// to see if ScaleReg is actually X+C. If so, we can turn this into adding
// X*Scale + C*Scale to addr mode.
ConstantInt *CI; Value *AddLHS;
- if (match(ScaleReg, m_Add(m_Value(AddLHS), m_ConstantInt(CI)))) {
+ if (isa<Instruction>(ScaleReg) && // not a constant expr.
+ match(ScaleReg, m_Add(m_Value(AddLHS), m_ConstantInt(CI)))) {
TestAddrMode.ScaledReg = AddLHS;
TestAddrMode.BaseOffs += CI->getSExtValue()*TestAddrMode.Scale;
--- /dev/null
+; RUN: llvm-as < %s | llc
+; rdar://6505632
+; reduced from 483.xalancbmk
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i386-apple-darwin7"
+ %"struct.std::basic_ostream<char,std::char_traits<char> >.base" = type { i32 (...)** }
+ %"struct.xercesc_2_5::ASCIIRangeFactory" = type { %"struct.std::basic_ostream<char,std::char_traits<char> >.base", i8, i8 }
+@_ZN11xercesc_2_5L17gIdeographicCharsE = external constant [7 x i16] ; <[7 x i16]*> [#uses=3]
+
+define void @_ZN11xercesc_2_515XMLRangeFactory11buildRangesEv(%"struct.xercesc_2_5::ASCIIRangeFactory"* %this) {
+entry:
+ br i1 false, label %bb5, label %return
+
+bb5: ; preds = %entry
+ br label %bb4.i.i
+
+bb4.i.i: ; preds = %bb4.i.i, %bb5
+ br i1 false, label %bb.i51, label %bb4.i.i
+
+bb.i51: ; preds = %bb.i51, %bb4.i.i
+ br i1 false, label %bb4.i.i70, label %bb.i51
+
+bb4.i.i70: ; preds = %bb4.i.i70, %bb.i51
+ br i1 false, label %_ZN11xercesc_2_59XMLString9stringLenEPKt.exit.i73, label %bb4.i.i70
+
+_ZN11xercesc_2_59XMLString9stringLenEPKt.exit.i73: ; preds = %bb4.i.i70
+ %0 = load i16* getelementptr ([7 x i16]* @_ZN11xercesc_2_5L17gIdeographicCharsE, i32 0, i32 add (i32 ashr (i32 sub (i32 ptrtoint (i16* getelementptr ([7 x i16]* @_ZN11xercesc_2_5L17gIdeographicCharsE, i32 0, i32 4) to i32), i32 ptrtoint ([7 x i16]* @_ZN11xercesc_2_5L17gIdeographicCharsE to i32)), i32 1), i32 1)), align 4 ; <i16> [#uses=0]
+ br label %bb4.i5.i141
+
+bb4.i5.i141: ; preds = %bb4.i5.i141, %_ZN11xercesc_2_59XMLString9stringLenEPKt.exit.i73
+ br label %bb4.i5.i141
+
+return: ; preds = %entry
+ ret void
+}