[PATCH] D29309: [PM] Add support for instrumented PGO in the new pass manager (clang-side)

[Davide Italiano via Phabricator via llvm-commits]

davide created this revision.

This implements the clang bits of https://reviews.llvm.org/D29308
I'm planning to use this to test the PGO inliner changes available only in the new pass manager.
I'm not very familiar with the clang driver so I'm not sure if this change is correct. PTAL (also suggestions on how to best test this are welcome).


https://reviews.llvm.org/D29309

Files:
  lib/CodeGen/BackendUtil.cpp


Index: lib/CodeGen/BackendUtil.cpp
===================================================================
--- lib/CodeGen/BackendUtil.cpp
+++ lib/CodeGen/BackendUtil.cpp
@@ -796,6 +796,17 @@
 
   ModulePassManager MPM;
 
+  // Setup PGO options.
+  if (CodeGenOpts.hasProfileIRInstr()) {
+    PB.RunProfileGen = true;
+    if (!CodeGenOpts.InstrProfileOutput.empty())
+      PB.ProfileGenFile = CodeGenOpts.InstrProfileOutput;
+    else
+      PB.ProfileGenFile = "default_%m.profraw";
+  }
+  if (CodeGenOpts.hasProfileIRUse())
+    PB.ProfileUseFile = CodeGenOpts.ProfileInstrumentUsePath;
+
   if (!CodeGenOpts.DisableLLVMPasses) {
     if (CodeGenOpts.OptimizationLevel == 0) {
       // Build a minimal pipeline based on the semantics required by Clang,


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