[GlobalISel] Don't fall back to FastISel.

Apparently checking the pass structure isn't enough to ensure that we don't fall
back to FastISel, as it's set up as part of the SelectionDAGISel.

llvm-svn: 323369

2 files changed, 5 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index c3d782802eb..73bae2fbf38 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1380,8 +1380,10 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
   FastISelFailed = false;
   // Initialize the Fast-ISel state, if needed.
   FastISel *FastIS = nullptr;
-  if (TM.Options.EnableFastISel)
+  if (TM.Options.EnableFastISel) {
+    DEBUG(dbgs() << "Enabling fast-isel\n");
     FastIS = TLI->createFastISel(*FuncInfo, LibInfo);
+  }
 
   setupSwiftErrorVals(Fn, TLI, FuncInfo);
 
diff --git a/llvm/lib/CodeGen/TargetPassConfig.cpp b/llvm/lib/CodeGen/TargetPassConfig.cpp
index 4a10c249c3c..374bb7a38fe 100644
--- a/llvm/lib/CodeGen/TargetPassConfig.cpp
+++ b/llvm/lib/CodeGen/TargetPassConfig.cpp
@@ -708,6 +708,8 @@ bool TargetPassConfig::addCoreISelPasses() {
   if (EnableGlobalISelOption == cl::BOU_TRUE ||
       (EnableGlobalISelOption == cl::BOU_UNSET &&
        TM->Options.EnableGlobalISel && EnableFastISelOption != cl::BOU_TRUE)) {
+    TM->setFastISel(false);
+
     if (addIRTranslator())
       return true;