[llvm] r210067 - [AArch64] Correctly deal with VPR stack parameter passing.

[Jiangning Liu]

Author: jiangning
Date: Mon Jun  2 22:25:09 2014
New Revision: 210067

URL: http://llvm.org/viewvc/llvm-project?rev=210067&view=rev
Log:
[AArch64] Correctly deal with VPR stack parameter passing.

Modified:
    llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
    llvm/trunk/test/CodeGen/AArch64/arm64-aapcs.ll

Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp?rev=210067&r1=210066&r2=210067&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp Mon Jun  2 22:25:09 2014
@@ -1711,7 +1711,9 @@ SDValue AArch64TargetLowering::LowerForm
       InVals.push_back(FrameIdxN);
 
       continue;
-    } if (VA.isRegLoc()) {
+    }
+    
+    if (VA.isRegLoc()) {
       // Arguments stored in registers.
       EVT RegVT = VA.getLocVT();
 
@@ -1772,25 +1774,30 @@ SDValue AArch64TargetLowering::LowerForm
       SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
       SDValue ArgValue;
 
+      // For NON_EXTLOAD, generic code in getLoad assert(ValVT == MemVT)
       ISD::LoadExtType ExtType = ISD::NON_EXTLOAD;
+      MVT MemVT = VA.getValVT();
+
       switch (VA.getLocInfo()) {
       default:
         break;
       case CCValAssign::SExt:
         ExtType = ISD::SEXTLOAD;
+        MemVT = VA.getLocVT();
         break;
       case CCValAssign::ZExt:
         ExtType = ISD::ZEXTLOAD;
+        MemVT = VA.getLocVT();
         break;
       case CCValAssign::AExt:
         ExtType = ISD::EXTLOAD;
+        MemVT = VA.getLocVT();
         break;
       }
 
       ArgValue = DAG.getExtLoad(ExtType, DL, VA.getValVT(), Chain, FIN,
                                 MachinePointerInfo::getFixedStack(FI),
-                                VA.getLocVT(),
-                                false, false, false, 0);
+                                MemVT, false, false, false, 0);
 
       InVals.push_back(ArgValue);
     }

Modified: llvm/trunk/test/CodeGen/AArch64/arm64-aapcs.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/arm64-aapcs.ll?rev=210067&r1=210066&r2=210067&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/arm64-aapcs.ll (original)
+++ llvm/trunk/test/CodeGen/AArch64/arm64-aapcs.ll Mon Jun  2 22:25:09 2014
@@ -101,3 +101,11 @@ define fp128 @test_fp128([8 x float] %ar
 ; CHECK: ldr {{q[0-9]+}}, [sp]
   ret fp128 %arg1
 }
+
+; Check if VPR can be correctly pass by stack.
+define <2 x double> @test_vreg_stack([8 x <2 x double>], <2 x double> %varg_stack) {
+entry:
+; CHECK-LABEL: test_vreg_stack:
+; CHECK: ldr {{q[0-9]+}}, [sp]
+  ret <2 x double> %varg_stack;
+}