128,9 +128,8 @@
 ; CHECK-NEXT:      Machine Loop Invariant Code Motion
 ; CHECK-NEXT:      Fixup Statepoint Caller Saved
 ; CHECK-NEXT:      PostRA Machine Sink
-; CHECK-NEXT:      MachineDominator Tree Construction
-; CHECK-NEXT:      Machine Natural Loop Construction
 ; CHECK-NEXT:      Machine Block Frequency Analysis
+; CHECK-NEXT:      MachineDominator Tree Construction
 ; CHECK-NEXT:      MachinePostDominator Tree Construction
 ; CHECK-NEXT:      Lazy Machine Block Frequency Analysis
 ; CHECK-NEXT:      Machine Optimization Remark Emitter

diff --git a/llvm/test/CodeGen/X86/O3-pipeline.ll b/llvm/test/CodeGen/X86/O3-pipeline.ll
@@ -146,8 +146,6 @@
 ; CHECK-NEXT:       X86 Load Value Injection (LVI) Load Hardening
 ; CHECK-NEXT:       Fixup Statepoint Caller Saved
 ; CHECK-NEXT:       PostRA Machine Sink
-; CHECK-NEXT:       MachineDominator Tree Construction
-; CHECK-NEXT:       Machine Natural Loop Construction
 ; CHECK-NEXT:       Machine Block Frequency Analysis
 ; CHECK-NEXT:       MachinePostDominator Tree Construction
 ; CHECK-NEXT:       Lazy Machine Block Frequency Analysis