[llvm] r328727 - [PostRAMachineSink] preserve CFG

[Jun Bum Lim via llvm-commits]

Author: junbuml
Date: Wed Mar 28 12:56:26 2018
New Revision: 328727

URL: http://llvm.org/viewvc/llvm-project?rev=328727&view=rev
Log:
[PostRAMachineSink] preserve CFG

Summary: Mark CFG is preserved  since this pass do not make any change in CFG.

Reviewers: sebpop, mzolotukhin, mcrosier

Reviewed By: mzolotukhin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D44845

Modified:
    llvm/trunk/lib/CodeGen/MachineSink.cpp
    llvm/trunk/test/CodeGen/X86/O3-pipeline.ll

Modified: llvm/trunk/lib/CodeGen/MachineSink.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineSink.cpp?rev=328727&r1=328726&r2=328727&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineSink.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineSink.cpp Wed Mar 28 12:56:26 2018
@@ -948,6 +948,11 @@ public:
   PostRAMachineSinking() : MachineFunctionPass(ID) {}
   StringRef getPassName() const override { return "PostRA Machine Sink"; }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
+
 private:
   /// Track which registers have been modified and used.
   BitVector ModifiedRegs, UsedRegs;

Modified: llvm/trunk/test/CodeGen/X86/O3-pipeline.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/O3-pipeline.ll?rev=328727&r1=328726&r2=328727&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/O3-pipeline.ll (original)
+++ llvm/trunk/test/CodeGen/X86/O3-pipeline.ll Wed Mar 28 12:56:26 2018
@@ -120,8 +120,6 @@
 ; CHECK-NEXT:       Bundle Machine CFG Edges
 ; CHECK-NEXT:       X86 FP Stackifier
 ; 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:       Shrink Wrapping analysis