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Allow the selection-dag based selector to be diabled with -disable-pattern-isel. 

For now, this is the default, as the current selector is missing some big pieces.
To enable the new selector, pass -disable-pattern-isel=false to llc or lli.

llvm-svn: 19335
This commit is contained in:
Chris Lattner 2005-01-07 07:50:50 +00:00
parent 88c8a23891
commit ca4ca5520b
1 changed files with 11 additions and 2 deletions
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13
llvm/lib/Target/X86/X86TargetMachine.cpp
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@ -41,6 +41,9 @@ namespace {
cl::opt<bool> DisableOutput("disable-x86-llc-output", cl::Hidden,
cl::desc("Disable the X86 asm printer, for use "
"when profiling the code generator."));
cl::opt<bool> DisablePatternISel("disable-pattern-isel", cl::Hidden,
cl::desc("Disable the pattern isel XXX FIXME"),
cl::init(true));
#if 0
// FIXME: This should eventually be handled with target triples and
@ -110,7 +113,10 @@ bool X86TargetMachine::addPassesToEmitAssembly(PassManager &PM,
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
PM.add(createX86SimpleInstructionSelector(*this));
if (DisablePatternISel)
PM.add(createX86SimpleInstructionSelector(*this));
else
PM.add(createX86PatternInstructionSelector(*this));
// Run optional SSA-based machine code optimizations next...
if (!NoSSAPeephole)
@ -165,7 +171,10 @@ void X86JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
PM.add(createX86SimpleInstructionSelector(TM));
if (DisablePatternISel)
PM.add(createX86SimpleInstructionSelector(TM));
else
PM.add(createX86PatternInstructionSelector(TM));
// Run optional SSA-based machine code optimizations next...
if (!NoSSAPeephole)