[LegacyPassManager] Remove TargetMachine constructors

This provides a new way to access the TargetMachine through
TargetPassConfig, as a dependency.

The patterns replaced here are:

* Passes handling a null TargetMachine call
  `getAnalysisIfAvailable<TargetPassConfig>`.

* Passes not handling a null TargetMachine
  `addRequired<TargetPassConfig>` and call
  `getAnalysis<TargetPassConfig>`.

* MachineFunctionPasses now use MF.getTarget().

* Remove all the TargetMachine constructors.
* Remove INITIALIZE_TM_PASS.

This fixes a crash when running `llc -start-before prologepilog`.

PEI needs StackProtector, which gets constructed without a TargetMachine
by the pass manager. The StackProtector pass doesn't handle the case
where there is no TargetMachine, so it segfaults.

Related to PR30324.

Differential Revision: https://reviews.llvm.org/D33222

llvm-svn: 303360

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/Mips/MipsOptimizePICCall.cpp b/llvm/lib/Target/Mips/MipsOptimizePICCall.cpp
index f8d9c34556b..94a1965f9ff 100644
--- a/llvm/lib/Target/Mips/MipsOptimizePICCall.cpp
+++ b/llvm/lib/Target/Mips/MipsOptimizePICCall.cpp
@@ -59,7 +59,7 @@ private:
 
 class OptimizePICCall : public MachineFunctionPass {
 public:
-  OptimizePICCall(TargetMachine &tm) : MachineFunctionPass(ID) {}
+  OptimizePICCall() : MachineFunctionPass(ID) {}
 
   StringRef getPassName() const override { return "Mips OptimizePICCall"; }
 
@@ -297,6 +297,6 @@ void OptimizePICCall::incCntAndSetReg(ValueType Entry, unsigned Reg) {
 }
 
 /// Return an OptimizeCall object.
-FunctionPass *llvm::createMipsOptimizePICCallPass(MipsTargetMachine &TM) {
-  return new OptimizePICCall(TM);
+FunctionPass *llvm::createMipsOptimizePICCallPass() {
+  return new OptimizePICCall();
 }