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move a bunch of code out of the sdisel pass into its own opt pass "codegenprepare".

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35529 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-03-31 04:18:03 +00:00
parent dbe0deca33
commit c8d288f8fa
2 changed files with 21 additions and 485 deletions
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22
lib/CodeGen/LLVMTargetMachine.cpp
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@ -23,7 +23,7 @@
using namespace llvm;
static cl::opt<bool> PrintLSR("print-lsr-output");
static cl::opt<bool> PrintISelInput("print-isel-input");
FileModel::Model
LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
std::ostream &Out,
@ -48,6 +48,13 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
if (!Fast)
PM.add(createCodeGenPreparePass(getTargetLowering()));
if (PrintISelInput)
PM.add(new PrintFunctionPass("\n\n*** Final LLVM Code input to ISel *** \n",
&cerr));
// Ask the target for an isel.
if (addInstSelector(PM, Fast))
return FileModel::Error;
@ -126,7 +133,11 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
// Standard LLVM-Level Passes.
// Run loop strength reduction before anything else.
if (!Fast) PM.add(createLoopStrengthReducePass(getTargetLowering()));
if (!Fast) {
PM.add(createLoopStrengthReducePass(getTargetLowering()));
if (PrintLSR)
PM.add(new PrintFunctionPass("\n\n*** Code after LSR *** \n", &cerr));
}
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());
@ -137,6 +148,13 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
if (!Fast)
PM.add(createCodeGenPreparePass(getTargetLowering()));
if (PrintISelInput)
PM.add(new PrintFunctionPass("\n\n*** Final LLVM Code input to ISel *** \n",
&cerr));
// Ask the target for an isel.
if (addInstSelector(PM, Fast))
return true;