[llvm-tblgen] Avoid StringMatcher for GCC and MS builtin names

This brings the compile time of Function.cpp from ~40s down to ~4s for
me locally. It also shaves off about 400KB of object file size in a
release+asserts build.

I also realized that the AMDGPU backend does not have any GCC builtin
names to match, so the extra lookup was a no-op. I removed it to silence
a zero-length string table array warning. There should be no functional
change here.

This change really ends the story of PR11951.

llvm-svn: 258897

1 files changed, 1 insertions, 6 deletions

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUIntrinsicInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPUIntrinsicInfo.cpp
index b92dd35a8e8..791872a9db4 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUIntrinsicInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUIntrinsicInfo.cpp
@@ -20,10 +20,6 @@
 
 using namespace llvm;
 
-#define GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
-#include "AMDGPUGenIntrinsics.inc"
-#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
-
 AMDGPUIntrinsicInfo::AMDGPUIntrinsicInfo()
     : TargetIntrinsicInfo() {}
 
@@ -62,8 +58,7 @@ unsigned AMDGPUIntrinsicInfo::lookupName(const char *NameData,
                : 0;
   }
 
-  // Fall back on GCC builtin names.
-  return getIntrinsicForGCCBuiltin("AMDGPU", NameData);
+  return 0;
 }
 
 bool AMDGPUIntrinsicInfo::isOverloaded(unsigned id) const {