From 213a2f8b3f00d02324211dac1a4fcf9480110f80 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Thu, 17 Jan 2013 00:58:38 +0000 Subject: Provide a place for targets to insert ILP optimization passes. Move the early if-conversion pass into this group. ILP optimizations usually need to find the right balance between register pressure and ILP using the MachineTraceMetrics analysis to identify critical paths and estimate other costs. Such passes should run together so they can share dominator tree and loop info analyses. Besides if-conversion, future passes to run here here could include expression height reduction and ARM's MLxExpansion pass. llvm-svn: 172687 --- llvm/lib/Target/X86/X86TargetMachine.cpp | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'llvm/lib/Target/X86/X86TargetMachine.cpp') diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp index 706e64a09fd..799f140407b 100644 --- a/llvm/lib/Target/X86/X86TargetMachine.cpp +++ b/llvm/lib/Target/X86/X86TargetMachine.cpp @@ -151,6 +151,7 @@ public: } virtual bool addInstSelector(); + virtual bool addILPOpts(); virtual bool addPreRegAlloc(); virtual bool addPostRegAlloc(); virtual bool addPreEmitPass(); @@ -158,12 +159,7 @@ public: } // namespace TargetPassConfig *X86TargetMachine::createPassConfig(PassManagerBase &PM) { - X86PassConfig *PC = new X86PassConfig(this, PM); - - if (X86EarlyIfConv && Subtarget.hasCMov()) - PC->enablePass(&EarlyIfConverterID); - - return PC; + return new X86PassConfig(this, PM); } bool X86PassConfig::addInstSelector() { @@ -181,6 +177,14 @@ bool X86PassConfig::addInstSelector() { return false; } +bool X86PassConfig::addILPOpts() { + if (X86EarlyIfConv && getX86Subtarget().hasCMov()) { + addPass(&EarlyIfConverterID); + return true; + } + return false; +} + bool X86PassConfig::addPreRegAlloc() { return false; // -print-machineinstr shouldn't print after this. } -- cgit v1.2.3