RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-03 01:12:53 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add options to view the dags before the first or second pass of dag combine.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33249 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-16 04:55:25 +00:00
parent e47b029ac0
commit 938ab02256
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
View File

@ -46,6 +46,20 @@ STATISTIC(PreIndexedNodes , "Number of pre-indexed nodes created");
STATISTIC(PostIndexedNodes, "Number of post-indexed nodes created");
namespace {
#ifndef NDEBUG
static cl::opt<bool>
ViewDAGCombine1("view-dag-combine1-dags", cl::Hidden,
cl::desc("Pop up a window to show dags before the first "
"dag combine pass"));
static cl::opt<bool>
ViewDAGCombine2("view-dag-combine2-dags", cl::Hidden,
cl::desc("Pop up a window to show dags before the second "
"dag combine pass"));
#else
static const bool ViewDAGCombine1 = false;
static const bool ViewDAGCombine2 = false;
#endif
static cl::opt<bool>
CombinerAA("combiner-alias-analysis", cl::Hidden,
cl::desc("Turn on alias analysis during testing"));
@ -4512,6 +4526,10 @@ SDOperand DAGCombiner::FindBetterChain(SDNode *N, SDOperand OldChain) {
// SelectionDAG::Combine - This is the entry point for the file.
//
void SelectionDAG::Combine(bool RunningAfterLegalize, AliasAnalysis &AA) {
if (!RunningAfterLegalize && ViewDAGCombine1)
viewGraph();
if (RunningAfterLegalize && ViewDAGCombine2)
viewGraph();
/// run - This is the main entry point to this class.
///
DAGCombiner(*this, AA).Run(RunningAfterLegalize);