Add support for missed and analysis optimization remarks.

Summary:
This adds two new diagnostics: -pass-remarks-missed and
-pass-remarks-analysis. They take the same values as -pass-remarks but
are intended to be triggered in different contexts.

-pass-remarks-missed is used by LLVMContext::emitOptimizationRemarkMissed,
which passes call when they tried to apply a transformation but
couldn't.

-pass-remarks-analysis is used by LLVMContext::emitOptimizationRemarkAnalysis,
which passes call when they want to inform the user about analysis
results.

The patch also:

1- Adds support in the inliner for the two new remarks and a
   test case.

2- Moves emitOptimizationRemark* functions to the llvm namespace.

3- Adds an LLVMContext argument instead of making them member functions
   of LLVMContext.

Reviewers: qcolombet

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D3682

llvm-svn: 209442

2 files changed, 9 insertions, 7 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopUnroll.cpp b/llvm/lib/Transforms/Utils/LoopUnroll.cpp
index faaab5c12e4..d953e307310 100644
--- a/llvm/lib/Transforms/Utils/LoopUnroll.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnroll.cpp
@@ -24,6 +24,7 @@
 #include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Dominators.h"
+#include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
@@ -237,9 +238,9 @@ bool llvm::UnrollLoop(Loop *L, unsigned Count, unsigned TripCount,
   if (CompletelyUnroll) {
     DEBUG(dbgs() << "COMPLETELY UNROLLING loop %" << Header->getName()
           << " with trip count " << TripCount << "!\n");
-    Ctx.emitOptimizationRemark(DEBUG_TYPE, *F, LoopLoc,
-                               Twine("completely unrolled loop with ") +
-                                   Twine(TripCount) + " iterations");
+    emitOptimizationRemark(Ctx, DEBUG_TYPE, *F, LoopLoc,
+                           Twine("completely unrolled loop with ") +
+                               Twine(TripCount) + " iterations");
   } else {
     DEBUG(dbgs() << "UNROLLING loop %" << Header->getName()
           << " by " << Count);
@@ -255,7 +256,7 @@ bool llvm::UnrollLoop(Loop *L, unsigned Count, unsigned TripCount,
       DiagMsg.concat(" with run-time trip count");
     }
     DEBUG(dbgs() << "!\n");
-    Ctx.emitOptimizationRemark(DEBUG_TYPE, *F, LoopLoc, DiagMsg);
+    emitOptimizationRemark(Ctx, DEBUG_TYPE, *F, LoopLoc, DiagMsg);
   }
 
   bool ContinueOnTrue = L->contains(BI->getSuccessor(0));
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 0fd185816fd..3b61bb575a8 100644
--- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -20,6 +20,7 @@
 #include "llvm/ADT/Triple.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/IntrinsicInst.h"
@@ -789,9 +790,9 @@ struct StrLenOpt : public LibCallOptimization {
       uint64_t LenTrue = GetStringLength(SI->getTrueValue());
       uint64_t LenFalse = GetStringLength(SI->getFalseValue());
       if (LenTrue && LenFalse) {
-        Context->emitOptimizationRemark(
-            "simplify-libcalls", *Caller, SI->getDebugLoc(),
-            "folded strlen(select) to select of constants");
+        emitOptimizationRemark(*Context, "simplify-libcalls", *Caller,
+                               SI->getDebugLoc(),
+                               "folded strlen(select) to select of constants");
         return B.CreateSelect(SI->getCondition(),
                               ConstantInt::get(CI->getType(), LenTrue-1),
                               ConstantInt::get(CI->getType(), LenFalse-1));