[PowerPC] set optimization level in SelectionDAGISel

PowerPC backend does not pass the current optimization level to SelectionDAGISel and so SelectionDAGISel works with the default optimization level regardless of the current optimization level.
This patch makes the PowerPC backend set the optimization level correctly.

Differential Revision: https://reviews.llvm.org/D34615

llvm-svn: 306367

3 files changed, 8 insertions, 6 deletions

diff --git a/llvm/lib/Target/PowerPC/PPC.h b/llvm/lib/Target/PowerPC/PPC.h
index 07c9c1f9f84..476dfc0c865 100644
--- a/llvm/lib/Target/PowerPC/PPC.h
+++ b/llvm/lib/Target/PowerPC/PPC.h
@@ -15,6 +15,7 @@
 #ifndef LLVM_LIB_TARGET_POWERPC_PPC_H
 #define LLVM_LIB_TARGET_POWERPC_PPC_H
 
+#include "llvm/Support/CodeGen.h"
 #include "MCTargetDesc/PPCMCTargetDesc.h"
 
 // GCC #defines PPC on Linux but we use it as our namespace name
@@ -41,7 +42,7 @@ namespace llvm {
   FunctionPass *createPPCMIPeepholePass();
   FunctionPass *createPPCBranchSelectionPass();
   FunctionPass *createPPCQPXLoadSplatPass();
-  FunctionPass *createPPCISelDag(PPCTargetMachine &TM);
+  FunctionPass *createPPCISelDag(PPCTargetMachine &TM, CodeGenOpt::Level OL);
   FunctionPass *createPPCTLSDynamicCallPass();
   FunctionPass *createPPCBoolRetToIntPass();
   FunctionPass *createPPCExpandISELPass();
diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index afd2e87078a..535b9deaefa 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -114,8 +114,8 @@ namespace {
     unsigned GlobalBaseReg;
 
   public:
-    explicit PPCDAGToDAGISel(PPCTargetMachine &tm)
-        : SelectionDAGISel(tm), TM(tm) {}
+    explicit PPCDAGToDAGISel(PPCTargetMachine &tm, CodeGenOpt::Level OptLevel)
+        : SelectionDAGISel(tm, OptLevel), TM(tm) {}
 
     bool runOnMachineFunction(MachineFunction &MF) override {
       // Make sure we re-emit a set of the global base reg if necessary
@@ -5116,6 +5116,7 @@ void PPCDAGToDAGISel::PeepholePPC64() {
 /// createPPCISelDag - This pass converts a legalized DAG into a
 /// PowerPC-specific DAG, ready for instruction scheduling.
 ///
-FunctionPass *llvm::createPPCISelDag(PPCTargetMachine &TM) {
-  return new PPCDAGToDAGISel(TM);
+FunctionPass *llvm::createPPCISelDag(PPCTargetMachine &TM,
+                                     CodeGenOpt::Level OptLevel) {
+  return new PPCDAGToDAGISel(TM, OptLevel);
 }
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index a88a6541e8d..f6bef33fd13 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -352,7 +352,7 @@ bool PPCPassConfig::addILPOpts() {
 
 bool PPCPassConfig::addInstSelector() {
   // Install an instruction selector.
-  addPass(createPPCISelDag(getPPCTargetMachine()));
+  addPass(createPPCISelDag(getPPCTargetMachine(), getOptLevel()));
 
 #ifndef NDEBUG
   if (!DisableCTRLoops && getOptLevel() != CodeGenOpt::None)