[llvm-commits] [llvm] r153851 - in /llvm/trunk: lib/Target/PowerPC/PPCISelLowering.cpp lib/Target/PowerPC/PPCInstrInfo.td test/CodeGen/PowerPC/ppc64-prefetch.ll

[Hal Finkel]

Author: hfinkel
Date: Sun Apr  1 15:08:17 2012
New Revision: 153851

URL: http://llvm.org/viewvc/llvm-project?rev=153851&view=rev
Log:
Enable prefetch generation on PPC64.

Added:
    llvm/trunk/test/CodeGen/PowerPC/ppc64-prefetch.ll
Modified:
    llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
    llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td

Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=153851&r1=153850&r2=153851&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Sun Apr  1 15:08:17 2012
@@ -389,6 +389,9 @@
     setOperationAction(ISD::BUILD_VECTOR, MVT::v4f32, Custom);
   }
 
+  if (TM.getSubtarget<PPCSubtarget>().has64BitSupport())
+    setOperationAction(ISD::PREFETCH, MVT::Other, Legal);
+
   setOperationAction(ISD::ATOMIC_LOAD,  MVT::i32, Expand);
   setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand);
 

Modified: llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td?rev=153851&r1=153850&r2=153851&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td Sun Apr  1 15:08:17 2012
@@ -545,6 +545,9 @@
                       "dcbzl $dst", LdStDCBF, [(int_ppc_dcbzl xoaddr:$dst)]>,
                       PPC970_DGroup_Single;
 
+def : Pat<(prefetch xoaddr:$dst, (i32 0), imm, (i32 1)),
+          (DCBT xoaddr:$dst)>;
+
 // Atomic operations
 let usesCustomInserter = 1 in {
   let Defs = [CR0] in {

Added: llvm/trunk/test/CodeGen/PowerPC/ppc64-prefetch.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/ppc64-prefetch.ll?rev=153851&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/ppc64-prefetch.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/ppc64-prefetch.ll Sun Apr  1 15:08:17 2012
@@ -0,0 +1,15 @@
+target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+; RUN: llc < %s | FileCheck %s
+
+define void @test1(i8* %a, ...) nounwind {
+entry:
+  call void @llvm.prefetch(i8* %a, i32 0, i32 3, i32 1)
+  ret void
+}
+
+declare void @llvm.prefetch(i8*, i32, i32, i32)
+
+; CHECK: @test1
+; CHECK: dcbt
+