AMDGPU: Fix recomputing dominator tree unnecessarily

SIFixSGPRCopies does not modify the CFG, but this was
being recomputed before running SIFoldOperands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248587 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AMDGPU/SIFixSGPRCopies.cpp b/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
index 55899b7..31051dd 100644 (file)
--- a/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
+++ b/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
@@ -105,6 +105,10 @@ public:
     return "SI Fix SGPR copies";
   }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
 };
 
 } // End anonymous namespace

diff --git a/lib/Target/AMDGPU/SIFoldOperands.cpp b/lib/Target/AMDGPU/SIFoldOperands.cpp
index ef37711..3a08b69 100644 (file)
--- a/lib/Target/AMDGPU/SIFoldOperands.cpp
+++ b/lib/Target/AMDGPU/SIFoldOperands.cpp
@@ -45,6 +45,7 @@ public:
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<MachineDominatorTree>();
+    AU.addPreserved<MachineDominatorTree>();
     AU.setPreservesCFG();
     MachineFunctionPass::getAnalysisUsage(AU);
   }

diff --git a/lib/Target/AMDGPU/SIInsertWaits.cpp b/lib/Target/AMDGPU/SIInsertWaits.cpp
index b47c09b..7ab4fd6 100644 (file)
--- a/lib/Target/AMDGPU/SIInsertWaits.cpp
+++ b/lib/Target/AMDGPU/SIInsertWaits.cpp
@@ -121,9 +121,13 @@ public:
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   const char *getPassName() const override {
-    return "SI insert wait  instructions";
+    return "SI insert wait instructions";
   }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
 };
 
 } // End anonymous namespace

diff --git a/lib/Target/AMDGPU/SILowerControlFlow.cpp b/lib/Target/AMDGPU/SILowerControlFlow.cpp
index d68eba2..359f759 100644 (file)
--- a/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ b/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -103,6 +103,10 @@ public:
     return "SI Lower control flow instructions";
   }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
 };
 
 } // End anonymous namespace

diff --git a/lib/Target/AMDGPU/SILowerI1Copies.cpp b/lib/Target/AMDGPU/SILowerI1Copies.cpp
index 67421e2..a2fa5fd 100644 (file)
--- a/lib/Target/AMDGPU/SILowerI1Copies.cpp
+++ b/lib/Target/AMDGPU/SILowerI1Copies.cpp
@@ -48,6 +48,7 @@ public:
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<MachineDominatorTree>();
+    AU.addPreserved<MachineDominatorTree>();
     AU.setPreservesCFG();
     MachineFunctionPass::getAnalysisUsage(AU);
   }

diff --git a/lib/Target/AMDGPU/SIPrepareScratchRegs.cpp b/lib/Target/AMDGPU/SIPrepareScratchRegs.cpp
index b086d2e..f6e57a6 100644 (file)
--- a/lib/Target/AMDGPU/SIPrepareScratchRegs.cpp
+++ b/lib/Target/AMDGPU/SIPrepareScratchRegs.cpp
@@ -47,6 +47,10 @@ public:
     return "SI prepare scratch registers";
   }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
 };
 
 } // End anonymous namespace