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      1 # RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
      2 # This test ensures that an error is reported when an unknown named machine
      3 # basic block is encountered.
      4 
      5 --- |
      6 
      7   define i32 @foo(i32* %p) {
      8   entry:
      9     %a = load i32, i32* %p
     10     %0 = icmp sle i32 %a, 10
     11     br i1 %0, label %less, label %exit
     12 
     13   less:
     14     ret i32 0
     15 
     16   exit:
     17     ret i32 %a
     18   }
     19 
     20 ...
     21 ---
     22 name:            foo
     23 body: |
     24   bb.0.entry:
     25     %eax = MOV32rm %rdi, 1, _, 0, _
     26     CMP32ri8 %eax, 10, implicit-def %eflags
     27     ; CHECK: [[@LINE+1]]:10: the name of machine basic block #2 isn't 'hit'
     28     JG_1 %bb.2.hit, implicit %eflags
     29 
     30   bb.1.less:
     31     %eax = MOV32r0 implicit-def %eflags
     32 
     33   bb.2.exit:
     34     RETQ %eax
     35 ...
     36