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Add a temporary option for llc-beta: -enable-lsr-for-ppc, which turns on 

Loop Strength Reduction.

llvm-svn: 20399
This commit is contained in:
Chris Lattner 2005-03-02 06:19:22 +00:00
parent a556669219
commit c8bb99760a
1 changed files with 10 additions and 0 deletions
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10
llvm/lib/Target/PowerPC/PowerPCTargetMachine.cpp
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@ -33,6 +33,10 @@ namespace llvm {
cl::opt<bool> AIX("aix",
cl::desc("Generate AIX/xcoff instead of Darwin/MachO"),
cl::Hidden);
cl::opt<bool> EnablePPCLSR("enable-lsr-for-ppc",
cl::desc("Enable LSR for PPC (beta option!)"),
cl::Hidden);
}
namespace {
@ -70,6 +74,9 @@ unsigned PPC32TargetMachine::getJITMatchQuality() {
bool PowerPCTargetMachine::addPassesToEmitAssembly(PassManager &PM,
std::ostream &Out) {
bool LP64 = (0 != dynamic_cast<PPC64TargetMachine *>(this));
if (EnablePPCLSR)
PM.add(createLoopStrengthReducePass());
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());
@ -113,6 +120,9 @@ bool PowerPCTargetMachine::addPassesToEmitAssembly(PassManager &PM,
}
void PowerPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
if (EnablePPCLSR)
PM.add(createLoopStrengthReducePass());
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());