[llvm] r180119 - Call the potentially costly isAnnotatedParallel() only once.

[Pekka Jaaskelainen]

Author: pjaaskel
Date: Tue Apr 23 11:44:43 2013
New Revision: 180119

URL: http://llvm.org/viewvc/llvm-project?rev=180119&view=rev
Log:
Call the potentially costly isAnnotatedParallel() only once. 
Made the uniform write test's checks a bit stricter.


Modified:
    llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
    llvm/trunk/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll

Modified: llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp?rev=180119&r1=180118&r2=180119&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp (original)
+++ llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp Tue Apr 23 11:44:43 2013
@@ -2556,6 +2556,8 @@ bool LoopVectorizationLegality::canVecto
   PtrRtCheck.Pointers.clear();
   PtrRtCheck.Need = false;
 
+  const bool IsAnnotatedParallel = TheLoop->isAnnotatedParallel();
+
   // For each block.
   for (Loop::block_iterator bb = TheLoop->block_begin(),
        be = TheLoop->block_end(); bb != be; ++bb) {
@@ -2570,7 +2572,7 @@ bool LoopVectorizationLegality::canVecto
       if (it->mayReadFromMemory()) {
         LoadInst *Ld = dyn_cast<LoadInst>(it);
         if (!Ld) return false;
-        if (!Ld->isSimple() && !TheLoop->isAnnotatedParallel()) {
+        if (!Ld->isSimple() && !IsAnnotatedParallel) {
           DEBUG(dbgs() << "LV: Found a non-simple load.\n");
           return false;
         }
@@ -2582,7 +2584,7 @@ bool LoopVectorizationLegality::canVecto
       if (it->mayWriteToMemory()) {
         StoreInst *St = dyn_cast<StoreInst>(it);
         if (!St) return false;
-        if (!St->isSimple() && !TheLoop->isAnnotatedParallel()) {
+        if (!St->isSimple() && !IsAnnotatedParallel) {
           DEBUG(dbgs() << "LV: Found a non-simple store.\n");
           return false;
         }
@@ -2629,7 +2631,7 @@ bool LoopVectorizationLegality::canVecto
       ReadWrites.insert(std::make_pair(Ptr, ST));
   }
 
-  if (TheLoop->isAnnotatedParallel()) {
+  if (IsAnnotatedParallel) {
     DEBUG(dbgs()
           << "LV: A loop annotated parallel, ignore memory dependency "
           << "checks.\n");

Modified: llvm/trunk/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll?rev=180119&r1=180118&r2=180119&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll (original)
+++ llvm/trunk/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll Tue Apr 23 11:44:43 2013
@@ -4,7 +4,8 @@ target datalayout = "e-p:64:64:64-i1:8:8
 target triple = "x86_64-unknown-linux-gnu"
 
 ;CHECK: @foo
-;CHECK-NOT: <4 x 
+;CHECK-NOT: <4 x i32>
+;CHECK: ret void
 
 ; Function Attrs: nounwind uwtable 
 define void @foo(i32* nocapture %a, i32* nocapture %b, i32 %k, i32 %m) #0 {