[llvm] r261578 - [LoopDataPrefetch] Make it testable with opt

[Adam Nemet via llvm-commits]

Author: anemet
Date: Mon Feb 22 15:41:22 2016
New Revision: 261578

URL: http://llvm.org/viewvc/llvm-project?rev=261578&view=rev
Log:
[LoopDataPrefetch] Make it testable with opt

Summary:
Since this is an IR pass it's nice to be able to write tests without
llc.  This is the counterpart of the llc test under
CodeGen/PowerPC/loop-data-prefetch.ll.

Reviewers: hfinkel

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D17464

Added:
    llvm/trunk/test/Transforms/LoopDataPrefetch/
    llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/
    llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/basic.ll
    llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/lit.local.cfg
Modified:
    llvm/trunk/include/llvm/InitializePasses.h
    llvm/trunk/lib/Transforms/Scalar/Scalar.cpp

Modified: llvm/trunk/include/llvm/InitializePasses.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/InitializePasses.h?rev=261578&r1=261577&r2=261578&view=diff
==============================================================================
--- llvm/trunk/include/llvm/InitializePasses.h (original)
+++ llvm/trunk/include/llvm/InitializePasses.h Mon Feb 22 15:41:22 2016
@@ -163,6 +163,7 @@ void initializeLiveStacksPass(PassRegist
 void initializeLiveVariablesPass(PassRegistry&);
 void initializeLoaderPassPass(PassRegistry&);
 void initializeLocalStackSlotPassPass(PassRegistry&);
+void initializeLoopDataPrefetchPass(PassRegistry&);
 void initializeLoopPassPass(PassRegistry&);
 void initializeLoopDeletionPass(PassRegistry&);
 void initializeLoopExtractorPass(PassRegistry&);

Modified: llvm/trunk/lib/Transforms/Scalar/Scalar.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/Scalar.cpp?rev=261578&r1=261577&r2=261578&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/Scalar.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/Scalar.cpp Mon Feb 22 15:41:22 2016
@@ -47,6 +47,7 @@ void llvm::initializeScalarOpts(PassRegi
   initializeIndVarSimplifyPass(Registry);
   initializeJumpThreadingPass(Registry);
   initializeLICMPass(Registry);
+  initializeLoopDataPrefetchPass(Registry);
   initializeLoopDeletionPass(Registry);
   initializeLoopAccessAnalysisPass(Registry);
   initializeLoopInstSimplifyPass(Registry);

Added: llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/basic.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/basic.ll?rev=261578&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/basic.ll (added)
+++ llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/basic.ll Mon Feb 22 15:41:22 2016
@@ -0,0 +1,25 @@
+; RUN: opt -mcpu=a2 -loop-data-prefetch -S < %s | FileCheck %s
+target datalayout = "E-m:e-i64:64-n32:64"
+target triple = "powerpc64-bgq-linux"
+
+define void @foo(double* nocapture %a, double* nocapture readonly %b) {
+entry:
+  br label %for.body
+
+; CHECK: for.body:
+for.body:                                         ; preds = %for.body, %entry
+  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+  %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv
+; CHECK: call void @llvm.prefetch
+  %0 = load double, double* %arrayidx, align 8
+  %add = fadd double %0, 1.000000e+00
+  %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv
+  store double %add, double* %arrayidx2, align 8
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+  %exitcond = icmp eq i64 %indvars.iv.next, 1600
+  br i1 %exitcond, label %for.end, label %for.body
+
+; CHECK: for.end:
+for.end:                                          ; preds = %for.body
+  ret void
+}

Added: llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/lit.local.cfg
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/lit.local.cfg?rev=261578&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/lit.local.cfg (added)
+++ llvm/trunk/test/Transforms/LoopDataPrefetch/PowerPC/lit.local.cfg Mon Feb 22 15:41:22 2016
@@ -0,0 +1,2 @@
+if not 'PowerPC' in config.root.targets:
+    config.unsupported = True