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      1 ; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s
      2 
      3 %umul.ty = type { i32, i1 }
      4 
      5 define i32 @func(i32 %a) nounwind {
      6 ; CHECK: func
      7 ; CHECK: muldi3
      8   %tmp0 = tail call %umul.ty @llvm.umul.with.overflow.i32(i32 %a, i32 37)
      9   %tmp1 = extractvalue %umul.ty %tmp0, 0
     10   %tmp2 = select i1 undef, i32 -1, i32 %tmp1
     11   ret i32 %tmp2
     12 }
     13 
     14 declare %umul.ty @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone
     15 
     16 define i32 @f(i32 %argc, i8** %argv) ssp {
     17 ; CHECK: func
     18 ; CHECK: str     r0
     19 ; CHECK: movs    r2
     20 ; CHECK: mov     r1
     21 ; CHECK: mov     r3
     22 ; CHECK: muldi3
     23 %1 = alloca i32, align 4
     24 %2 = alloca i32, align 4
     25 %3 = alloca i8**, align 4
     26 %m_degree = alloca i32, align 4
     27 store i32 0, i32* %1
     28 store i32 %argc, i32* %2, align 4
     29 store i8** %argv, i8*** %3, align 4
     30 store i32 10, i32* %m_degree, align 4
     31 %4 = load i32* %m_degree, align 4
     32 %5 = call %umul.ty @llvm.umul.with.overflow.i32(i32 %4, i32 8)
     33 %6 = extractvalue %umul.ty %5, 1
     34 %7 = extractvalue %umul.ty %5, 0
     35 %8 = select i1 %6, i32 -1, i32 %7
     36 %9 = call noalias i8* @_Znam(i32 %8)
     37 %10 = bitcast i8* %9 to double*
     38 ret i32 0
     39 }
     40 
     41 declare noalias i8* @_Znam(i32)
     42