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      1 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
      2 ; CHECK: testb %al, %al
      3 
      4 %struct.__va_list_tag = type { i32, i32, i8*, i8* }
      5 
      6 define void @foo(i32 %x, ...) nounwind {
      7 entry:
      8   %ap = alloca [1 x %struct.__va_list_tag], align 8; <[1 x %struct.__va_list_tag]*> [#uses=2]
      9   %ap12 = bitcast [1 x %struct.__va_list_tag]* %ap to i8*; <i8*> [#uses=2]
     10   call void @llvm.va_start(i8* %ap12)
     11   %ap3 = getelementptr inbounds [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0; <%struct.__va_list_tag*> [#uses=1]
     12   call void @bar(%struct.__va_list_tag* %ap3) nounwind
     13   call void @llvm.va_end(i8* %ap12)
     14   ret void
     15 }
     16 
     17 declare void @llvm.va_start(i8*) nounwind
     18 
     19 declare void @bar(%struct.__va_list_tag*)
     20 
     21 declare void @llvm.va_end(i8*) nounwind
     22