diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 0103e20..461d839 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -1637,6 +1637,10 @@
             PotentialDeadStoreSlots.push_back(ReuseSlot);
           }
 
+          // Assumes this is the last use. IsKill will be unset if reg is reused
+          // unless it's a two-address operand.
+          if (ti == -1)
+            MI.getOperand(i).setIsKill();
           continue;
         }  // CanReuse
         
diff --git a/test/CodeGen/ARM/2009-02-27-SpillerBug.ll b/test/CodeGen/ARM/2009-02-27-SpillerBug.ll
new file mode 100644
index 0000000..56e949f
--- /dev/null
+++ b/test/CodeGen/ARM/2009-02-27-SpillerBug.ll
@@ -0,0 +1,229 @@
+; RUN: llvm-as < %s | llc -march=arm -mattr=+v6,+vfp2
+
+target triple = "arm-apple-darwin9"
+@a = external global double		; <double*> [#uses=1]
+@N = external global double		; <double*> [#uses=1]
+
+declare double @llvm.exp.f64(double) nounwind readonly
+
+define fastcc void @findratio(double* nocapture %res1, double* nocapture %res2) nounwind {
+bb.thread:
+	br label %bb52
+
+bb32:		; preds = %bb52
+	%0 = add double 0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%1 = add i32 %j.1, 1		; <i32> [#uses=1]
+	br label %bb52
+
+bb52:		; preds = %bb53, %bb32, %bb.thread
+	%i.3494 = phi i32 [ 0, %bb.thread ], [ %3, %bb53 ], [ %i.3494, %bb32 ]		; <i32> [#uses=2]
+	%k.4 = phi double [ %0, %bb32 ], [ 0.000000e+00, %bb53 ], [ 0.000000e+00, %bb.thread ]		; <double> [#uses=2]
+	%j.1 = phi i32 [ %1, %bb32 ], [ 0, %bb53 ], [ 0, %bb.thread ]		; <i32> [#uses=2]
+	%2 = icmp sgt i32 %j.1, 99		; <i1> [#uses=1]
+	br i1 %2, label %bb53, label %bb32
+
+bb53:		; preds = %bb52
+	%3 = add i32 %i.3494, 1		; <i32> [#uses=2]
+	%phitmp = icmp sgt i32 %3, 999999		; <i1> [#uses=1]
+	br i1 %phitmp, label %bb55, label %bb52
+
+bb55:		; preds = %bb53
+	%4 = load double* @a, align 4		; <double> [#uses=10]
+	%5 = add double %4, 0.000000e+00		; <double> [#uses=16]
+	%6 = fcmp ogt double %k.4, 0.000000e+00		; <i1> [#uses=1]
+	%.pn404 = mul double %4, %4		; <double> [#uses=4]
+	%.pn402 = mul double %5, %5		; <double> [#uses=5]
+	%.pn165.in = load double* @N		; <double> [#uses=5]
+	%.pn198 = mul double 0.000000e+00, %5		; <double> [#uses=1]
+	%.pn185 = sub double -0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%.pn147 = sub double -0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%.pn141 = fdiv double 0.000000e+00, %4		; <double> [#uses=1]
+	%.pn142 = fdiv double 0.000000e+00, %5		; <double> [#uses=1]
+	%.pn136 = fdiv double 0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%.pn132 = fdiv double 0.000000e+00, %5		; <double> [#uses=1]
+	%.pn123 = fdiv double 0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%.pn124 = fdiv double 0.000000e+00, %.pn198		; <double> [#uses=1]
+	%.pn120 = fdiv double 0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%.pn117 = fdiv double 0.000000e+00, %4		; <double> [#uses=1]
+	%.pn118 = fdiv double %.pn185, %5		; <double> [#uses=1]
+	%.pn88 = fdiv double %.pn147, %5		; <double> [#uses=1]
+	%.pn81 = sub double %.pn141, %.pn142		; <double> [#uses=1]
+	%.pn77 = sub double 0.000000e+00, %.pn136		; <double> [#uses=1]
+	%.pn75 = sub double 0.000000e+00, %.pn132		; <double> [#uses=1]
+	%.pn69 = sub double %.pn123, %.pn124		; <double> [#uses=1]
+	%.pn67 = sub double 0.000000e+00, %.pn120		; <double> [#uses=1]
+	%.pn56 = sub double %.pn117, %.pn118		; <double> [#uses=1]
+	%.pn42 = sub double 0.000000e+00, %.pn88		; <double> [#uses=1]
+	%.pn60 = mul double %.pn81, 0.000000e+00		; <double> [#uses=1]
+	%.pn57 = add double %.pn77, 0.000000e+00		; <double> [#uses=1]
+	%.pn58 = mul double %.pn75, %.pn165.in		; <double> [#uses=1]
+	%.pn32 = add double %.pn69, 0.000000e+00		; <double> [#uses=1]
+	%.pn33 = mul double %.pn67, %.pn165.in		; <double> [#uses=1]
+	%.pn17 = sub double 0.000000e+00, %.pn60		; <double> [#uses=1]
+	%.pn9 = add double %.pn57, %.pn58		; <double> [#uses=1]
+	%.pn30 = mul double 0.000000e+00, %.pn56		; <double> [#uses=1]
+	%.pn24 = mul double 0.000000e+00, %.pn42		; <double> [#uses=1]
+	%.pn1 = add double %.pn32, %.pn33		; <double> [#uses=1]
+	%.pn28 = sub double %.pn30, 0.000000e+00		; <double> [#uses=1]
+	%.pn26 = add double %.pn28, 0.000000e+00		; <double> [#uses=1]
+	%.pn22 = sub double %.pn26, 0.000000e+00		; <double> [#uses=1]
+	%.pn20 = sub double %.pn24, 0.000000e+00		; <double> [#uses=1]
+	%.pn18 = add double %.pn22, 0.000000e+00		; <double> [#uses=1]
+	%.pn16 = add double %.pn20, 0.000000e+00		; <double> [#uses=1]
+	%.pn14 = sub double %.pn18, 0.000000e+00		; <double> [#uses=1]
+	%.pn12 = sub double %.pn16, %.pn17		; <double> [#uses=1]
+	%.pn10 = add double %.pn14, 0.000000e+00		; <double> [#uses=1]
+	%.pn8 = add double %.pn12, 0.000000e+00		; <double> [#uses=1]
+	%.pn6 = sub double %.pn10, 0.000000e+00		; <double> [#uses=1]
+	%.pn4 = sub double %.pn8, %.pn9		; <double> [#uses=1]
+	%.pn2 = add double %.pn6, 0.000000e+00		; <double> [#uses=1]
+	%.pn = add double %.pn4, 0.000000e+00		; <double> [#uses=1]
+	%N1.0 = sub double %.pn2, 0.000000e+00		; <double> [#uses=2]
+	%D1.0 = sub double %.pn, %.pn1		; <double> [#uses=2]
+	br i1 %6, label %bb62, label %bb64
+
+bb62:		; preds = %bb55
+	%7 = mul double 0.000000e+00, %4		; <double> [#uses=1]
+	%8 = sub double -0.000000e+00, %7		; <double> [#uses=3]
+	%9 = mul double 0.000000e+00, %5		; <double> [#uses=1]
+	%10 = sub double -0.000000e+00, %9		; <double> [#uses=3]
+	%11 = mul double %.pn404, %4		; <double> [#uses=5]
+	%12 = mul double %.pn402, %5		; <double> [#uses=5]
+	%13 = mul double 0.000000e+00, -2.000000e+00		; <double> [#uses=1]
+	%14 = fdiv double 0.000000e+00, %.pn402		; <double> [#uses=1]
+	%15 = sub double 0.000000e+00, %14		; <double> [#uses=1]
+	%16 = mul double 0.000000e+00, %15		; <double> [#uses=1]
+	%17 = add double %13, %16		; <double> [#uses=1]
+	%18 = mul double %.pn165.in, -2.000000e+00		; <double> [#uses=5]
+	%19 = mul double %18, 0.000000e+00		; <double> [#uses=1]
+	%20 = add double %17, %19		; <double> [#uses=1]
+	%21 = mul double 0.000000e+00, %20		; <double> [#uses=1]
+	%22 = add double 0.000000e+00, %21		; <double> [#uses=1]
+	%23 = fdiv double 0.000000e+00, %12		; <double> [#uses=1]
+	%24 = sub double 0.000000e+00, %23		; <double> [#uses=0]
+	%25 = mul double %18, 0.000000e+00		; <double> [#uses=1]
+	%26 = add double 0.000000e+00, %25		; <double> [#uses=1]
+	%27 = mul double 0.000000e+00, %26		; <double> [#uses=1]
+	%28 = sub double %22, %27		; <double> [#uses=1]
+	%29 = mul double %11, %4		; <double> [#uses=1]
+	%30 = mul double %12, %5		; <double> [#uses=3]
+	%31 = mul double %.pn165.in, -4.000000e+00		; <double> [#uses=1]
+	%32 = mul double %.pn165.in, 0x3FF5555555555555		; <double> [#uses=1]
+	%33 = mul double %32, 0.000000e+00		; <double> [#uses=2]
+	%34 = add double %28, 0.000000e+00		; <double> [#uses=1]
+	%35 = sub double -0.000000e+00, 0.000000e+00		; <double> [#uses=1]
+	%36 = fdiv double %35, %11		; <double> [#uses=1]
+	%37 = fdiv double 0.000000e+00, %12		; <double> [#uses=1]
+	%38 = sub double %36, %37		; <double> [#uses=1]
+	%39 = mul double 0.000000e+00, %38		; <double> [#uses=1]
+	%40 = add double 0.000000e+00, %39		; <double> [#uses=1]
+	%41 = add double %40, 0.000000e+00		; <double> [#uses=1]
+	%42 = add double %41, 0.000000e+00		; <double> [#uses=1]
+	%43 = mul double %42, 0.000000e+00		; <double> [#uses=1]
+	%44 = sub double %34, %43		; <double> [#uses=1]
+	%45 = tail call double @llvm.exp.f64(double %8) nounwind		; <double> [#uses=1]
+	%46 = sub double -0.000000e+00, %45		; <double> [#uses=2]
+	%47 = fdiv double %46, 0.000000e+00		; <double> [#uses=1]
+	%48 = mul double %30, %5		; <double> [#uses=1]
+	%49 = fdiv double 0.000000e+00, %48		; <double> [#uses=1]
+	%50 = sub double %47, %49		; <double> [#uses=1]
+	%51 = mul double %50, -4.000000e+00		; <double> [#uses=1]
+	%52 = add double %51, 0.000000e+00		; <double> [#uses=1]
+	%53 = fdiv double %46, %11		; <double> [#uses=1]
+	%54 = sub double %53, 0.000000e+00		; <double> [#uses=1]
+	%55 = mul double %31, %54		; <double> [#uses=1]
+	%56 = add double %52, %55		; <double> [#uses=1]
+	%57 = add double %56, 0.000000e+00		; <double> [#uses=1]
+	%58 = add double %44, %57		; <double> [#uses=1]
+	%59 = sub double %58, 0.000000e+00		; <double> [#uses=1]
+	%60 = tail call double @llvm.exp.f64(double 0.000000e+00) nounwind		; <double> [#uses=1]
+	%61 = sub double -0.000000e+00, %60		; <double> [#uses=1]
+	%62 = fdiv double 0.000000e+00, -6.000000e+00		; <double> [#uses=1]
+	%63 = fdiv double %61, %5		; <double> [#uses=1]
+	%64 = sub double 0.000000e+00, %63		; <double> [#uses=1]
+	%65 = mul double %62, %64		; <double> [#uses=1]
+	%66 = sub double 0.000000e+00, %65		; <double> [#uses=1]
+	%67 = sub double -0.000000e+00, 0.000000e+00		; <double> [#uses=2]
+	%68 = tail call double @llvm.exp.f64(double %10) nounwind		; <double> [#uses=1]
+	%69 = sub double -0.000000e+00, %68		; <double> [#uses=2]
+	%70 = fdiv double %67, %.pn404		; <double> [#uses=1]
+	%71 = fdiv double %69, %.pn402		; <double> [#uses=1]
+	%72 = sub double %70, %71		; <double> [#uses=1]
+	%73 = mul double %72, -5.000000e-01		; <double> [#uses=1]
+	%74 = fdiv double %67, %4		; <double> [#uses=1]
+	%75 = fdiv double %69, %5		; <double> [#uses=1]
+	%76 = sub double %74, %75		; <double> [#uses=1]
+	%77 = mul double %76, 0.000000e+00		; <double> [#uses=1]
+	%78 = add double %73, %77		; <double> [#uses=1]
+	%79 = mul double 0.000000e+00, %78		; <double> [#uses=1]
+	%80 = add double %66, %79		; <double> [#uses=1]
+	%81 = fdiv double 0.000000e+00, %.pn404		; <double> [#uses=1]
+	%82 = fdiv double 0.000000e+00, %.pn402		; <double> [#uses=1]
+	%83 = sub double %81, %82		; <double> [#uses=1]
+	%84 = mul double %83, -5.000000e-01		; <double> [#uses=1]
+	%85 = fdiv double 0.000000e+00, %4		; <double> [#uses=1]
+	%86 = fdiv double 0.000000e+00, %5		; <double> [#uses=1]
+	%87 = sub double %85, %86		; <double> [#uses=1]
+	%88 = mul double %87, 0.000000e+00		; <double> [#uses=1]
+	%89 = add double %84, %88		; <double> [#uses=1]
+	%90 = mul double 0.000000e+00, %89		; <double> [#uses=1]
+	%91 = sub double %80, %90		; <double> [#uses=1]
+	%92 = tail call double @llvm.exp.f64(double %8) nounwind		; <double> [#uses=1]
+	%93 = sub double -0.000000e+00, %92		; <double> [#uses=1]
+	%94 = tail call double @llvm.exp.f64(double %10) nounwind		; <double> [#uses=1]
+	%95 = sub double -0.000000e+00, %94		; <double> [#uses=3]
+	%96 = fdiv double %95, %.pn402		; <double> [#uses=1]
+	%97 = sub double 0.000000e+00, %96		; <double> [#uses=1]
+	%98 = mul double 0.000000e+00, %97		; <double> [#uses=1]
+	%99 = fdiv double %93, %11		; <double> [#uses=1]
+	%100 = fdiv double %95, %12		; <double> [#uses=1]
+	%101 = sub double %99, %100		; <double> [#uses=1]
+	%102 = sub double %98, %101		; <double> [#uses=1]
+	%103 = fdiv double %95, %5		; <double> [#uses=1]
+	%104 = sub double 0.000000e+00, %103		; <double> [#uses=1]
+	%105 = mul double %18, %104		; <double> [#uses=1]
+	%106 = add double %102, %105		; <double> [#uses=1]
+	%107 = mul double %106, %k.4		; <double> [#uses=1]
+	%108 = add double %91, %107		; <double> [#uses=1]
+	%109 = sub double %108, 0.000000e+00		; <double> [#uses=1]
+	%110 = tail call double @llvm.exp.f64(double %8) nounwind		; <double> [#uses=1]
+	%111 = sub double -0.000000e+00, %110		; <double> [#uses=2]
+	%112 = tail call double @llvm.exp.f64(double %10) nounwind		; <double> [#uses=1]
+	%113 = sub double -0.000000e+00, %112		; <double> [#uses=2]
+	%114 = fdiv double %111, %11		; <double> [#uses=1]
+	%115 = fdiv double %113, %12		; <double> [#uses=1]
+	%116 = sub double %114, %115		; <double> [#uses=1]
+	%117 = mul double 0.000000e+00, %116		; <double> [#uses=1]
+	%118 = fdiv double %111, %29		; <double> [#uses=1]
+	%119 = fdiv double %113, %30		; <double> [#uses=1]
+	%120 = sub double %118, %119		; <double> [#uses=1]
+	%121 = sub double %117, %120		; <double> [#uses=1]
+	%122 = mul double %18, 0.000000e+00		; <double> [#uses=1]
+	%123 = add double %121, %122		; <double> [#uses=1]
+	%124 = mul double %33, 0.000000e+00		; <double> [#uses=1]
+	%125 = add double %123, %124		; <double> [#uses=1]
+	%126 = add double %109, %125		; <double> [#uses=1]
+	%127 = tail call double @llvm.exp.f64(double 0.000000e+00) nounwind		; <double> [#uses=1]
+	%128 = sub double -0.000000e+00, %127		; <double> [#uses=2]
+	%129 = fdiv double %128, %30		; <double> [#uses=1]
+	%130 = sub double 0.000000e+00, %129		; <double> [#uses=1]
+	%131 = sub double 0.000000e+00, %130		; <double> [#uses=1]
+	%132 = fdiv double 0.000000e+00, %.pn404		; <double> [#uses=1]
+	%133 = sub double %132, 0.000000e+00		; <double> [#uses=1]
+	%134 = mul double %18, %133		; <double> [#uses=1]
+	%135 = add double %131, %134		; <double> [#uses=1]
+	%136 = fdiv double %128, %5		; <double> [#uses=1]
+	%137 = sub double 0.000000e+00, %136		; <double> [#uses=1]
+	%138 = mul double %33, %137		; <double> [#uses=1]
+	%139 = add double %135, %138		; <double> [#uses=1]
+	%140 = sub double %126, %139		; <double> [#uses=1]
+	%141 = add double %N1.0, %59		; <double> [#uses=1]
+	%142 = add double %D1.0, %140		; <double> [#uses=1]
+	br label %bb64
+
+bb64:		; preds = %bb62, %bb55
+	%N1.0.pn = phi double [ %141, %bb62 ], [ %N1.0, %bb55 ]		; <double> [#uses=1]
+	%D1.0.pn = phi double [ %142, %bb62 ], [ %D1.0, %bb55 ]		; <double> [#uses=1]
+	%x.1 = fdiv double %N1.0.pn, %D1.0.pn		; <double> [#uses=0]
+	ret void
+}