Index: lib/Target/Mips/MipsFastISel.cpp
===================================================================
--- lib/Target/Mips/MipsFastISel.cpp
+++ lib/Target/Mips/MipsFastISel.cpp
@@ -186,6 +186,7 @@
     UnsupportedFPMode = Subtarget->isFP64bit();
   }
 
+  unsigned fastMaterializeAlloca(const AllocaInst *AI) override;
   unsigned fastMaterializeConstant(const Constant *C) override;
   bool fastSelectInstruction(const Instruction *I) override;
 
@@ -252,6 +253,29 @@
   return ResultReg;
 }
 
+unsigned MipsFastISel::fastMaterializeAlloca(const AllocaInst *AI) {
+  assert(TLI.getValueType(AI->getType(), true) == MVT::i32 &&
+         "Alloca should always return a pointer.");
+
+  // Don't handle dynamic allocas.
+  if (!FuncInfo.StaticAllocaMap.count(AI))
+    return 0;
+
+  DenseMap<const AllocaInst *, int>::iterator SI =
+      FuncInfo.StaticAllocaMap.find(AI);
+
+  if (SI != FuncInfo.StaticAllocaMap.end()) {
+    unsigned ResultReg = createResultReg(&Mips::GPR32RegClass);
+    BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Mips::LEA_ADDiu),
+            ResultReg)
+        .addFrameIndex(SI->second)
+        .addImm(0);
+    return ResultReg;
+  }
+
+  return 0;
+}
+
 unsigned MipsFastISel::materializeInt(const Constant *C, MVT VT) {
   if (VT != MVT::i32 && VT != MVT::i16 && VT != MVT::i8 && VT != MVT::i1)
     return 0;
Index: test/CodeGen/Mips/Fast-ISel/fastalloca.ll
===================================================================
--- /dev/null
+++ test/CodeGen/Mips/Fast-ISel/fastalloca.ll
@@ -0,0 +1,57 @@
+; RUN: llc -march=mipsel -relocation-model=pic -O0 -mips-fast-isel -fast-isel-abort=1 -mcpu=mips32r2 \
+; RUN:     < %s | FileCheck %s
+
+; ModuleID = 'fooa.c'
+target datalayout = "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64"
+target triple = "mipsel--linux-gnu"
+
+%struct.x = type { i32 }
+
+@i = common global i32 0, align 4
+
+; Function Attrs: nounwind
+define i32 @foobar(i32 signext %x) #0 {
+entry:
+; CHECK-LABEL: foobar:
+  %retval = alloca i32, align 4
+  %x.addr = alloca i32, align 4
+  %a = alloca %struct.x, align 4
+  %c = alloca %struct.x*, align 4
+  store i32 %x, i32* %x.addr, align 4
+  %x1 = getelementptr inbounds %struct.x, %struct.x* %a, i32 0, i32 0
+  %0 = load i32, i32* %x.addr, align 4
+  store i32 %0, i32* %x1, align 4
+  store %struct.x* %a, %struct.x** %c, align 4
+  %1 = load %struct.x*, %struct.x** %c, align 4
+  %x2 = getelementptr inbounds %struct.x, %struct.x* %1, i32 0, i32 0
+  %2 = load i32, i32* %x2, align 4
+  store i32 %2, i32* @i, align 4
+  %3 = load i32, i32* %retval
+; CHECK-DAG: 	lw	$[[I_ADDR:[0-9]+]], %got(i)($[[REG_GP:[0-9]+]])
+; CHECK-DAG:	addiu	$[[A_ADDR:[0-9]+]], $fp, 8
+; CHECK-DAG:    sw      $[[A_ADDR]], [[A_ADDR_FI:[0-9]+]]($fp)
+; CHECK-DAG:    lw      $[[A_ADDR2:[0-9]+]], [[A_ADDR_FI]]($fp)
+; CHECK-DAG:    lw      $[[A_X:[0-9]+]], 0($[[A_ADDR2]])
+; CHECK-DAG:    sw      $[[A_X]], 0($[[I_ADDR]]) 
+  ret i32 %3
+}
+
+; Function Attrs: nounwind
+define i32 @main() #0 {
+entry:
+; CHECK-LABEL: main:
+  %retval = alloca i32, align 4
+  store i32 0, i32* %retval
+  %call = call i32 @foobar(i32 signext 99)
+  %0 = load i32, i32* @i, align 4
+  %sub = sub nsw i32 99, %0
+  ret i32 %sub
+}
+
+attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"PIC Level", i32 2}
+!1 = !{!"clang version 3.6.0 (gitosis@dmz-portal.mips.com:clang.git f96fd4c68e89695cc64686bcf0dc768aee4638e5) (gitosis@dmz-portal.mips.com:llvm.git 33df92e7a51bb034540e4de79d2d4cff83439d7b)"}