New OptimizationRemarkEmitter pass for MIR

This allows MIR passes to emit optimization remarks with the same level
of functionality that is available to IR passes.

It also hooks up the greedy register allocator to report spills.  This
allows for interesting use cases like increasing interleaving on a loop
until spilling of registers is observed.

I still need to experiment whether reporting every spill scales but this
demonstrates for now that the functionality works from llc
using -pass-remarks*=<pass>.

Differential Revision: https://reviews.llvm.org/D29004

llvm-svn: 293110

1 files changed, 7 insertions, 8 deletions

diff --git a/llvm/lib/IR/DiagnosticInfo.cpp b/llvm/lib/IR/DiagnosticInfo.cpp
index a13e3f73456..f9815eb45d4 100644
--- a/llvm/lib/IR/DiagnosticInfo.cpp
+++ b/llvm/lib/IR/DiagnosticInfo.cpp
@@ -222,9 +222,9 @@ OptimizationRemark::OptimizationRemark(const char *PassName,
                                    RemarkName, *Inst->getParent()->getParent(),
                                    Inst->getDebugLoc(), Inst->getParent()) {}
 
-bool OptimizationRemark::isEnabled() const {
+bool OptimizationRemark::isEnabled(StringRef PassName) {
   return PassRemarksOptLoc.Pattern &&
-         PassRemarksOptLoc.Pattern->match(getPassName());
+         PassRemarksOptLoc.Pattern->match(PassName);
 }
 
 OptimizationRemarkMissed::OptimizationRemarkMissed(const char *PassName,
@@ -243,9 +243,9 @@ OptimizationRemarkMissed::OptimizationRemarkMissed(const char *PassName,
                                    *Inst->getParent()->getParent(),
                                    Inst->getDebugLoc(), Inst->getParent()) {}
 
-bool OptimizationRemarkMissed::isEnabled() const {
+bool OptimizationRemarkMissed::isEnabled(StringRef PassName) {
   return PassRemarksMissedOptLoc.Pattern &&
-         PassRemarksMissedOptLoc.Pattern->match(getPassName());
+         PassRemarksMissedOptLoc.Pattern->match(PassName);
 }
 
 OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(const char *PassName,
@@ -273,10 +273,9 @@ OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(enum DiagnosticKind Kind,
                                    *cast<BasicBlock>(CodeRegion)->getParent(),
                                    DLoc, CodeRegion) {}
 
-bool OptimizationRemarkAnalysis::isEnabled() const {
-  return shouldAlwaysPrint() ||
-         (PassRemarksAnalysisOptLoc.Pattern &&
-          PassRemarksAnalysisOptLoc.Pattern->match(getPassName()));
+bool OptimizationRemarkAnalysis::isEnabled(StringRef PassName) {
+  return PassRemarksAnalysisOptLoc.Pattern &&
+         PassRemarksAnalysisOptLoc.Pattern->match(PassName);
 }
 
 void DiagnosticInfoMIRParser::print(DiagnosticPrinter &DP) const {