Fall back to selection DAG isel for calls to builtin functions.

Fast isel doesn't currently have support for translating builtin function
calls to target instructions.  For embedded environments where the library
functions are not available, this is a matter of correctness and not
just optimization.  Most of this patch is just arranging to make the
TargetLibraryInfo available in fast isel.  <rdar://problem/12008746>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161232 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 7ad48b9b53..213af20ebd 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -361,7 +361,8 @@ namespace llvm {
 
     /// createFastISel - This method returns a target specific FastISel object,
     /// or null if the target does not support "fast" ISel.
-    virtual FastISel *createFastISel(FunctionLoweringInfo &funcInfo) const;
+    virtual FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
+                                     const TargetLibraryInfo *libInfo) const;
 
     Sched::Preference getSchedulingPreference(SDNode *N) const;
 
@@ -544,7 +545,8 @@ namespace llvm {
 
 
   namespace ARM {
-    FastISel *createFastISel(FunctionLoweringInfo &funcInfo);
+    FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
+                             const TargetLibraryInfo *libInfo);
   }
 }