Re: [llvm-branch-commits] llvm-branch-commits Digest, Vol 69, Issue 3

[Tom Stellard]

-----------------------------------------------------------------

Message: 1
Date: Mon, 01 Dec 2014 11:22:34 -0000
From: Daniel Sanders <daniel.sand...@imgtec.com>
To: llvm-branch-commits@cs.uiuc.edu
Subject: [llvm-branch-commits] [llvm-branch] r223007 - Merged from
        r214493:
Message-ID: <20141201112234.d8b3d2a6c...@llvm.org>
Content-Type: text/plain; charset="utf-8"

Author: dsanders
Date: Mon Dec  1 05:22:34 2014
New Revision: 223007

URL: http://llvm.org/viewvc/llvm-project?rev=223007&view=rev
Log:
Merged from r214493:

[mips][PR19612] Fix va_arg for big-endian mode.

Summary:
Big-endian mode was not correctly adjusting the offset for types smaller
than an ABI slot.

Fixes PR19612

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: sstankovic, llvm-commits

Differential Revision: http://reviews.llvm.org/D4556


Added:
     llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-varargs.ll
Modified:
     llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.cpp
     llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.h
     
llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-hard-float-varargs.ll

Modified: llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.cpp?rev=223007&r1=223006&r2=223007&view=diff
==============================================================================
--- llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.cpp (original)
+++ llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.cpp Mon Dec  1 
05:22:34 2014
@@ -251,7 +251,6 @@ MipsTargetLowering::MipsTargetLowering(M
    setOperationAction(ISD::SETCC,              MVT::f32,   Custom);
    setOperationAction(ISD::SETCC,              MVT::f64,   Custom);
    setOperationAction(ISD::BRCOND,             MVT::Other, Custom);
-  setOperationAction(ISD::VASTART,            MVT::Other, Custom);
    setOperationAction(ISD::FCOPYSIGN,          MVT::f32,   Custom);
    setOperationAction(ISD::FCOPYSIGN,          MVT::f64,   Custom);
    setOperationAction(ISD::FP_TO_SINT,         MVT::i32,   Custom);
@@ -343,7 +342,8 @@ MipsTargetLowering::MipsTargetLowering(M

    setOperationAction(ISD::EH_RETURN, MVT::Other, Custom);

-  setOperationAction(ISD::VAARG,             MVT::Other, Expand);
+  setOperationAction(ISD::VASTART,           MVT::Other, Custom);
+  setOperationAction(ISD::VAARG,             MVT::Other, Custom);
    setOperationAction(ISD::VACOPY,            MVT::Other, Expand);
    setOperationAction(ISD::VAEND,             MVT::Other, Expand);

@@ -392,6 +392,11 @@ MipsTargetLowering::MipsTargetLowering(M

    setMinFunctionAlignment(Subtarget.isGP64bit() ? 3 : 2);

+  // The arguments on the stack are defined in terms of 4-byte slots on O32
+  // and 8-byte slots on N32/N64.
+  setMinStackArgumentAlignment(
+      (Subtarget.isABI_N32() || Subtarget.isABI_N64()) ? 8 : 4);
+
    setStackPointerRegisterToSaveRestore(Subtarget.isABI_N64() ? Mips::SP_64
                                                               : Mips::SP);

@@ -792,6 +797,7 @@ LowerOperation(SDValue Op, SelectionDAG
    case ISD::SELECT_CC:          return lowerSELECT_CC(Op, DAG);
    case ISD::SETCC:              return lowerSETCC(Op, DAG);
    case ISD::VASTART:            return lowerVASTART(Op, DAG);
+  case ISD::VAARG:              return lowerVAARG(Op, DAG);
    case ISD::FCOPYSIGN:          return lowerFCOPYSIGN(Op, DAG);
    case ISD::FRAMEADDR:          return lowerFRAMEADDR(Op, DAG);
    case ISD::RETURNADDR:         return lowerRETURNADDR(Op, DAG);
@@ -1755,6 +1761,65 @@ SDValue MipsTargetLowering::lowerVASTART
                        MachinePointerInfo(SV), false, false, 0);
  }

+SDValue MipsTargetLowering::lowerVAARG(SDValue Op, SelectionDAG &DAG) const {
+  SDNode *Node = Op.getNode();
+  EVT VT = Node->getValueType(0);
+  SDValue Chain = Node->getOperand(0);
+  SDValue VAListPtr = Node->getOperand(1);
+  unsigned Align = Node->getConstantOperandVal(3);
+  const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
+  SDLoc DL(Node);
+  unsigned ArgSlotSizeInBytes =
+      (Subtarget.isABI_N32() || Subtarget.isABI_N64()) ? 8 : 4;
+
+  SDValue VAListLoad = DAG.getLoad(getPointerTy(), DL, Chain, VAListPtr,
+                                   MachinePointerInfo(SV), false, false, false,
+                                   0);
+  SDValue VAList = VAListLoad;
+
+  // Re-align the pointer if necessary.
+  // It should only ever be necessary for 64-bit types on O32 since the minimum
+  // argument alignment is the same as the maximum type alignment for N32/N64.
+  //
+  // FIXME: We currently align too often. The code generator doesn't notice
+  //        when the pointer is still aligned from the last va_arg (or pair of
+  //        va_args for the i64 on O32 case).
+  if (Align > getMinStackArgumentAlignment()) {
+    assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2");
+
+    VAList = DAG.getNode(ISD::ADD, DL, VAList.getValueType(), VAList,
+                         DAG.getConstant(Align - 1,
+                                         VAList.getValueType()));
+
+    VAList = DAG.getNode(ISD::AND, DL, VAList.getValueType(), VAList,
+                         DAG.getConstant(-(int64_t)Align,
+                                         VAList.getValueType()));
+  }
+
+  // Increment the pointer, VAList, to the next vaarg.
+  unsigned ArgSizeInBytes = 
getDataLayout()->getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext()));
+  SDValue Tmp3 = DAG.getNode(ISD::ADD, DL, VAList.getValueType(), VAList,
+                             
DAG.getConstant(RoundUpToAlignment(ArgSizeInBytes, ArgSlotSizeInBytes),
+                                             VAList.getValueType()));
+  // Store the incremented VAList to the legalized pointer
+  Chain = DAG.getStore(VAListLoad.getValue(1), DL, Tmp3, VAListPtr,
+                      MachinePointerInfo(SV), false, false, 0);
+
+  // In big-endian mode we must adjust the pointer when the load size is 
smaller
+  // than the argument slot size. We must also reduce the known alignment to
+  // match. For example in the N64 ABI, we must add 4 bytes to the offset to 
get
+  // the correct half of the slot, and reduce the alignment from 8 (slot
+  // alignment) down to 4 (type alignment).
+  if (!Subtarget.isLittle() && ArgSizeInBytes < ArgSlotSizeInBytes) {
+    unsigned Adjustment = ArgSlotSizeInBytes - ArgSizeInBytes;
+    VAList = DAG.getNode(ISD::ADD, DL, VAListPtr.getValueType(), VAList,
+                         DAG.getIntPtrConstant(Adjustment));
+  }
+  // Load the actual argument out of the pointer VAList
+  return DAG.getLoad(VT, DL, Chain, VAList, MachinePointerInfo(), false, false,
+                     false, 0);
+}
+
  static SDValue lowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG,
                                  bool HasExtractInsert) {
    EVT TyX = Op.getOperand(0).getValueType();

Modified: llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.h
URL: 
http://llvm.org/viewvc/llvm-project/llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.h?rev=223007&r1=223006&r2=223007&view=diff
==============================================================================
--- llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.h (original)
+++ llvm/branches/release_35/lib/Target/Mips/MipsISelLowering.h Mon Dec  1 
05:22:34 2014
@@ -482,6 +482,7 @@ namespace llvm {
      SDValue lowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
      SDValue lowerSETCC(SDValue Op, SelectionDAG &DAG) const;
      SDValue lowerVASTART(SDValue Op, SelectionDAG &DAG) const;
+    SDValue lowerVAARG(SDValue Op, SelectionDAG &DAG) const;

Could you make this function private to avoid adding a new symbol to
libLLVM-3.5.so

-Tom

      SDValue lowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const;
      SDValue lowerFABS(SDValue Op, SelectionDAG &DAG) const;
      SDValue lowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;

Modified: 
llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-hard-float-varargs.ll
URL: 
http://llvm.org/viewvc/llvm-project/llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-hard-float-varargs.ll?rev=223007&r1=223006&r2=223007&view=diff
==============================================================================
--- 
llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-hard-float-varargs.ll
 (original)
+++ 
llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-hard-float-varargs.ll
 Mon Dec  1 05:22:34 2014
@@ -4,11 +4,11 @@
  ; RUN-TODO: llc -march=mips64 -relocation-model=static -mattr=-n64,+o32 < %s 
| FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=O32 %s
  ; RUN-TODO: llc -march=mips64el -relocation-model=static -mattr=-n64,+o32 < 
%s | FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=O32 %s

-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=N32 
--check-prefix=NEW %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=N32 
--check-prefix=NEW %s
+; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=N32 
--check-prefix=NEW --check-prefix=NEWBE %s
+; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM32 --check-prefix=N32 
--check-prefix=NEW --check-prefix=NEWLE %s

-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM64 --check-prefix=N64 
--check-prefix=NEW %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM64 --check-prefix=N64 
--check-prefix=NEW %s
+; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM64 --check-prefix=N64 
--check-prefix=NEW --check-prefix=NEWBE %s
+; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=SYM64 --check-prefix=N64 
--check-prefix=NEW --check-prefix=NEWLE %s

  ; Test the effect of varargs on floating point types in the non-variable part
  ; of the argument list as specified by section 2 of the MIPSpro N32 Handbook.
@@ -34,6 +34,7 @@ entry:
          %b = va_arg i8** %ap, double
          %1 = getelementptr [11 x double]* @doubles, i32 0, i32 2
          store volatile double %b, double* %1
+        call void @llvm.va_end(i8* %ap2)
          ret void
  }

@@ -98,6 +99,7 @@ entry:
          %b = va_arg i8** %ap, float
          %1 = getelementptr [11 x float]* @floats, i32 0, i32 2
          store volatile float %b, float* %1
+        call void @llvm.va_end(i8* %ap2)
          ret void
  }

@@ -140,16 +142,18 @@ entry:
  ; Increment the pointer then get the varargs arg
  ; LLVM will rebind the load to the stack pointer instead of the varargs 
pointer
  ; during lowering. This is fine and doesn't change the behaviour.
-; N32/N64 is using ori instead of addiu/daddiu but (although odd) this is fine
-; since the stack is always aligned.
+; Also, in big-endian mode the offset must be increased by 4 to retrieve the
+; correct half of the argument slot.
+;
  ; O32-DAG:           addiu [[VAPTR]], [[VAPTR]], 4
  ; O32-DAG:           sw [[VAPTR]], 4($sp)
-; N32-DAG:           ori [[VAPTR]], [[VAPTR]], 4
+; N32-DAG:           addiu [[VAPTR]], [[VAPTR]], 8
  ; N32-DAG:           sw [[VAPTR]], 4($sp)
-; N64-DAG:           ori [[VAPTR]], [[VAPTR]], 4
+; N64-DAG:           daddiu [[VAPTR]], [[VAPTR]], 8
  ; N64-DAG:           sd [[VAPTR]], 0($sp)
  ; O32-DAG:           lwc1 [[FTMP1:\$f[0-9]+]], 12($sp)
-; NEW-DAG:           lwc1 [[FTMP1:\$f[0-9]+]], 8($sp)
+; NEWLE-DAG:         lwc1 [[FTMP1:\$f[0-9]+]], 8($sp)
+; NEWBE-DAG:         lwc1 [[FTMP1:\$f[0-9]+]], 12($sp)
  ; ALL-DAG:           swc1 [[FTMP1]], 8([[R2]])

  declare void @llvm.va_start(i8*)

Added: llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-varargs.ll
URL: 
http://llvm.org/viewvc/llvm-project/llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-varargs.ll?rev=223007&view=auto
==============================================================================
--- llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-varargs.ll 
(added)
+++ llvm/branches/release_35/test/CodeGen/Mips/cconv/arguments-varargs.ll Mon 
Dec  1 05:22:34 2014
@@ -0,0 +1,1104 @@
+; RUN: llc -march=mips -relocation-model=static < %s | FileCheck 
--check-prefix=ALL --check-prefix=O32 --check-prefix=O32-BE %s
+; RUN: llc -march=mipsel -relocation-model=static < %s | FileCheck 
--check-prefix=ALL --check-prefix=O32 --check-prefix=O32-LE %s
+
+; RUN-TODO: llc -march=mips64 -relocation-model=static -mattr=-n64,+o32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -march=mips64el -relocation-model=static -mattr=-n64,+o32 < %s 
| FileCheck --check-prefix=ALL --check-prefix=O32 %s
+
+; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=NEW --check-prefix=N32 
--check-prefix=NEW-BE %s
+; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n32 < %s | 
FileCheck --check-prefix=ALL --check-prefix=NEW --check-prefix=N32 
--check-prefix=NEW-LE %s
+
+; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=NEW --check-prefix=N64 
--check-prefix=NEW-BE %s
+; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n64 < %s | 
FileCheck --check-prefix=ALL --check-prefix=NEW --check-prefix=N64 
--check-prefix=NEW-LE %s
+
+@hwords = global [3 x i16] zeroinitializer, align 1
+@words  = global [3 x i32] zeroinitializer, align 1
+@dwords = global [3 x i64] zeroinitializer, align 1
+
+define void @fn_i16_dotdotdot_i16(i16 %a, ...) {
+entry:
+; ALL-LABEL: fn_i16_dotdotdot_i16:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(hwords)(
+
+; ALL-DAG:       sh [[ARG1]], 2([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sh [[ARG2]], 4([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i16
+  %e1 = getelementptr [3 x i16]* @hwords, i32 0, i32 1
+  store volatile i16 %arg1, i16* %e1, align 2
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i16
+  %e2 = getelementptr [3 x i16]* @hwords, i32 0, i32 2
+  store volatile i16 %arg2, i16* %e2, align 2
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i16_dotdotdot_i32(i16 %a, ...) {
+entry:
+; ALL-LABEL: fn_i16_dotdotdot_i32:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(words)(
+
+; ALL-DAG:       sw [[ARG1]], 4([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sw [[ARG2]], 8([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i32
+  %e1 = getelementptr [3 x i32]* @words, i32 0, i32 1
+  store volatile i32 %arg1, i32* %e1, align 4
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i32
+  %e2 = getelementptr [3 x i32]* @words, i32 0, i32 2
+  store volatile i32 %arg2, i32* %e2, align 4
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i16_dotdotdot_i64(i16 %a, ...) {
+entry:
+; ALL-LABEL: fn_i16_dotdotdot_i64:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]] (and realign pointer for O32)
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       addiu [[VA_TMP1:\$[0-9]+]], $zero, -8
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion and copy it to the global.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 8([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 12([[GV]])
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(dwords)(
+; NEW-DAG:       ld [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-DAG:       sd [[ARG1]], 8([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; FIXME: We're still aligned from the last one but CodeGen doesn't spot that.
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion and copy it to the global.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 16([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 20([[GV]])
+
+; NEW-DAG:       ld [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-DAG:       sd [[ARG2]], 16([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i64
+  %e1 = getelementptr [3 x i64]* @dwords, i32 0, i32 1
+  store volatile i64 %arg1, i64* %e1, align 8
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i64
+  %e2 = getelementptr [3 x i64]* @dwords, i32 0, i32 2
+  store volatile i64 %arg2, i64* %e2, align 8
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i32_dotdotdot_i16(i32 %a, ...) {
+entry:
+; ALL-LABEL: fn_i32_dotdotdot_i16:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(hwords)(
+
+; ALL-DAG:       sh [[ARG1]], 2([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sh [[ARG2]], 4([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i16
+  %e1 = getelementptr [3 x i16]* @hwords, i32 0, i32 1
+  store volatile i16 %arg1, i16* %e1, align 2
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i16
+  %e2 = getelementptr [3 x i16]* @hwords, i32 0, i32 2
+  store volatile i16 %arg2, i16* %e2, align 2
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i32_dotdotdot_i32(i32 %a, ...) {
+entry:
+; ALL-LABEL: fn_i32_dotdotdot_i32:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(words)(
+
+; ALL-DAG:       sw [[ARG1]], 4([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sw [[ARG2]], 8([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i32
+  %e1 = getelementptr [3 x i32]* @words, i32 0, i32 1
+  store volatile i32 %arg1, i32* %e1, align 4
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i32
+  %e2 = getelementptr [3 x i32]* @words, i32 0, i32 2
+  store volatile i32 %arg2, i32* %e2, align 4
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i32_dotdotdot_i64(i32 %a, ...) {
+entry:
+; ALL-LABEL: fn_i32_dotdotdot_i64:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+; O32-DAG:       sw $5, 12([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 12 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the 4 byte slot for the 
first
+; fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 12
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]] (and realign pointer for O32)
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       addiu [[VA_TMP1:\$[0-9]+]], $zero, -8
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion and copy it to the global.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 8([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 12([[GV]])
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(dwords)(
+; NEW-DAG:       ld [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-DAG:       sd [[ARG1]], 8([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; FIXME: We're still aligned from the last one but CodeGen doesn't spot that.
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion and copy it to the global.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 16([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 20([[GV]])
+
+; NEW-DAG:       ld [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-DAG:       sd [[ARG2]], 16([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i64
+  %e1 = getelementptr [3 x i64]* @dwords, i32 0, i32 1
+  store volatile i64 %arg1, i64* %e1, align 8
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i64
+  %e2 = getelementptr [3 x i64]* @dwords, i32 0, i32 2
+  store volatile i64 %arg2, i64* %e2, align 8
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i64_dotdotdot_i16(i64 %a, ...) {
+entry:
+; ALL-LABEL: fn_i64_dotdotdot_i16:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 16 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the two 4 byte slots for the
+; first fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 16
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(hwords)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(hwords)(
+
+; ALL-DAG:       sh [[ARG1]], 2([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sh [[ARG2]], 4([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i16
+  %e1 = getelementptr [3 x i16]* @hwords, i32 0, i32 1
+  store volatile i16 %arg1, i16* %e1, align 2
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i16
+  %e2 = getelementptr [3 x i16]* @hwords, i32 0, i32 2
+  store volatile i16 %arg2, i16* %e2, align 2
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i64_dotdotdot_i32(i64 %a, ...) {
+entry:
+; ALL-LABEL: fn_i64_dotdotdot_i32:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 16 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the two 4 byte slots for the
+; first fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 16
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]]
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-BE-DAG:    lw [[ARG1:\$[0-9]+]], 4([[VA]])
+
+; Copy the arg to the global
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(words)
+
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(words)(
+
+; ALL-DAG:       sw [[ARG1]], 4([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+
+; NEW-LE-DAG:    lw [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-BE-DAG:    lw [[ARG2:\$[0-9]+]], 4([[VA2]])
+
+; Copy the arg to the global
+; ALL-DAG:       sw [[ARG2]], 8([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i32
+  %e1 = getelementptr [3 x i32]* @words, i32 0, i32 1
+  store volatile i32 %arg1, i32* %e1, align 4
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i32
+  %e2 = getelementptr [3 x i32]* @words, i32 0, i32 2
+  store volatile i32 %arg2, i32* %e2, align 4
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+define void @fn_i64_dotdotdot_i64(i64 %a, ...) {
+entry:
+; ALL-LABEL: fn_i64_dotdotdot_i64:
+
+; Set up the stack with an 8-byte local area. N32/N64 must also make room for
+; the argument save area (56 bytes).
+; O32:           addiu  [[SP:\$sp]], $sp, -8
+; N32:           addiu  [[SP:\$sp]], $sp, -64
+; N64:           daddiu  [[SP:\$sp]], $sp, -64
+
+; Save variable argument portion on the stack
+; O32-DAG:       sw $7, 20([[SP]])
+; O32-DAG:       sw $6, 16([[SP]])
+
+; NEW-DAG:       sd $11, 56([[SP]])
+; NEW-DAG:       sd $10, 48([[SP]])
+; NEW-DAG:       sd $9, 40([[SP]])
+; NEW-DAG:       sd $8, 32([[SP]])
+; NEW-DAG:       sd $7, 24([[SP]])
+; NEW-DAG:       sd $6, 16([[SP]])
+; NEW-DAG:       sd $5, 8([[SP]])
+
+; Initialize variable argument pointer.
+; For O32, the offset is 16 due to the 4 bytes used to store local variables,
+; 4 bytes padding to maintain stack alignment, and the two 4 byte slots for the
+; first fixed argument.
+; For N32/N64, it is only 8 since the fixed arguments do not reserve stack
+; space.
+; O32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 16
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; N32-DAG:       addiu [[VA:\$[0-9]+]], [[SP]], 8
+; N32-DAG:       sw [[VA]], 0([[SP]])
+
+; N64-DAG:       daddiu [[VA:\$[0-9]+]], [[SP]], 8
+; N64-DAG:       sd [[VA]], 0([[SP]])
+
+; Store [[VA]]
+; O32-DAG:       sw [[VA]], 0([[SP]])
+
+; ALL: # ANCHOR1
+
+; Increment [[VA]] (and realign pointer for O32)
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       addiu [[VA_TMP1:\$[0-9]+]], $zero, -8
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N64-DAG:       ld [[VA:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 8
+; N64-DAG:       sd [[VA2]], 0([[SP]])
+
+; Load the first argument from the variable portion and copy it to the global.
+; This has used the stack pointer directly rather than the [[VA]] we just set
+; up.
+; Big-endian mode for N32/N64 must add an additional 4 to the offset due to 
byte
+; order.
+; O32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 8([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG1:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG1]], 12([[GV]])
+
+; N32-DAG:       addiu [[GV:\$[0-9]+]], ${{[0-9]+}}, %lo(dwords)
+; N64-DAG:       ld [[GV:\$[0-9]+]], %got_disp(dwords)(
+; NEW-DAG:       ld [[ARG1:\$[0-9]+]], 0([[VA]])
+; NEW-DAG:       sd [[ARG1]], 8([[GV]])
+
+; ALL: # ANCHOR2
+
+; Increment [[VA]] again.
+; FIXME: We're still aligned from the last one but CodeGen doesn't spot that.
+; O32:           lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA_TMP0:\$[0-9]+]], [[VA]], 7
+; O32-DAG:       and   [[VA_TMP2:\$[0-9]+]], [[VA_TMP0]], [[VA_TMP1]]
+; O32-DAG:       ori   [[VA2:\$[0-9]+]], [[VA_TMP2]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+
+; N32-DAG:       lw [[VA2:\$[0-9]+]], 0([[SP]])
+; N32-DAG:       addiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N32-DAG:       sw [[VA3]], 0([[SP]])
+
+; N64-DAG:       ld [[VA2:\$[0-9]+]], 0([[SP]])
+; N64-DAG:       daddiu [[VA3:\$[0-9]+]], [[VA2]], 8
+; N64-DAG:       sd [[VA3]], 0([[SP]])
+
+; Load the second argument from the variable portion and copy it to the global.
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 16([[GV]])
+; O32-DAG:       lw [[VA:\$[0-9]+]], 0([[SP]])
+; O32-DAG:       addiu [[VA2:\$[0-9]+]], [[VA]], 4
+; O32-DAG:       sw [[VA2]], 0([[SP]])
+; O32-DAG:       lw [[ARG2:\$[0-9]+]], 0([[VA]])
+; O32-DAG:       sw [[ARG2]], 20([[GV]])
+
+; NEW-DAG:       ld [[ARG2:\$[0-9]+]], 0([[VA2]])
+; NEW-DAG:       sd [[ARG2]], 16([[GV]])
+
+  %ap = alloca i8*, align 8
+  %ap2 = bitcast i8** %ap to i8*
+  call void @llvm.va_start(i8* %ap2)
+
+  call void asm sideeffect "# ANCHOR1", ""()
+  %arg1 = va_arg i8** %ap, i64
+  %e1 = getelementptr [3 x i64]* @dwords, i32 0, i32 1
+  store volatile i64 %arg1, i64* %e1, align 8
+
+  call void asm sideeffect "# ANCHOR2", ""()
+  %arg2 = va_arg i8** %ap, i64
+  %e2 = getelementptr [3 x i64]* @dwords, i32 0, i32 2
+  store volatile i64 %arg2, i64* %e2, align 8
+
+  call void @llvm.va_end(i8* %ap2)
+
+  ret void
+}
+
+declare void @llvm.va_start(i8*)
+declare void @llvm.va_end(i8*)




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