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      1 ; RUN: llc -O2 < %s | FileCheck %s
      2 
      3 @G = common global i32 0, align 4
      4 
      5 define i32 @foo(i8* %p) nounwind uwtable {
      6 entry:
      7   %p.addr = alloca i8*, align 8
      8   %rv = alloca i32, align 4
      9   store i8* %p, i8** %p.addr, align 8
     10   store i32 0, i32* @G, align 4
     11   %0 = load i8** %p.addr, align 8
     12 ; CHECK: blah
     13   %1 = call i32 asm "blah", "=r,r,~{memory}"(i8* %0) nounwind
     14 ; CHECK: @G
     15   store i32 %1, i32* %rv, align 4
     16   %2 = load i32* %rv, align 4
     17   %3 = load i32* @G, align 4
     18   %add = add nsw i32 %2, %3
     19   ret i32 %add
     20 }
     21 
     22