[llvm-commits] [llvm] r142194 - /llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp

[Hal Finkel]

Author: hfinkel
Date: Mon Oct 17 12:01:41 2011
New Revision: 142194

URL: http://llvm.org/viewvc/llvm-project?rev=142194&view=rev
Log:
Instructions for Book E PPC should be word aligned, set function alignment to reflect this

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp

Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=142194&r1=142193&r2=142194&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Mon Oct 17 12:01:41 2011
@@ -402,9 +402,16 @@
     setLibcallName(RTLIB::EXP2_PPCF128, "exp2l$LDBL128");
   }
 
-  setMinFunctionAlignment(2);
-  if (PPCSubTarget.isDarwin())
-    setPrefFunctionAlignment(4);
+  if (PPCSubTarget.isBookE()) {
+    // Book E: Instructions are always four bytes long and word-aligned.
+    setMinFunctionAlignment(4);
+    setPrefFunctionAlignment(8);
+  }
+  else {
+    setMinFunctionAlignment(2);
+    if (PPCSubTarget.isDarwin())
+      setPrefFunctionAlignment(4);
+  }
 
   setInsertFencesForAtomic(true);